Add m-esr52 at 52.6.0

41 files changed, 7399 insertions, 0 deletions

diff --git a/testing/mozharness/external_tools/virtualenv/AUTHORS.txt b/testing/mozharness/external_tools/virtualenv/AUTHORS.txt
new file mode 100644
index 000000000..272494163
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/AUTHORS.txt
@@ -0,0 +1,91 @@
+Author
+------
+
+Ian Bicking
+
+Maintainers
+-----------
+
+Brian Rosner
+Carl Meyer
+Jannis Leidel
+Paul Moore
+Paul Nasrat
+Marcus Smith
+
+Contributors
+------------
+
+Alex Grönholm
+Anatoly Techtonik
+Antonio Cuni
+Antonio Valentino
+Armin Ronacher
+Barry Warsaw
+Benjamin Root
+Bradley Ayers
+Branden Rolston
+Brandon Carl
+Brian Kearns
+Cap Petschulat
+CBWhiz
+Chris Adams
+Chris McDonough
+Christos Kontas
+Christian Hudon
+Christian Stefanescu
+Christopher Nilsson
+Cliff Xuan
+Curt Micol
+Damien Nozay
+Dan Sully
+Daniel Hahler
+Daniel Holth
+David Schoonover
+Denis Costa
+Doug Hellmann
+Doug Napoleone
+Douglas Creager
+Eduard-Cristian Stefan
+Erik M. Bray
+Ethan Jucovy
+Gabriel de Perthuis
+Gunnlaugur Thor Briem
+Graham Dennis
+Greg Haskins
+Jason Penney
+Jason R. Coombs
+Jeff Hammel
+Jeremy Orem
+Jason Penney
+Jason R. Coombs
+John Kleint
+Jonathan Griffin
+Jonathan Hitchcock
+Jorge Vargas
+Josh Bronson
+Kamil Kisiel
+Kyle Gibson
+Konstantin Zemlyak
+Kumar McMillan
+Lars Francke
+Marc Abramowitz
+Mika Laitio
+Mike Hommey
+Miki Tebeka
+Philip Jenvey
+Philippe Ombredanne
+Piotr Dobrogost
+Preston Holmes
+Ralf Schmitt
+Raul Leal
+Ronny Pfannschmidt
+Satrajit Ghosh
+Sergio de Carvalho
+Stefano Rivera
+Tarek Ziadé
+Thomas Aglassinger
+Vinay Sajip
+Vitaly Babiy
+Vladimir Rutsky
+Wang Xuerui
\ No newline at end of file
diff --git a/testing/mozharness/external_tools/virtualenv/LICENSE.txt b/testing/mozharness/external_tools/virtualenv/LICENSE.txt
new file mode 100644
index 000000000..ab145001f
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/LICENSE.txt
@@ -0,0 +1,22 @@
+Copyright (c) 2007 Ian Bicking and Contributors
+Copyright (c) 2009 Ian Bicking, The Open Planning Project
+Copyright (c) 2011-2016 The virtualenv developers
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/testing/mozharness/external_tools/virtualenv/MANIFEST.in b/testing/mozharness/external_tools/virtualenv/MANIFEST.in
new file mode 100644
index 000000000..49037ada6
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/MANIFEST.in
@@ -0,0 +1,12 @@
+recursive-include docs *
+recursive-include tests *.py *.sh *.expected
+recursive-include virtualenv_support *.whl
+recursive-include virtualenv_embedded *
+recursive-exclude docs/_templates *
+recursive-exclude docs/_build *
+include virtualenv_support/__init__.py
+include bin/*
+include scripts/*
+include *.py
+include AUTHORS.txt
+include LICENSE.txt
diff --git a/testing/mozharness/external_tools/virtualenv/PKG-INFO b/testing/mozharness/external_tools/virtualenv/PKG-INFO
new file mode 100644
index 000000000..dbfda645d
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/PKG-INFO
@@ -0,0 +1,87 @@
+Metadata-Version: 1.1
+Name: virtualenv
+Version: 15.0.1
+Summary: Virtual Python Environment builder
+Home-page: https://virtualenv.pypa.io/
+Author: Jannis Leidel, Carl Meyer and Brian Rosner
+Author-email: python-virtualenv@groups.google.com
+License: MIT
+Description: Virtualenv
+        ==========
+        
+        `Mailing list <http://groups.google.com/group/python-virtualenv>`_ |
+        `Issues <https://github.com/pypa/virtualenv/issues>`_ |
+        `Github <https://github.com/pypa/virtualenv>`_ |
+        `PyPI <https://pypi.python.org/pypi/virtualenv/>`_ |
+        User IRC: #pypa
+        Dev IRC: #pypa-dev
+        
+        Introduction
+        ------------
+        
+        ``virtualenv`` is a tool to create isolated Python environments.
+        
+        The basic problem being addressed is one of dependencies and versions,
+        and indirectly permissions. Imagine you have an application that
+        needs version 1 of LibFoo, but another application requires version
+        2. How can you use both these applications?  If you install
+        everything into ``/usr/lib/python2.7/site-packages`` (or whatever your
+        platform's standard location is), it's easy to end up in a situation
+        where you unintentionally upgrade an application that shouldn't be
+        upgraded.
+        
+        Or more generally, what if you want to install an application *and
+        leave it be*?  If an application works, any change in its libraries or
+        the versions of those libraries can break the application.
+        
+        Also, what if you can't install packages into the global
+        ``site-packages`` directory?  For instance, on a shared host.
+        
+        In all these cases, ``virtualenv`` can help you. It creates an
+        environment that has its own installation directories, that doesn't
+        share libraries with other virtualenv environments (and optionally
+        doesn't access the globally installed libraries either).
+        
+        .. comment: 
+        
+        Release History
+        ===============
+        
+        15.0.1 (2016-03-17)
+        -------------------
+        
+        * Print error message when DEST_DIR exists and is a file
+        
+        * Upgrade setuptools to 20.3
+        
+        * Upgrade pip to 8.1.1.
+        
+        
+        15.0.0 (2016-03-05)
+        -------------------
+        
+        * Remove the `virtualenv-N.N` script from the package; this can no longer be
+          correctly created from a wheel installation.
+          Resolves #851, #692
+        
+        * Remove accidental runtime dependency on pip by extracting certificate in the
+          subprocess.
+        
+        * Upgrade setuptools 20.2.2.
+        
+        * Upgrade pip to 8.1.0.
+        
+        
+        `Full Changelog <https://virtualenv.pypa.io/en/latest/changes.html>`_.
+Keywords: setuptools deployment installation distutils
+Platform: UNKNOWN
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Intended Audience :: Developers
+Classifier: License :: OSI Approved :: MIT License
+Classifier: Programming Language :: Python :: 2
+Classifier: Programming Language :: Python :: 2.6
+Classifier: Programming Language :: Python :: 2.7
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.3
+Classifier: Programming Language :: Python :: 3.4
+Classifier: Programming Language :: Python :: 3.5
diff --git a/testing/mozharness/external_tools/virtualenv/README.rst b/testing/mozharness/external_tools/virtualenv/README.rst
new file mode 100644
index 000000000..0d5984dce
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/README.rst
@@ -0,0 +1,31 @@
+virtualenv
+==========
+
+A tool for creating isolated 'virtual' python environments.
+
+.. image:: https://img.shields.io/pypi/v/virtualenv.svg
+        :target: https://pypi.python.org/pypi/virtualenv
+
+.. image:: https://img.shields.io/travis/pypa/virtualenv/develop.svg
+   :target: http://travis-ci.org/pypa/virtualenv
+
+* `Installation <https://virtualenv.pypa.io/en/latest/installation.html>`_
+* `Documentation <https://virtualenv.pypa.io/>`_
+* `Changelog <https://virtualenv.pypa.io/en/latest/changes.html>`_
+* `Issues <https://github.com/pypa/virtualenv/issues>`_
+* `PyPI <https://pypi.python.org/pypi/virtualenv/>`_
+* `Github <https://github.com/pypa/virtualenv>`_
+* `User mailing list <http://groups.google.com/group/python-virtualenv>`_
+* `Dev mailing list <http://groups.google.com/group/pypa-dev>`_
+* User IRC: #pypa on Freenode.
+* Dev IRC: #pypa-dev on Freenode.
+
+
+Code of Conduct
+---------------
+
+Everyone interacting in the virtualenv project's codebases, issue trackers,
+chat rooms, and mailing lists is expected to follow the
+`PyPA Code of Conduct`_.
+
+.. _PyPA Code of Conduct: https://www.pypa.io/en/latest/code-of-conduct/
diff --git a/testing/mozharness/external_tools/virtualenv/bin/rebuild-script.py b/testing/mozharness/external_tools/virtualenv/bin/rebuild-script.py
new file mode 100755
index 000000000..a816af3eb
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/bin/rebuild-script.py
@@ -0,0 +1,73 @@
+#!/usr/bin/env python
+"""
+Helper script to rebuild virtualenv.py from virtualenv_support
+"""
+from __future__ import print_function
+
+import os
+import re
+import codecs
+from zlib import crc32
+
+here = os.path.dirname(__file__)
+script = os.path.join(here, '..', 'virtualenv.py')
+
+gzip = codecs.lookup('zlib')
+b64 = codecs.lookup('base64')
+
+file_regex = re.compile(
+    br'##file (.*?)\n([a-zA-Z][a-zA-Z0-9_]+)\s*=\s*convert\("""\n(.*?)"""\)',
+    re.S)
+file_template = b'##file %(filename)s\n%(varname)s = convert("""\n%(data)s""")'
+
+def rebuild(script_path):
+    with open(script_path, 'rb') as f:
+        script_content = f.read()
+    parts = []
+    last_pos = 0
+    match = None
+    for match in file_regex.finditer(script_content):
+        parts += [script_content[last_pos:match.start()]]
+        last_pos = match.end()
+        filename, fn_decoded = match.group(1), match.group(1).decode()
+        varname = match.group(2)
+        data = match.group(3)
+
+        print('Found file %s' % fn_decoded)
+        pathname = os.path.join(here, '..', 'virtualenv_embedded', fn_decoded)
+
+        with open(pathname, 'rb') as f:
+            embedded = f.read()
+        new_crc = crc32(embedded)
+        new_data = b64.encode(gzip.encode(embedded)[0])[0]
+
+        if new_data == data:
+            print('  File up to date (crc: %s)' % new_crc)
+            parts += [match.group(0)]
+            continue
+        # Else: content has changed
+        crc = crc32(gzip.decode(b64.decode(data)[0])[0])
+        print('  Content changed (crc: %s -> %s)' %
+              (crc, new_crc))
+        new_match = file_template % {
+            b'filename': filename,
+            b'varname': varname,
+            b'data': new_data
+        }
+        parts += [new_match]
+
+    parts += [script_content[last_pos:]]
+    new_content = b''.join(parts)
+
+    if new_content != script_content:
+        print('Content updated; overwriting... ', end='')
+        with open(script_path, 'wb') as f:
+            f.write(new_content)
+        print('done.')
+    else:
+        print('No changes in content')
+    if match is None:
+        print('No variables were matched/found')
+
+if __name__ == '__main__':
+    rebuild(script)
diff --git a/testing/mozharness/external_tools/virtualenv/docs/Makefile b/testing/mozharness/external_tools/virtualenv/docs/Makefile
new file mode 100644
index 000000000..e4de9f847
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/docs/Makefile
@@ -0,0 +1,130 @@
+# Makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line.
+SPHINXOPTS    =
+SPHINXBUILD   = sphinx-build
+PAPER         =
+BUILDDIR      = _build
+
+# Internal variables.
+PAPEROPT_a4     = -D latex_paper_size=a4
+PAPEROPT_letter = -D latex_paper_size=letter
+ALLSPHINXOPTS   = -d $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
+
+.PHONY: help clean html dirhtml singlehtml pickle json htmlhelp qthelp devhelp epub latex latexpdf text man changes linkcheck doctest
+
+help:
+	@echo "Please use \`make <target>' where <target> is one of"
+	@echo "  html       to make standalone HTML files"
+	@echo "  dirhtml    to make HTML files named index.html in directories"
+	@echo "  singlehtml to make a single large HTML file"
+	@echo "  pickle     to make pickle files"
+	@echo "  json       to make JSON files"
+	@echo "  htmlhelp   to make HTML files and a HTML help project"
+	@echo "  qthelp     to make HTML files and a qthelp project"
+	@echo "  devhelp    to make HTML files and a Devhelp project"
+	@echo "  epub       to make an epub"
+	@echo "  latex      to make LaTeX files, you can set PAPER=a4 or PAPER=letter"
+	@echo "  latexpdf   to make LaTeX files and run them through pdflatex"
+	@echo "  text       to make text files"
+	@echo "  man        to make manual pages"
+	@echo "  changes    to make an overview of all changed/added/deprecated items"
+	@echo "  linkcheck  to check all external links for integrity"
+	@echo "  doctest    to run all doctests embedded in the documentation (if enabled)"
+
+clean:
+	-rm -rf $(BUILDDIR)/*
+
+html:
+	$(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
+	@echo
+	@echo "Build finished. The HTML pages are in $(BUILDDIR)/html."
+
+dirhtml:
+	$(SPHINXBUILD) -b dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml
+	@echo
+	@echo "Build finished. The HTML pages are in $(BUILDDIR)/dirhtml."
+
+singlehtml:
+	$(SPHINXBUILD) -b singlehtml $(ALLSPHINXOPTS) $(BUILDDIR)/singlehtml
+	@echo
+	@echo "Build finished. The HTML page is in $(BUILDDIR)/singlehtml."
+
+pickle:
+	$(SPHINXBUILD) -b pickle $(ALLSPHINXOPTS) $(BUILDDIR)/pickle
+	@echo
+	@echo "Build finished; now you can process the pickle files."
+
+json:
+	$(SPHINXBUILD) -b json $(ALLSPHINXOPTS) $(BUILDDIR)/json
+	@echo
+	@echo "Build finished; now you can process the JSON files."
+
+htmlhelp:
+	$(SPHINXBUILD) -b htmlhelp $(ALLSPHINXOPTS) $(BUILDDIR)/htmlhelp
+	@echo
+	@echo "Build finished; now you can run HTML Help Workshop with the" \
+	      ".hhp project file in $(BUILDDIR)/htmlhelp."
+
+qthelp:
+	$(SPHINXBUILD) -b qthelp $(ALLSPHINXOPTS) $(BUILDDIR)/qthelp
+	@echo
+	@echo "Build finished; now you can run "qcollectiongenerator" with the" \
+	      ".qhcp project file in $(BUILDDIR)/qthelp, like this:"
+	@echo "# qcollectiongenerator $(BUILDDIR)/qthelp/django-compressor.qhcp"
+	@echo "To view the help file:"
+	@echo "# assistant -collectionFile $(BUILDDIR)/qthelp/django-compressor.qhc"
+
+devhelp:
+	$(SPHINXBUILD) -b devhelp $(ALLSPHINXOPTS) $(BUILDDIR)/devhelp
+	@echo
+	@echo "Build finished."
+	@echo "To view the help file:"
+	@echo "# mkdir -p $$HOME/.local/share/devhelp/django-compressor"
+	@echo "# ln -s $(BUILDDIR)/devhelp $$HOME/.local/share/devhelp/django-compressor"
+	@echo "# devhelp"
+
+epub:
+	$(SPHINXBUILD) -b epub $(ALLSPHINXOPTS) $(BUILDDIR)/epub
+	@echo
+	@echo "Build finished. The epub file is in $(BUILDDIR)/epub."
+
+latex:
+	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
+	@echo
+	@echo "Build finished; the LaTeX files are in $(BUILDDIR)/latex."
+	@echo "Run \`make' in that directory to run these through (pdf)latex" \
+	      "(use \`make latexpdf' here to do that automatically)."
+
+latexpdf:
+	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
+	@echo "Running LaTeX files through pdflatex..."
+	make -C $(BUILDDIR)/latex all-pdf
+	@echo "pdflatex finished; the PDF files are in $(BUILDDIR)/latex."
+
+text:
+	$(SPHINXBUILD) -b text $(ALLSPHINXOPTS) $(BUILDDIR)/text
+	@echo
+	@echo "Build finished. The text files are in $(BUILDDIR)/text."
+
+man:
+	$(SPHINXBUILD) -b man $(ALLSPHINXOPTS) $(BUILDDIR)/man
+	@echo
+	@echo "Build finished. The manual pages are in $(BUILDDIR)/man."
+
+changes:
+	$(SPHINXBUILD) -b changes $(ALLSPHINXOPTS) $(BUILDDIR)/changes
+	@echo
+	@echo "The overview file is in $(BUILDDIR)/changes."
+
+linkcheck:
+	$(SPHINXBUILD) -b linkcheck $(ALLSPHINXOPTS) $(BUILDDIR)/linkcheck
+	@echo
+	@echo "Link check complete; look for any errors in the above output " \
+	      "or in $(BUILDDIR)/linkcheck/output.txt."
+
+doctest:
+	$(SPHINXBUILD) -b doctest $(ALLSPHINXOPTS) $(BUILDDIR)/doctest
+	@echo "Testing of doctests in the sources finished, look at the " \
+	      "results in $(BUILDDIR)/doctest/output.txt."
diff --git a/testing/mozharness/external_tools/virtualenv/docs/changes.rst b/testing/mozharness/external_tools/virtualenv/docs/changes.rst
new file mode 100644
index 000000000..2df19f666
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/docs/changes.rst
@@ -0,0 +1,985 @@
+Release History
+===============
+
+15.0.1 (2016-03-17)
+-------------------
+
+* Print error message when DEST_DIR exists and is a file
+
+* Upgrade setuptools to 20.3
+
+* Upgrade pip to 8.1.1.
+
+
+15.0.0 (2016-03-05)
+-------------------
+
+* Remove the `virtualenv-N.N` script from the package; this can no longer be
+  correctly created from a wheel installation.
+  Resolves :issue:`851`, :issue:`692`
+
+* Remove accidental runtime dependency on pip by extracting certificate in the
+  subprocess.
+
+* Upgrade setuptools 20.2.2.
+
+* Upgrade pip to 8.1.0.
+
+
+14.0.6 (2016-02-07)
+-------------------
+
+* Upgrade setuptools to 20.0
+
+* Upgrade wheel to 0.29.0
+
+* Fix an error where virtualenv didn't pass in a working ssl certificate for
+  pip, causing "weird" errors related to ssl.
+
+
+14.0.5 (2016-02-01)
+-------------------
+
+* Homogenize drive letter casing for both prefixes and filenames. :issue:`858`
+
+
+14.0.4 (2016-01-31)
+-------------------
+
+* Upgrade setuptools to 19.6.2
+
+* Revert ac4ea65; only correct drive letter case.
+  Fixes :issue:`856`, :issue:`815`
+
+
+14.0.3 (2016-01-28)
+-------------------
+
+* Upgrade setuptools to 19.6.1
+
+
+14.0.2 (2016-01-28)
+-------------------
+
+* Upgrade setuptools to 19.6
+
+* Supress any errors from `unset` on different shells (:pull:`843`)
+
+* Normalize letter case for prefix path checking. Fixes :issue:`837`
+
+
+14.0.1 (2016-01-21)
+-------------------
+
+* Upgrade from pip 8.0.0 to 8.0.2.
+
+* Fix the default of ``--(no-)download`` to default to downloading.
+
+
+14.0.0 (2016-01-19)
+-------------------
+
+* **BACKWARDS INCOMPATIBLE** Drop support for Python 3.2.
+
+* Upgrade setuptools to 19.4
+
+* Upgrade wheel to 0.26.0
+
+* Upgrade pip to 8.0.0
+
+* Upgrade argparse to 1.4.0
+
+* Added support for ``python-config`` script (:pull:`798`)
+
+* Updated activate.fish (:pull:`589`) (:pull:`799`)
+
+* Account for a ``site.pyo`` correctly in some python implementations (:pull:`759`)
+
+* Properly restore an empty PS1 (:issue:`407`)
+
+* Properly remove ``pydoc`` when deactivating
+
+* Remove workaround for very old Mageia / Mandriva linuxes (:pull:`472`)
+
+* Added a space after virtualenv name in the prompt: ``(env) $PS1``
+
+* Make sure not to run a --user install when creating the virtualenv (:pull:`803`)
+
+* Remove virtualenv.py's path from sys.path when executing with a new
+  python. Fixes issue :issue:`779`, :issue:`763` (:pull:`805`)
+
+* Remove use of () in .bat files so ``Program Files (x86)`` works :issue:`35`
+
+* Download new releases of the preinstalled software from PyPI when there are
+  new releases available. This behavior can be disabled using
+  ``--no-download``.
+
+* Make ``--no-setuptools``, ``--no-pip``, and ``--no-wheel`` independent of
+  each other.
+
+
+13.1.2 (2015-08-23)
+-------------------
+
+* Upgrade pip to 7.1.2.
+
+
+13.1.1 (2015-08-20)
+-------------------
+
+* Upgrade pip to 7.1.1.
+
+* Upgrade setuptools to 18.2.
+
+* Make the activate script safe to use when bash is running with ``-u``.
+
+
+13.1.0 (2015-06-30)
+-------------------
+
+* Upgrade pip to 7.1.0
+
+* Upgrade setuptools to 18.0.1
+
+
+13.0.3 (2015-06-01)
+-------------------
+
+* Upgrade pip to 7.0.3
+
+
+13.0.2 (2015-06-01)
+-------------------
+
+* Upgrade pip to 7.0.2
+
+* Upgrade setuptools to 17.0
+
+
+13.0.1 (2015-05-22)
+-------------------
+
+* Upgrade pip to 7.0.1
+
+
+13.0.0 (2015-05-21)
+-------------------
+
+* Automatically install wheel when creating a new virutalenv. This can be
+  disabled by using the ``--no-wheel`` option.
+
+* Don't trust the current directory as a location to discover files to install
+  packages from.
+
+* Upgrade setuptools to 16.0.
+
+* Upgrade pip to 7.0.0.
+
+
+12.1.1 (2015-04-07)
+-------------------
+
+* Upgrade pip to 6.1.1
+
+
+12.1.0 (2015-04-07)
+-------------------
+
+* Upgrade setuptools to 15.0
+
+* Upgrade pip to 6.1.0
+
+
+12.0.7 (2015-02-04)
+-------------------
+
+* Upgrade pip to 6.0.8
+
+
+12.0.6 (2015-01-28)
+-------------------
+
+* Upgrade pip to 6.0.7
+
+* Upgrade setuptools to 12.0.5
+
+
+12.0.5 (2015-01-03)
+-------------------
+
+* Upgrade pip to 6.0.6
+
+* Upgrade setuptools to 11.0
+
+
+12.0.4 (2014-12-23)
+-------------------
+
+* Revert the fix to ``-p`` on Debian based pythons as it was broken in other
+  situations.
+
+* Revert several sys.path changes new in 12.0 which were breaking virtualenv.
+
+12.0.3 (2014-12-23)
+-------------------
+
+* Fix an issue where Debian based Pythons would fail when using -p with the
+  host Python.
+
+* Upgrade pip to 6.0.3
+
+12.0.2 (2014-12-23)
+-------------------
+
+* Upgraded pip to 6.0.2
+
+12.0.1 (2014-12-22)
+-------------------
+
+* Upgraded pip to 6.0.1
+
+
+12.0 (2014-12-22)
+-----------------
+
+* **PROCESS** Version numbers are now simply ``X.Y`` where the leading ``1``
+  has been dropped.
+* Split up documentation into structured pages
+* Now using pytest framework
+* Correct sys.path ordering for debian, issue #461
+* Correctly throws error on older Pythons, issue #619
+* Allow for empty $PATH, pull #601
+* Don't set prompt if $env:VIRTUAL_ENV_DISABLE_PROMPT is set for Powershell
+* Updated setuptools to 7.0
+
+1.11.6 (2014-05-16)
+-------------------
+
+* Updated setuptools to 3.6
+* Updated pip to 1.5.6
+
+1.11.5 (2014-05-03)
+-------------------
+
+* Updated setuptools to 3.4.4
+* Updated documentation to use https://virtualenv.pypa.io/
+* Updated pip to 1.5.5
+
+1.11.4 (2014-02-21)
+-------------------
+
+* Updated pip to 1.5.4
+
+
+1.11.3 (2014-02-20)
+-------------------
+
+* Updated setuptools to 2.2
+* Updated pip to 1.5.3
+
+
+1.11.2 (2014-01-26)
+-------------------
+
+* Fixed easy_install installed virtualenvs by updated pip to 1.5.2
+
+1.11.1 (2014-01-20)
+-------------------
+
+* Fixed an issue where pip and setuptools were not getting installed when using
+  the ``--system-site-packages`` flag.
+* Updated setuptools to fix an issue when installed with easy_install
+* Fixed an issue with Python 3.4 and sys.stdout encoding being set to ascii
+* Upgraded pip to v1.5.1
+* Upgraded setuptools to v2.1
+
+1.11 (2014-01-02)
+-----------------
+
+* **BACKWARDS INCOMPATIBLE** Switched to using wheels for the bundled copies of
+  setuptools and pip. Using sdists is no longer supported - users supplying
+  their own versions of pip/setuptools will need to provide wheels.
+* **BACKWARDS INCOMPATIBLE** Modified the handling of ``--extra-search-dirs``.
+  This option now works like pip's ``--find-links`` option, in that it adds
+  extra directories to search for compatible wheels for pip and setuptools.
+  The actual wheel selected is chosen based on version and compatibility, using
+  the same algorithm as ``pip install setuptools``.
+* Fixed #495, --always-copy was failing (#PR 511)
+* Upgraded pip to v1.5
+* Upgraded setuptools to v1.4
+
+1.10.1 (2013-08-07)
+-------------------
+
+* **New Signing Key** Release 1.10.1 is using a different key than normal with
+  fingerprint: 7C6B 7C5D 5E2B 6356 A926 F04F 6E3C BCE9 3372 DCFA
+* Upgraded pip to v1.4.1
+* Upgraded setuptools to v0.9.8
+
+
+1.10 (2013-07-23)
+-----------------
+
+* **BACKWARDS INCOMPATIBLE** Dropped support for Python 2.5. The minimum
+  supported Python version is now Python 2.6.
+
+* **BACKWARDS INCOMPATIBLE** Using ``virtualenv.py`` as an isolated script
+  (i.e. without an associated ``virtualenv_support`` directory) is no longer
+  supported for security reasons and will fail with an error.
+
+  Along with this, ``--never-download`` is now always pinned to ``True``, and
+  is only being maintained in the short term for backward compatibility
+  (Pull #412).
+
+* **IMPORTANT** Switched to the new setuptools (v0.9.7) which has been merged
+  with Distribute_ again and works for Python 2 and 3 with one codebase.
+  The ``--distribute`` and ``--setuptools`` options are now no-op.
+
+* Updated to pip 1.4.
+
+* Added support for PyPy3k
+
+* Added the option to use a version number with the ``-p`` option to get the
+  system copy of that Python version (Windows only)
+
+* Removed embedded ``ez_setup.py``, ``distribute_setup.py`` and
+  ``distribute_from_egg.py`` files as part of switching to merged setuptools.
+
+* Fixed ``--relocatable`` to work better on Windows.
+
+* Fixed issue with readline on Windows.
+
+.. _Distribute: https://pypi.python.org/pypi/distribute
+
+1.9.1 (2013-03-08)
+------------------
+
+* Updated to pip 1.3.1 that fixed a major backward incompatible change of
+  parsing URLs to externally hosted packages that got accidentily included
+  in pip 1.3.
+
+1.9 (2013-03-07)
+----------------
+
+* Unset VIRTUAL_ENV environment variable in deactivate.bat (Pull #364)
+* Upgraded distribute to 0.6.34.
+* Added ``--no-setuptools`` and ``--no-pip`` options (Pull #336).
+* Fixed Issue #373. virtualenv-1.8.4 was failing in cygwin (Pull #382).
+* Fixed Issue #378. virtualenv is now "multiarch" aware on debian/ubuntu (Pull #379).
+* Fixed issue with readline module path on pypy and OSX (Pull #374).
+* Made 64bit detection compatible with Python 2.5 (Pull #393).
+
+
+1.8.4 (2012-11-25)
+------------------
+
+* Updated distribute to 0.6.31. This fixes #359 (numpy install regression) on
+  UTF-8 platforms, and provides a workaround on other platforms:
+  ``PYTHONIOENCODING=utf8 pip install numpy``.
+
+* When installing virtualenv via curl, don't forget to filter out arguments
+  the distribute setup script won't understand. Fixes #358.
+
+* Added some more integration tests.
+
+* Removed the unsupported embedded setuptools egg for Python 2.4 to reduce
+  file size.
+
+1.8.3 (2012-11-21)
+------------------
+
+* Fixed readline on OS X. Thanks minrk
+
+* Updated distribute to 0.6.30 (improves our error reporting, plus new
+  distribute features and fixes). Thanks Gabriel (g2p)
+
+* Added compatibility with multiarch Python (Python 3.3 for example). Added an
+  integration test. Thanks Gabriel (g2p)
+
+* Added ability to install distribute from a user-provided egg, rather than the
+  bundled sdist, for better speed. Thanks Paul Moore.
+
+* Make the creation of lib64 symlink smarter about already-existing symlink,
+  and more explicit about full paths. Fixes #334 and #330. Thanks Jeremy Orem.
+
+* Give lib64 site-dir preference over lib on 64-bit systems, to avoid wrong
+  32-bit compiles in the venv. Fixes #328. Thanks Damien Nozay.
+
+* Fix a bug with prompt-handling in ``activate.csh`` in non-interactive csh
+  shells. Fixes #332. Thanks Benjamin Root for report and patch.
+
+* Make it possible to create a virtualenv from within a Python
+  3.3. pyvenv. Thanks Chris McDonough for the report.
+
+* Add optional --setuptools option to be able to switch to it in case
+  distribute is the default (like in Debian).
+
+1.8.2 (2012-09-06)
+------------------
+
+* Updated the included pip version to 1.2.1 to fix regressions introduced
+  there in 1.2.
+
+
+1.8.1 (2012-09-03)
+------------------
+
+* Fixed distribute version used with `--never-download`. Thanks michr for
+  report and patch.
+
+* Fix creating Python 3.3 based virtualenvs by unsetting the
+  ``__PYVENV_LAUNCHER__`` environment variable in subprocesses.
+
+
+1.8 (2012-09-01)
+----------------
+
+* **Dropped support for Python 2.4** The minimum supported Python version is
+  now Python 2.5.
+
+* Fix `--relocatable` on systems that use lib64. Fixes #78. Thanks Branden
+  Rolston.
+
+* Symlink some additional modules under Python 3. Fixes #194. Thanks Vinay
+  Sajip, Ian Clelland, and Stefan Holek for the report.
+
+* Fix ``--relocatable`` when a script uses ``__future__`` imports. Thanks
+  Branden Rolston.
+
+* Fix a bug in the config option parser that prevented setting negative
+  options with environment variables. Thanks Ralf Schmitt.
+
+* Allow setting ``--no-site-packages`` from the config file.
+
+* Use ``/usr/bin/multiarch-platform`` if available to figure out the include
+  directory. Thanks for the patch, Mika Laitio.
+
+* Fix ``install_name_tool`` replacement to work on Python 3.X.
+
+* Handle paths of users' site-packages on Mac OS X correctly when changing
+  the prefix.
+
+* Updated the embedded version of distribute to 0.6.28 and pip to 1.2.
+
+
+1.7.2 (2012-06-22)
+------------------
+
+* Updated to distribute 0.6.27.
+
+* Fix activate.fish on OS X. Fixes #8. Thanks David Schoonover.
+
+* Create a virtualenv-x.x script with the Python version when installing, so
+  virtualenv for multiple Python versions can be installed to the same
+  script location. Thanks Miki Tebeka.
+
+* Restored ability to create a virtualenv with a path longer than 78
+  characters, without breaking creation of virtualenvs with non-ASCII paths.
+  Thanks, Bradley Ayers.
+
+* Added ability to create virtualenvs without having installed Apple's
+  developers tools (using an own implementation of ``install_name_tool``).
+  Thanks Mike Hommey.
+
+* Fixed PyPy and Jython support on Windows. Thanks Konstantin Zemlyak.
+
+* Added pydoc script to ease use. Thanks Marc Abramowitz. Fixes #149.
+
+* Fixed creating a bootstrap script on Python 3. Thanks Raul Leal. Fixes #280.
+
+* Fixed inconsistency when having set the ``PYTHONDONTWRITEBYTECODE`` env var
+  with the --distribute option or the ``VIRTUALENV_USE_DISTRIBUTE`` env var.
+  ``VIRTUALENV_USE_DISTRIBUTE`` is now considered again as a legacy alias.
+
+
+1.7.1.2 (2012-02-17)
+--------------------
+
+* Fixed minor issue in `--relocatable`. Thanks, Cap Petschulat.
+
+
+1.7.1.1 (2012-02-16)
+--------------------
+
+* Bumped the version string in ``virtualenv.py`` up, too.
+
+* Fixed rST rendering bug of long description.
+
+
+1.7.1 (2012-02-16)
+------------------
+
+* Update embedded pip to version 1.1.
+
+* Fix `--relocatable` under Python 3. Thanks Doug Hellmann.
+
+* Added environ PATH modification to activate_this.py. Thanks Doug
+  Napoleone. Fixes #14.
+
+* Support creating virtualenvs directly from a Python build directory on
+  Windows. Thanks CBWhiz. Fixes #139.
+
+* Use non-recursive symlinks to fix things up for posix_local install
+  scheme. Thanks michr.
+
+* Made activate script available for use with msys and cygwin on Windows.
+  Thanks Greg Haskins, Cliff Xuan, Jonathan Griffin and Doug Napoleone.
+  Fixes #176.
+
+* Fixed creation of virtualenvs on Windows when Python is not installed for
+  all users. Thanks Anatoly Techtonik for report and patch and Doug
+  Napoleone for testing and confirmation. Fixes #87.
+
+* Fixed creation of virtualenvs using -p in installs where some modules
+  that ought to be in the standard library (e.g. `readline`) are actually
+  installed in `site-packages` next to `virtualenv.py`. Thanks Greg Haskins
+  for report and fix. Fixes #167.
+
+* Added activation script for Powershell (signed by Jannis Leidel). Many
+  thanks to Jason R. Coombs.
+
+
+1.7 (2011-11-30)
+----------------
+
+* Gave user-provided ``--extra-search-dir`` priority over default dirs for
+  finding setuptools/distribute (it already had priority for finding pip).
+  Thanks Ethan Jucovy.
+
+* Updated embedded Distribute release to 0.6.24. Thanks Alex Gronholm.
+
+* Made ``--no-site-packages`` behavior the default behavior.  The
+  ``--no-site-packages`` flag is still permitted, but displays a warning when
+  used. Thanks Chris McDonough.
+
+* New flag: ``--system-site-packages``; this flag should be passed to get the
+  previous default global-site-package-including behavior back.
+
+* Added ability to set command options as environment variables and options
+  in a ``virtualenv.ini`` file.
+
+* Fixed various encoding related issues with paths. Thanks Gunnlaugur Thor Briem.
+
+* Made ``virtualenv.py`` script executable.
+
+
+1.6.4 (2011-07-21)
+------------------
+
+* Restored ability to run on Python 2.4, too.
+
+
+1.6.3 (2011-07-16)
+------------------
+
+* Restored ability to run on Python < 2.7.
+
+
+1.6.2 (2011-07-16)
+------------------
+
+* Updated embedded distribute release to 0.6.19.
+
+* Updated embedded pip release to 1.0.2.
+
+* Fixed #141 - Be smarter about finding pkg_resources when using the
+  non-default Python interpreter (by using the ``-p`` option).
+
+* Fixed #112 - Fixed path in docs.
+
+* Fixed #109 - Corrected doctests of a Logger method.
+
+* Fixed #118 - Fixed creating virtualenvs on platforms that use the
+  "posix_local" install scheme, such as Ubuntu with Python 2.7.
+
+* Add missing library to Python 3 virtualenvs (``_dummy_thread``).
+
+
+1.6.1 (2011-04-30)
+------------------
+
+* Start to use git-flow.
+
+* Added support for PyPy 1.5
+
+* Fixed #121 -- added sanity-checking of the -p argument. Thanks Paul Nasrat.
+
+* Added progress meter for pip installation as well as setuptools. Thanks Ethan
+  Jucovy.
+
+* Added --never-download and --search-dir options. Thanks Ethan Jucovy.
+
+
+1.6
+---
+
+* Added Python 3 support! Huge thanks to Vinay Sajip and Vitaly Babiy.
+
+* Fixed creation of virtualenvs on Mac OS X when standard library modules
+  (readline) are installed outside the standard library.
+
+* Updated bundled pip to 1.0.
+
+
+1.5.2
+-----
+
+* Moved main repository to Github: https://github.com/pypa/virtualenv
+
+* Transferred primary maintenance from Ian to Jannis Leidel, Carl Meyer and Brian Rosner
+
+* Fixed a few more pypy related bugs.
+
+* Updated bundled pip to 0.8.2.
+
+* Handed project over to new team of maintainers.
+
+* Moved virtualenv to Github at https://github.com/pypa/virtualenv
+
+
+1.5.1
+-----
+
+* Added ``_weakrefset`` requirement for Python 2.7.1.
+
+* Fixed Windows regression in 1.5
+
+
+1.5
+---
+
+* Include pip 0.8.1.
+
+* Add support for PyPy.
+
+* Uses a proper temporary dir when installing environment requirements.
+
+* Add ``--prompt`` option to be able to override the default prompt prefix.
+
+* Fix an issue with ``--relocatable`` on Windows.
+
+* Fix issue with installing the wrong version of distribute.
+
+* Add fish and csh activate scripts.
+
+
+1.4.9
+-----
+
+* Include pip 0.7.2
+
+
+1.4.8
+-----
+
+* Fix for Mac OS X Framework builds that use
+  ``--universal-archs=intel``
+
+* Fix ``activate_this.py`` on Windows.
+
+* Allow ``$PYTHONHOME`` to be set, so long as you use ``source
+  bin/activate`` it will get unset; if you leave it set and do not
+  activate the environment it will still break the environment.
+
+* Include pip 0.7.1
+
+
+1.4.7
+-----
+
+* Include pip 0.7
+
+
+1.4.6
+-----
+
+* Allow ``activate.sh`` to skip updating the prompt (by setting
+  ``$VIRTUAL_ENV_DISABLE_PROMPT``).
+
+
+1.4.5
+-----
+
+* Include pip 0.6.3
+
+* Fix ``activate.bat`` and ``deactivate.bat`` under Windows when
+  ``PATH`` contained a parenthesis
+
+
+1.4.4
+-----
+
+* Include pip 0.6.2 and Distribute 0.6.10
+
+* Create the ``virtualenv`` script even when Setuptools isn't
+  installed
+
+* Fix problem with ``virtualenv --relocate`` when ``bin/`` has
+  subdirectories (e.g., ``bin/.svn/``); from Alan Franzoni.
+
+* If you set ``$VIRTUALENV_DISTRIBUTE`` then virtualenv will use
+  Distribute by default (so you don't have to remember to use
+  ``--distribute``).
+
+
+1.4.3
+-----
+
+* Include pip 0.6.1
+
+
+1.4.2
+-----
+
+* Fix pip installation on Windows
+
+* Fix use of stand-alone ``virtualenv.py`` (and boot scripts)
+
+* Exclude ~/.local (user site-packages) from environments when using
+  ``--no-site-packages``
+
+
+1.4.1
+-----
+
+* Include pip 0.6
+
+
+1.4
+---
+
+* Updated setuptools to 0.6c11
+
+* Added the --distribute option
+
+* Fixed packaging problem of support-files
+
+
+1.3.4
+-----
+
+* Virtualenv now copies the actual embedded Python binary on
+  Mac OS X to fix a hang on Snow Leopard (10.6).
+
+* Fail more gracefully on Windows when ``win32api`` is not installed.
+
+* Fix site-packages taking precedent over Jython's ``__classpath__``
+  and also specially handle the new ``__pyclasspath__`` entry in
+  ``sys.path``.
+
+* Now copies Jython's ``registry`` file to the virtualenv if it exists.
+
+* Better find libraries when compiling extensions on Windows.
+
+* Create ``Scripts\pythonw.exe`` on Windows.
+
+* Added support for the Debian/Ubuntu
+  ``/usr/lib/pythonX.Y/dist-packages`` directory.
+
+* Set ``distutils.sysconfig.get_config_vars()['LIBDIR']`` (based on
+  ``sys.real_prefix``) which is reported to help building on Windows.
+
+* Make ``deactivate`` work on ksh
+
+* Fixes for ``--python``: make it work with ``--relocatable`` and the
+  symlink created to the exact Python version.
+
+
+1.3.3
+-----
+
+* Use Windows newlines in ``activate.bat``, which has been reported to help
+  when using non-ASCII directory names.
+
+* Fixed compatibility with Jython 2.5b1.
+
+* Added a function ``virtualenv.install_python`` for more fine-grained
+  access to what ``virtualenv.create_environment`` does.
+
+* Fix `a problem <https://bugs.launchpad.net/virtualenv/+bug/241581>`_
+  with Windows and paths that contain spaces.
+
+* If ``/path/to/env/.pydistutils.cfg`` exists (or
+  ``/path/to/env/pydistutils.cfg`` on Windows systems) then ignore
+  ``~/.pydistutils.cfg`` and use that other file instead.
+
+* Fix ` a problem
+  <https://bugs.launchpad.net/virtualenv/+bug/340050>`_ picking up
+  some ``.so`` libraries in ``/usr/local``.
+
+
+1.3.2
+-----
+
+* Remove the ``[install] prefix = ...`` setting from the virtualenv
+  ``distutils.cfg`` -- this has been causing problems for a lot of
+  people, in rather obscure ways.
+
+* If you use a boot script it will attempt to import ``virtualenv``
+  and find a pre-downloaded Setuptools egg using that.
+
+* Added platform-specific paths, like ``/usr/lib/pythonX.Y/plat-linux2``
+
+
+1.3.1
+-----
+
+* Real Python 2.6 compatibility.  Backported the Python 2.6 updates to
+  ``site.py``, including `user directories
+  <http://docs.python.org/dev/whatsnew/2.6.html#pep-370-per-user-site-packages-directory>`_
+  (this means older versions of Python will support user directories,
+  whether intended or not).
+
+* Always set ``[install] prefix`` in ``distutils.cfg`` -- previously
+  on some platforms where a system-wide ``distutils.cfg`` was present
+  with a ``prefix`` setting, packages would be installed globally
+  (usually in ``/usr/local/lib/pythonX.Y/site-packages``).
+
+* Sometimes Cygwin seems to leave ``.exe`` off ``sys.executable``; a
+  workaround is added.
+
+* Fix ``--python`` option.
+
+* Fixed handling of Jython environments that use a
+  jython-complete.jar.
+
+
+1.3
+---
+
+* Update to Setuptools 0.6c9
+* Added an option ``virtualenv --relocatable EXISTING_ENV``, which
+  will make an existing environment "relocatable" -- the paths will
+  not be absolute in scripts, ``.egg-info`` and ``.pth`` files.  This
+  may assist in building environments that can be moved and copied.
+  You have to run this *after* any new packages installed.
+* Added ``bin/activate_this.py``, a file you can use like
+  ``execfile("path_to/activate_this.py",
+  dict(__file__="path_to/activate_this.py"))`` -- this will activate
+  the environment in place, similar to what `the mod_wsgi example
+  does <http://code.google.com/p/modwsgi/wiki/VirtualEnvironments>`_.
+* For Mac framework builds of Python, the site-packages directory
+  ``/Library/Python/X.Y/site-packages`` is added to ``sys.path``, from
+  Andrea Rech.
+* Some platform-specific modules in Macs are added to the path now
+  (``plat-darwin/``, ``plat-mac/``, ``plat-mac/lib-scriptpackages``),
+  from Andrea Rech.
+* Fixed a small Bashism in the ``bin/activate`` shell script.
+* Added ``__future__`` to the list of required modules, for Python
+  2.3.  You'll still need to backport your own ``subprocess`` module.
+* Fixed the ``__classpath__`` entry in Jython's ``sys.path`` taking
+  precedent over virtualenv's libs.
+
+
+1.2
+---
+
+* Added a ``--python`` option to select the Python interpreter.
+* Add ``warnings`` to the modules copied over, for Python 2.6 support.
+* Add ``sets`` to the module copied over for Python 2.3 (though Python
+  2.3 still probably doesn't work).
+
+
+1.1.1
+-----
+
+* Added support for Jython 2.5.
+
+
+1.1
+---
+
+* Added support for Python 2.6.
+* Fix a problem with missing ``DLLs/zlib.pyd`` on Windows.  Create
+* ``bin/python`` (or ``bin/python.exe``) even when you run virtualenv
+  with an interpreter named, e.g., ``python2.4``
+* Fix MacPorts Python
+* Added --unzip-setuptools option
+* Update to Setuptools 0.6c8
+* If the current directory is not writable, run ez_setup.py in ``/tmp``
+* Copy or symlink over the ``include`` directory so that packages will
+  more consistently compile.
+
+
+1.0
+---
+
+* Fix build on systems that use ``/usr/lib64``, distinct from
+  ``/usr/lib`` (specifically CentOS x64).
+* Fixed bug in ``--clear``.
+* Fixed typos in ``deactivate.bat``.
+* Preserve ``$PYTHONPATH`` when calling subprocesses.
+
+
+0.9.2
+-----
+
+* Fix include dir copying on Windows (makes compiling possible).
+* Include the main ``lib-tk`` in the path.
+* Patch ``distutils.sysconfig``: ``get_python_inc`` and
+  ``get_python_lib`` to point to the global locations.
+* Install ``distutils.cfg`` before Setuptools, so that system
+  customizations of ``distutils.cfg`` won't effect the installation.
+* Add ``bin/pythonX.Y`` to the virtualenv (in addition to
+  ``bin/python``).
+* Fixed an issue with Mac Framework Python builds, and absolute paths
+  (from Ronald Oussoren).
+
+
+0.9.1
+-----
+
+* Improve ability to create a virtualenv from inside a virtualenv.
+* Fix a little bug in ``bin/activate``.
+* Actually get ``distutils.cfg`` to work reliably.
+
+
+0.9
+---
+
+* Added ``lib-dynload`` and ``config`` to things that need to be
+  copied over in an environment.
+* Copy over or symlink the ``include`` directory, so that you can
+  build packages that need the C headers.
+* Include a ``distutils`` package, so you can locally update
+  ``distutils.cfg`` (in ``lib/pythonX.Y/distutils/distutils.cfg``).
+* Better avoid downloading Setuptools, and hitting PyPI on environment
+  creation.
+* Fix a problem creating a ``lib64/`` directory.
+* Should work on MacOSX Framework builds (the default Python
+  installations on Mac).  Thanks to Ronald Oussoren.
+
+
+0.8.4
+-----
+
+* Windows installs would sometimes give errors about ``sys.prefix`` that
+  were inaccurate.
+* Slightly prettier output.
+
+
+0.8.3
+-----
+
+* Added support for Windows.
+
+
+0.8.2
+-----
+
+* Give a better warning if you are on an unsupported platform (Mac
+  Framework Pythons, and Windows).
+* Give error about running while inside a workingenv.
+* Give better error message about Python 2.3.
+
+
+0.8.1
+-----
+
+Fixed packaging of the library.
+
+
+0.8
+---
+
+Initial release.  Everything is changed and new!
diff --git a/testing/mozharness/external_tools/virtualenv/docs/conf.py b/testing/mozharness/external_tools/virtualenv/docs/conf.py
new file mode 100644
index 000000000..9332aa1bc
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/docs/conf.py
@@ -0,0 +1,153 @@
+# -*- coding: utf-8 -*-
+#
+# Paste documentation build configuration file, created by
+# sphinx-quickstart on Tue Apr 22 22:08:49 2008.
+#
+# This file is execfile()d with the current directory set to its containing dir.
+#
+# The contents of this file are pickled, so don't put values in the namespace
+# that aren't pickleable (module imports are okay, they're removed automatically).
+#
+# All configuration values have a default value; values that are commented out
+# serve to show the default value.
+
+import os
+import sys
+
+on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
+
+# If your extensions are in another directory, add it here.
+sys.path.insert(0, os.path.abspath(os.pardir))
+
+# General configuration
+# ---------------------
+
+# Add any Sphinx extension module names here, as strings. They can be extensions
+# coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
+extensions = ['sphinx.ext.autodoc', 'sphinx.ext.extlinks']
+
+# Add any paths that contain templates here, relative to this directory.
+#templates_path = ['_templates']
+
+# The suffix of source filenames.
+source_suffix = '.rst'
+
+# The master toctree document.
+master_doc = 'index'
+
+# General substitutions.
+project = 'virtualenv'
+copyright = '2007-2014, Ian Bicking, The Open Planning Project, PyPA'
+
+# The default replacements for |version| and |release|, also used in various
+# other places throughout the built documents.
+try:
+    from virtualenv import __version__
+    # The short X.Y version.
+    version = '.'.join(__version__.split('.')[:2])
+    # The full version, including alpha/beta/rc tags.
+    release = __version__
+except ImportError:
+    version = release = 'dev'
+
+# There are two options for replacing |today|: either, you set today to some
+# non-false value, then it is used:
+#today = ''
+# Else, today_fmt is used as the format for a strftime call.
+today_fmt = '%B %d, %Y'
+
+# List of documents that shouldn't be included in the build.
+unused_docs = []
+
+# If true, '()' will be appended to :func: etc. cross-reference text.
+#add_function_parentheses = True
+
+# If true, the current module name will be prepended to all description
+# unit titles (such as .. function::).
+#add_module_names = True
+
+# If true, sectionauthor and moduleauthor directives will be shown in the
+# output. They are ignored by default.
+#show_authors = False
+
+# The name of the Pygments (syntax highlighting) style to use.
+pygments_style = 'sphinx'
+
+extlinks = {
+    'issue': ('https://github.com/pypa/virtualenv/issues/%s', '#'),
+    'pull': ('https://github.com/pypa/virtualenv/pull/%s', 'PR #'),
+}
+
+
+# Options for HTML output
+# -----------------------
+
+# The style sheet to use for HTML and HTML Help pages. A file of that name
+# must exist either in Sphinx' static/ path, or in one of the custom paths
+# given in html_static_path.
+#html_style = 'default.css'
+
+html_theme = 'default'
+if not on_rtd:
+    try:
+        import sphinx_rtd_theme
+        html_theme = 'sphinx_rtd_theme'
+        html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
+    except ImportError:
+        pass
+
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+# html_static_path = ['_static']
+
+# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
+# using the given strftime format.
+html_last_updated_fmt = '%b %d, %Y'
+
+# If true, SmartyPants will be used to convert quotes and dashes to
+# typographically correct entities.
+#html_use_smartypants = True
+
+# Content template for the index page.
+#html_index = ''
+
+# Custom sidebar templates, maps document names to template names.
+#html_sidebars = {}
+
+# Additional templates that should be rendered to pages, maps page names to
+# template names.
+#html_additional_pages = {}
+
+# If false, no module index is generated.
+#html_use_modindex = True
+
+# If true, the reST sources are included in the HTML build as _sources/<name>.
+#html_copy_source = True
+
+# Output file base name for HTML help builder.
+htmlhelp_basename = 'Pastedoc'
+
+
+# Options for LaTeX output
+# ------------------------
+
+# The paper size ('letter' or 'a4').
+#latex_paper_size = 'letter'
+
+# The font size ('10pt', '11pt' or '12pt').
+#latex_font_size = '10pt'
+
+# Grouping the document tree into LaTeX files. List of tuples
+# (source start file, target name, title, author, document class [howto/manual]).
+#latex_documents = []
+
+# Additional stuff for the LaTeX preamble.
+#latex_preamble = ''
+
+# Documents to append as an appendix to all manuals.
+#latex_appendices = []
+
+# If false, no module index is generated.
+#latex_use_modindex = True
diff --git a/testing/mozharness/external_tools/virtualenv/docs/development.rst b/testing/mozharness/external_tools/virtualenv/docs/development.rst
new file mode 100644
index 000000000..aba2785a3
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/docs/development.rst
@@ -0,0 +1,61 @@
+Development
+===========
+
+Contributing
+------------
+
+Refer to the `pip development`_ documentation - it applies equally to
+virtualenv, except that virtualenv issues should filed on the `virtualenv
+repo`_ at GitHub.
+
+Virtualenv's release schedule is tied to pip's -- each time there's a new pip
+release, there will be a new virtualenv release that bundles the new version of
+pip.
+
+Files in the `virtualenv_embedded/` subdirectory are embedded into
+`virtualenv.py` itself as base64-encoded strings (in order to support
+single-file use of `virtualenv.py` without installing it). If your patch
+changes any file in `virtualenv_embedded/`, run `bin/rebuild-script.py` to
+update the embedded version of that file in `virtualenv.py`; commit that and
+submit it as part of your patch / pull request.
+
+.. _pip development: http://www.pip-installer.org/en/latest/development.html
+.. _virtualenv repo: https://github.com/pypa/virtualenv/
+
+Running the tests
+-----------------
+
+Virtualenv's test suite is small and not yet at all comprehensive, but we aim
+to grow it.
+
+The easy way to run tests (handles test dependencies automatically)::
+
+    $ python setup.py test
+
+If you want to run only a selection of the tests, you'll need to run them
+directly with pytest instead. Create a virtualenv, and install required
+packages::
+
+    $ pip install pytest mock
+
+Run pytest::
+
+    $ pytest
+
+Or select just a single test file to run::
+
+    $ pytest tests/test_virtualenv
+
+Status and License
+------------------
+
+``virtualenv`` is a successor to `workingenv
+<http://cheeseshop.python.org/pypi/workingenv.py>`_, and an extension
+of `virtual-python
+<http://peak.telecommunity.com/DevCenter/EasyInstall#creating-a-virtual-python>`_.
+
+It was written by Ian Bicking, sponsored by the `Open Planning
+Project <http://openplans.org>`_ and is now maintained by a
+`group of developers <https://github.com/pypa/virtualenv/raw/master/AUTHORS.txt>`_.
+It is licensed under an
+`MIT-style permissive license <https://github.com/pypa/virtualenv/raw/master/LICENSE.txt>`_.
diff --git a/testing/mozharness/external_tools/virtualenv/docs/index.rst b/testing/mozharness/external_tools/virtualenv/docs/index.rst
new file mode 100644
index 000000000..e745a87b7
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/docs/index.rst
@@ -0,0 +1,137 @@
+Virtualenv
+==========
+
+`Mailing list <http://groups.google.com/group/python-virtualenv>`_ |
+`Issues <https://github.com/pypa/virtualenv/issues>`_ |
+`Github <https://github.com/pypa/virtualenv>`_ |
+`PyPI <https://pypi.python.org/pypi/virtualenv/>`_ |
+User IRC: #pypa
+Dev IRC: #pypa-dev
+
+Introduction
+------------
+
+``virtualenv`` is a tool to create isolated Python environments.
+
+The basic problem being addressed is one of dependencies and versions,
+and indirectly permissions. Imagine you have an application that
+needs version 1 of LibFoo, but another application requires version
+2. How can you use both these applications?  If you install
+everything into ``/usr/lib/python2.7/site-packages`` (or whatever your
+platform's standard location is), it's easy to end up in a situation
+where you unintentionally upgrade an application that shouldn't be
+upgraded.
+
+Or more generally, what if you want to install an application *and
+leave it be*?  If an application works, any change in its libraries or
+the versions of those libraries can break the application.
+
+Also, what if you can't install packages into the global
+``site-packages`` directory?  For instance, on a shared host.
+
+In all these cases, ``virtualenv`` can help you. It creates an
+environment that has its own installation directories, that doesn't
+share libraries with other virtualenv environments (and optionally
+doesn't access the globally installed libraries either).
+
+.. comment: split here
+
+.. toctree::
+   :maxdepth: 2
+
+   installation
+   userguide
+   reference
+   development
+   changes
+
+.. warning::
+
+   Python bugfix releases 2.6.8, 2.7.3, 3.1.5 and 3.2.3 include a change that
+   will cause "import random" to fail with "cannot import name urandom" on any
+   virtualenv created on a Unix host with an earlier release of Python
+   2.6/2.7/3.1/3.2, if the underlying system Python is upgraded. This is due to
+   the fact that a virtualenv uses the system Python's standard library but
+   contains its own copy of the Python interpreter, so an upgrade to the system
+   Python results in a mismatch between the version of the Python interpreter
+   and the version of the standard library. It can be fixed by removing
+   ``$ENV/bin/python`` and re-running virtualenv on the same target directory
+   with the upgraded Python.
+
+Other Documentation and Links
+-----------------------------
+
+* `Blog announcement of virtualenv`__.
+
+  .. __: http://blog.ianbicking.org/2007/10/10/workingenv-is-dead-long-live-virtualenv/
+
+* James Gardner has written a tutorial on using `virtualenv with
+  Pylons
+  <http://wiki.pylonshq.com/display/pylonscookbook/Using+a+Virtualenv+Sandbox>`_.
+
+* Chris Perkins created a `showmedo video including virtualenv
+  <http://showmedo.com/videos/video?name=2910000&fromSeriesID=291>`_.
+
+* Doug Hellmann's `virtualenvwrapper`_ is a useful set of scripts to make
+  your workflow with many virtualenvs even easier. `His initial blog post on it`__.
+  He also wrote `an example of using virtualenv to try IPython`__.
+
+  .. _virtualenvwrapper: https://pypi.python.org/pypi/virtualenvwrapper/
+  .. __: https://doughellmann.com/blog/2008/05/01/virtualenvwrapper/
+  .. __: https://doughellmann.com/blog/2008/02/01/ipython-and-virtualenv/
+
+* `Pew`_ is another wrapper for virtualenv that makes use of a different
+  activation technique.
+
+  .. _Pew: https://pypi.python.org/pypi/pew/
+
+* `Using virtualenv with mod_wsgi
+  <http://code.google.com/p/modwsgi/wiki/VirtualEnvironments>`_.
+
+* `virtualenv commands
+  <https://github.com/thisismedium/virtualenv-commands>`_ for some more
+  workflow-related tools around virtualenv.
+
+* PyCon US 2011 talk: `Reverse-engineering Ian Bicking's brain: inside pip and virtualenv
+  <http://pyvideo.org/video/568/reverse-engineering-ian-bicking--39-s-brain--insi>`_.
+  By the end of the talk, you'll have a good idea exactly how pip
+  and virtualenv do their magic, and where to go looking in the source
+  for particular behaviors or bug fixes.
+
+Compare & Contrast with Alternatives
+------------------------------------
+
+There are several alternatives that create isolated environments:
+
+* ``workingenv`` (which I do not suggest you use anymore) is the
+  predecessor to this library. It used the main Python interpreter,
+  but relied on setting ``$PYTHONPATH`` to activate the environment.
+  This causes problems when running Python scripts that aren't part of
+  the environment (e.g., a globally installed ``hg`` or ``bzr``). It
+  also conflicted a lot with Setuptools.
+
+* `virtual-python
+  <http://peak.telecommunity.com/DevCenter/EasyInstall#creating-a-virtual-python>`_
+  is also a predecessor to this library. It uses only symlinks, so it
+  couldn't work on Windows. It also symlinks over the *entire*
+  standard library and global ``site-packages``. As a result, it
+  won't see new additions to the global ``site-packages``.
+
+  This script only symlinks a small portion of the standard library
+  into the environment, and so on Windows it is feasible to simply
+  copy these files over. Also, it creates a new/empty
+  ``site-packages`` and also adds the global ``site-packages`` to the
+  path, so updates are tracked separately. This script also installs
+  Setuptools automatically, saving a step and avoiding the need for
+  network access.
+
+* `zc.buildout <http://pypi.python.org/pypi/zc.buildout>`_ doesn't
+  create an isolated Python environment in the same style, but
+  achieves similar results through a declarative config file that sets
+  up scripts with very particular packages. As a declarative system,
+  it is somewhat easier to repeat and manage, but more difficult to
+  experiment with. ``zc.buildout`` includes the ability to setup
+  non-Python systems (e.g., a database server or an Apache instance).
+
+I *strongly* recommend anyone doing application development or
+deployment use one of these tools.
diff --git a/testing/mozharness/external_tools/virtualenv/docs/installation.rst b/testing/mozharness/external_tools/virtualenv/docs/installation.rst
new file mode 100644
index 000000000..3006d7617
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/docs/installation.rst
@@ -0,0 +1,58 @@
+Installation
+============
+
+.. warning::
+
+    We advise installing virtualenv-1.9 or greater. Prior to version 1.9, the
+    pip included in virtualenv did not download from PyPI over SSL.
+
+.. warning::
+
+    When using pip to install virtualenv, we advise using pip 1.3 or greater.
+    Prior to version 1.3, pip did not download from PyPI over SSL.
+
+.. warning::
+
+    We advise against using easy_install to install virtualenv when using
+    setuptools < 0.9.7, because easy_install didn't download from PyPI over SSL
+    and was broken in some subtle ways.
+
+To install globally with `pip` (if you have pip 1.3 or greater installed globally):
+
+::
+
+ $ [sudo] pip install virtualenv
+
+Or to get the latest unreleased dev version:
+
+::
+
+ $ [sudo] pip install https://github.com/pypa/virtualenv/tarball/develop
+
+
+To install version X.X globally from source:
+
+::
+
+ $ curl -O https://pypi.python.org/packages/source/v/virtualenv/virtualenv-X.X.tar.gz
+ $ tar xvfz virtualenv-X.X.tar.gz
+ $ cd virtualenv-X.X
+ $ [sudo] python setup.py install
+
+
+To *use* locally from source:
+
+::
+
+ $ curl -O https://pypi.python.org/packages/source/v/virtualenv/virtualenv-X.X.tar.gz
+ $ tar xvfz virtualenv-X.X.tar.gz
+ $ cd virtualenv-X.X
+ $ python virtualenv.py myVE
+
+.. note::
+
+    The ``virtualenv.py`` script is *not* supported if run without the
+    necessary pip/setuptools/virtualenv distributions available locally. All
+    of the installation methods above include a ``virtualenv_support``
+    directory alongside ``virtualenv.py`` which contains a complete set of
+    pip and setuptools distributions, and so are fully supported.
diff --git a/testing/mozharness/external_tools/virtualenv/docs/make.bat b/testing/mozharness/external_tools/virtualenv/docs/make.bat
new file mode 100644
index 000000000..aa5c189fc
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/docs/make.bat
@@ -0,0 +1,170 @@
+@ECHO OFF
+
+REM Command file for Sphinx documentation
+
+if "%SPHINXBUILD%" == "" (
+	set SPHINXBUILD=sphinx-build
+)
+set BUILDDIR=_build
+set ALLSPHINXOPTS=-d %BUILDDIR%/doctrees %SPHINXOPTS% .
+if NOT "%PAPER%" == "" (
+	set ALLSPHINXOPTS=-D latex_paper_size=%PAPER% %ALLSPHINXOPTS%
+)
+
+if "%1" == "" goto help
+
+if "%1" == "help" (
+	:help
+	echo.Please use `make ^<target^>` where ^<target^> is one of
+	echo.  html       to make standalone HTML files
+	echo.  dirhtml    to make HTML files named index.html in directories
+	echo.  singlehtml to make a single large HTML file
+	echo.  pickle     to make pickle files
+	echo.  json       to make JSON files
+	echo.  htmlhelp   to make HTML files and a HTML help project
+	echo.  qthelp     to make HTML files and a qthelp project
+	echo.  devhelp    to make HTML files and a Devhelp project
+	echo.  epub       to make an epub
+	echo.  latex      to make LaTeX files, you can set PAPER=a4 or PAPER=letter
+	echo.  text       to make text files
+	echo.  man        to make manual pages
+	echo.  changes    to make an overview over all changed/added/deprecated items
+	echo.  linkcheck  to check all external links for integrity
+	echo.  doctest    to run all doctests embedded in the documentation if enabled
+	goto end
+)
+
+if "%1" == "clean" (
+	for /d %%i in (%BUILDDIR%\*) do rmdir /q /s %%i
+	del /q /s %BUILDDIR%\*
+	goto end
+)
+
+if "%1" == "html" (
+	%SPHINXBUILD% -b html %ALLSPHINXOPTS% %BUILDDIR%/html
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished. The HTML pages are in %BUILDDIR%/html.
+	goto end
+)
+
+if "%1" == "dirhtml" (
+	%SPHINXBUILD% -b dirhtml %ALLSPHINXOPTS% %BUILDDIR%/dirhtml
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished. The HTML pages are in %BUILDDIR%/dirhtml.
+	goto end
+)
+
+if "%1" == "singlehtml" (
+	%SPHINXBUILD% -b singlehtml %ALLSPHINXOPTS% %BUILDDIR%/singlehtml
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished. The HTML pages are in %BUILDDIR%/singlehtml.
+	goto end
+)
+
+if "%1" == "pickle" (
+	%SPHINXBUILD% -b pickle %ALLSPHINXOPTS% %BUILDDIR%/pickle
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished; now you can process the pickle files.
+	goto end
+)
+
+if "%1" == "json" (
+	%SPHINXBUILD% -b json %ALLSPHINXOPTS% %BUILDDIR%/json
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished; now you can process the JSON files.
+	goto end
+)
+
+if "%1" == "htmlhelp" (
+	%SPHINXBUILD% -b htmlhelp %ALLSPHINXOPTS% %BUILDDIR%/htmlhelp
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished; now you can run HTML Help Workshop with the ^
+.hhp project file in %BUILDDIR%/htmlhelp.
+	goto end
+)
+
+if "%1" == "qthelp" (
+	%SPHINXBUILD% -b qthelp %ALLSPHINXOPTS% %BUILDDIR%/qthelp
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished; now you can run "qcollectiongenerator" with the ^
+.qhcp project file in %BUILDDIR%/qthelp, like this:
+	echo.^> qcollectiongenerator %BUILDDIR%\qthelp\django-compressor.qhcp
+	echo.To view the help file:
+	echo.^> assistant -collectionFile %BUILDDIR%\qthelp\django-compressor.ghc
+	goto end
+)
+
+if "%1" == "devhelp" (
+	%SPHINXBUILD% -b devhelp %ALLSPHINXOPTS% %BUILDDIR%/devhelp
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished.
+	goto end
+)
+
+if "%1" == "epub" (
+	%SPHINXBUILD% -b epub %ALLSPHINXOPTS% %BUILDDIR%/epub
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished. The epub file is in %BUILDDIR%/epub.
+	goto end
+)
+
+if "%1" == "latex" (
+	%SPHINXBUILD% -b latex %ALLSPHINXOPTS% %BUILDDIR%/latex
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished; the LaTeX files are in %BUILDDIR%/latex.
+	goto end
+)
+
+if "%1" == "text" (
+	%SPHINXBUILD% -b text %ALLSPHINXOPTS% %BUILDDIR%/text
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished. The text files are in %BUILDDIR%/text.
+	goto end
+)
+
+if "%1" == "man" (
+	%SPHINXBUILD% -b man %ALLSPHINXOPTS% %BUILDDIR%/man
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished. The manual pages are in %BUILDDIR%/man.
+	goto end
+)
+
+if "%1" == "changes" (
+	%SPHINXBUILD% -b changes %ALLSPHINXOPTS% %BUILDDIR%/changes
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.The overview file is in %BUILDDIR%/changes.
+	goto end
+)
+
+if "%1" == "linkcheck" (
+	%SPHINXBUILD% -b linkcheck %ALLSPHINXOPTS% %BUILDDIR%/linkcheck
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Link check complete; look for any errors in the above output ^
+or in %BUILDDIR%/linkcheck/output.txt.
+	goto end
+)
+
+if "%1" == "doctest" (
+	%SPHINXBUILD% -b doctest %ALLSPHINXOPTS% %BUILDDIR%/doctest
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Testing of doctests in the sources finished, look at the ^
+results in %BUILDDIR%/doctest/output.txt.
+	goto end
+)
+
+:end
diff --git a/testing/mozharness/external_tools/virtualenv/docs/reference.rst b/testing/mozharness/external_tools/virtualenv/docs/reference.rst
new file mode 100644
index 000000000..9249473c9
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/docs/reference.rst
@@ -0,0 +1,261 @@
+Reference Guide
+===============
+
+``virtualenv`` Command
+----------------------
+
+.. _usage:
+
+Usage
+~~~~~
+
+:command:`virtualenv [OPTIONS] ENV_DIR`
+
+    Where ``ENV_DIR`` is an absolute or relative path to a directory to create
+    the virtual environment in.
+
+.. _options:
+
+Options
+~~~~~~~
+
+.. program: virtualenv
+
+.. option:: --version
+
+   show program's version number and exit
+
+.. option:: -h, --help
+
+   show this help message and exit
+
+.. option:: -v, --verbose
+
+   Increase verbosity.
+
+.. option:: -q, --quiet
+
+   Decrease verbosity.
+
+.. option:: -p PYTHON_EXE, --python=PYTHON_EXE
+
+   The Python interpreter to use, e.g.,
+   --python=python2.5 will use the python2.5 interpreter
+   to create the new environment.  The default is the
+   interpreter that virtualenv was installed with
+   (like ``/usr/bin/python``)
+
+.. option:: --clear
+
+   Clear out the non-root install and start from scratch.
+
+.. option:: --system-site-packages
+
+   Give the virtual environment access to the global
+   site-packages.
+
+.. option:: --always-copy
+
+   Always copy files rather than symlinking.
+
+.. option:: --relocatable
+
+   Make an EXISTING virtualenv environment relocatable.
+   This fixes up scripts and makes all .pth files relative.
+
+.. option:: --unzip-setuptools
+
+   Unzip Setuptools when installing it.
+
+.. option:: --no-setuptools
+
+   Do not install setuptools in the new virtualenv.
+
+.. option:: --no-pip
+
+   Do not install pip in the new virtualenv.
+
+.. option:: --no-wheel
+
+   Do not install wheel in the new virtualenv.
+
+.. option:: --extra-search-dir=DIR
+
+   Directory to look for setuptools/pip distributions in.
+   This option can be specified multiple times.
+
+.. option:: --prompt=PROMPT
+
+   Provides an alternative prompt prefix for this
+   environment.
+
+.. option:: --download
+
+   Download preinstalled packages from PyPI.
+
+.. option:: --no-download
+
+   Do not download preinstalled packages from PyPI.
+
+.. option:: --no-site-packages
+
+   DEPRECATED. Retained only for backward compatibility.
+   Not having access to global site-packages is now the
+   default behavior.
+
+.. option:: --distribute
+.. option:: --setuptools
+
+   Legacy; now have no effect.  Before version 1.10 these could be used
+   to choose whether to install Distribute_ or Setuptools_ into the created
+   virtualenv. Distribute has now been merged into Setuptools, and the
+   latter is always installed.
+
+.. _Distribute: https://pypi.python.org/pypi/distribute
+.. _Setuptools: https://pypi.python.org/pypi/setuptools
+
+
+Configuration
+-------------
+
+Environment Variables
+~~~~~~~~~~~~~~~~~~~~~
+
+Each command line option is automatically used to look for environment
+variables with the name format ``VIRTUALENV_<UPPER_NAME>``. That means
+the name of the command line options are capitalized and have dashes
+(``'-'``) replaced with underscores (``'_'``).
+
+For example, to automatically use a custom Python binary instead of the
+one virtualenv is run with you can also set an environment variable::
+
+  $ export VIRTUALENV_PYTHON=/opt/python-3.3/bin/python
+  $ virtualenv ENV
+
+It's the same as passing the option to virtualenv directly::
+
+  $ virtualenv --python=/opt/python-3.3/bin/python ENV
+
+This also works for appending command line options, like ``--find-links``.
+Just leave an empty space between the passed values, e.g.::
+
+  $ export VIRTUALENV_EXTRA_SEARCH_DIR="/path/to/dists /path/to/other/dists"
+  $ virtualenv ENV
+
+is the same as calling::
+
+  $ virtualenv --extra-search-dir=/path/to/dists --extra-search-dir=/path/to/other/dists ENV
+
+.. envvar:: VIRTUAL_ENV_DISABLE_PROMPT
+
+   Any virtualenv created when this is set to a non-empty value will not have
+   it's :ref:`activate` modify the shell prompt.
+
+
+Configuration File
+~~~~~~~~~~~~~~~~~~
+
+virtualenv also looks for a standard ini config file. On Unix and Mac OS X
+that's ``$HOME/.virtualenv/virtualenv.ini`` and on Windows, it's
+``%APPDATA%\virtualenv\virtualenv.ini``.
+
+The names of the settings are derived from the long command line option,
+e.g. the option :option:`--python <-p>` would look like this::
+
+  [virtualenv]
+  python = /opt/python-3.3/bin/python
+
+Appending options like :option:`--extra-search-dir` can be written on multiple
+lines::
+
+  [virtualenv]
+  extra-search-dir =
+      /path/to/dists
+      /path/to/other/dists
+
+Please have a look at the output of :option:`--help <-h>` for a full list
+of supported options.
+
+
+Extending Virtualenv
+--------------------
+
+
+Creating Your Own Bootstrap Scripts
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+While this creates an environment, it doesn't put anything into the
+environment. Developers may find it useful to distribute a script
+that sets up a particular environment, for example a script that
+installs a particular web application.
+
+To create a script like this, call
+:py:func:`virtualenv.create_bootstrap_script`, and write the
+result to your new bootstrapping script.
+
+.. py:function:: create_bootstrap_script(extra_text)
+
+   Creates a bootstrap script from ``extra_text``, which is like
+   this script but with extend_parser, adjust_options, and after_install hooks.
+
+This returns a string that (written to disk of course) can be used
+as a bootstrap script with your own customizations. The script
+will be the standard virtualenv.py script, with your extra text
+added (your extra text should be Python code).
+
+If you include these functions, they will be called:
+
+.. py:function:: extend_parser(optparse_parser)
+
+   You can add or remove options from the parser here.
+
+.. py:function:: adjust_options(options, args)
+
+   You can change options here, or change the args (if you accept
+   different kinds of arguments, be sure you modify ``args`` so it is
+   only ``[DEST_DIR]``).
+
+.. py:function:: after_install(options, home_dir)
+
+   After everything is installed, this function is called. This
+   is probably the function you are most likely to use. An
+   example would be::
+
+       def after_install(options, home_dir):
+           if sys.platform == 'win32':
+               bin = 'Scripts'
+           else:
+               bin = 'bin'
+           subprocess.call([join(home_dir, bin, 'easy_install'),
+                            'MyPackage'])
+           subprocess.call([join(home_dir, bin, 'my-package-script'),
+                            'setup', home_dir])
+
+   This example immediately installs a package, and runs a setup
+   script from that package.
+
+Bootstrap Example
+~~~~~~~~~~~~~~~~~
+
+Here's a more concrete example of how you could use this::
+
+    import virtualenv, textwrap
+    output = virtualenv.create_bootstrap_script(textwrap.dedent("""
+    import os, subprocess
+    def after_install(options, home_dir):
+        etc = join(home_dir, 'etc')
+        if not os.path.exists(etc):
+            os.makedirs(etc)
+        subprocess.call([join(home_dir, 'bin', 'easy_install'),
+                         'BlogApplication'])
+        subprocess.call([join(home_dir, 'bin', 'paster'),
+                         'make-config', 'BlogApplication',
+                         join(etc, 'blog.ini')])
+        subprocess.call([join(home_dir, 'bin', 'paster'),
+                         'setup-app', join(etc, 'blog.ini')])
+    """))
+    f = open('blog-bootstrap.py', 'w').write(output)
+
+Another example is available `here`__.
+
+.. __: https://github.com/socialplanning/fassembler/blob/master/fassembler/create-venv-script.py
diff --git a/testing/mozharness/external_tools/virtualenv/docs/userguide.rst b/testing/mozharness/external_tools/virtualenv/docs/userguide.rst
new file mode 100644
index 000000000..35f0dc950
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/docs/userguide.rst
@@ -0,0 +1,258 @@
+User Guide
+==========
+
+
+Usage
+-----
+
+Virtualenv has one basic command::
+
+    $ virtualenv ENV
+
+Where ``ENV`` is a directory to place the new virtual environment. It has
+a number of usual effects (modifiable by many :ref:`options`):
+
+ - :file:`ENV/lib/` and :file:`ENV/include/` are created, containing supporting
+   library files for a new virtualenv python. Packages installed in this
+   environment will live under :file:`ENV/lib/pythonX.X/site-packages/`.
+
+ - :file:`ENV/bin` is created, where executables live - noticeably a new
+   :command:`python`. Thus running a script with ``#! /path/to/ENV/bin/python``
+   would run that script under this virtualenv's python.
+
+ - The crucial packages pip_ and setuptools_ are installed, which allow other
+   packages to be easily installed to the environment. This associated pip
+   can be run from :file:`ENV/bin/pip`.
+
+The python in your new virtualenv is effectively isolated from the python that
+was used to create it.
+
+.. _pip: https://pypi.python.org/pypi/pip
+.. _setuptools: https://pypi.python.org/pypi/setuptools
+
+
+.. _activate:
+
+activate script
+~~~~~~~~~~~~~~~
+
+In a newly created virtualenv there will also be a :command:`activate` shell
+script. For Windows systems, activation scripts are provided for
+the Command Prompt and Powershell.
+
+On Posix systems, this resides in :file:`/ENV/bin/`, so you can run::
+
+    $ source bin/activate
+
+For some shells (e.g. the original Bourne Shell) you may need to use the
+:command:`.` command, when :command:`source` does not exist. There are also
+separate activate files for some other shells, like csh and fish.
+:file:`bin/activate` should work for bash/zsh/dash.
+
+This will change your ``$PATH`` so its first entry is the virtualenv's
+``bin/`` directory. (You have to use ``source`` because it changes your
+shell environment in-place.) This is all it does; it's purely a
+convenience. If you directly run a script or the python interpreter
+from the virtualenv's ``bin/`` directory (e.g. ``path/to/ENV/bin/pip``
+or ``/path/to/ENV/bin/python-script.py``) there's no need for
+activation.
+
+The ``activate`` script will also modify your shell prompt to indicate
+which environment is currently active. To disable this behaviour, see
+:envvar:`VIRTUAL_ENV_DISABLE_PROMPT`.
+
+To undo these changes to your path (and prompt), just run::
+
+    $ deactivate
+
+On Windows, the equivalent `activate` script is in the ``Scripts`` folder::
+
+    > \path\to\env\Scripts\activate
+
+And type ``deactivate`` to undo the changes.
+
+Based on your active shell (CMD.exe or Powershell.exe), Windows will use
+either activate.bat or activate.ps1 (as appropriate) to activate the
+virtual environment. If using Powershell, see the notes about code signing
+below.
+
+.. note::
+
+    If using Powershell, the ``activate`` script is subject to the
+    `execution policies`_ on the system. By default on Windows 7, the system's
+    excution policy is set to ``Restricted``, meaning no scripts like the
+    ``activate`` script are allowed to be executed. But that can't stop us
+    from changing that slightly to allow it to be executed.
+
+    In order to use the script, you can relax your system's execution
+    policy to ``AllSigned``, meaning all scripts on the system must be
+    digitally signed to be executed. Since the virtualenv activation
+    script is signed by one of the authors (Jannis Leidel) this level of
+    the execution policy suffices. As an administrator run::
+
+        PS C:\> Set-ExecutionPolicy AllSigned
+
+    Then you'll be asked to trust the signer, when executing the script.
+    You will be prompted with the following::
+
+        PS C:\> virtualenv .\foo
+        New python executable in C:\foo\Scripts\python.exe
+        Installing setuptools................done.
+        Installing pip...................done.
+        PS C:\> .\foo\scripts\activate
+
+        Do you want to run software from this untrusted publisher?
+        File C:\foo\scripts\activate.ps1 is published by E=jannis@leidel.info,
+        CN=Jannis Leidel, L=Berlin, S=Berlin, C=DE, Description=581796-Gh7xfJxkxQSIO4E0
+        and is not trusted on your system. Only run scripts from trusted publishers.
+        [V] Never run  [D] Do not run  [R] Run once  [A] Always run  [?] Help
+        (default is "D"):A
+        (foo) PS C:\>
+
+    If you select ``[A] Always Run``, the certificate will be added to the
+    Trusted Publishers of your user account, and will be trusted in this
+    user's context henceforth. If you select ``[R] Run Once``, the script will
+    be run, but you will be prometed on a subsequent invocation. Advanced users
+    can add the signer's certificate to the Trusted Publishers of the Computer
+    account to apply to all users (though this technique is out of scope of this
+    document).
+
+    Alternatively, you may relax the system execution policy to allow running
+    of local scripts without verifying the code signature using the following::
+
+        PS C:\> Set-ExecutionPolicy RemoteSigned
+
+    Since the ``activate.ps1`` script is generated locally for each virtualenv,
+    it is not considered a remote script and can then be executed.
+
+.. _`execution policies`: http://technet.microsoft.com/en-us/library/dd347641.aspx
+
+Removing an Environment
+~~~~~~~~~~~~~~~~~~~~~~~
+
+Removing a virtual environment is simply done by deactivating it and deleting the
+environment folder with all its contents::
+
+    (ENV)$ deactivate
+    $ rm -r /path/to/ENV
+
+The :option:`--system-site-packages` Option
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+If you build with ``virtualenv --system-site-packages ENV``, your virtual
+environment will inherit packages from ``/usr/lib/python2.7/site-packages``
+(or wherever your global site-packages directory is).
+
+This can be used if you have control over the global site-packages directory,
+and you want to depend on the packages there. If you want isolation from the
+global system, do not use this flag.
+
+Windows Notes
+~~~~~~~~~~~~~
+
+Some paths within the virtualenv are slightly different on Windows: scripts and
+executables on Windows go in ``ENV\Scripts\`` instead of ``ENV/bin/`` and
+libraries go in ``ENV\Lib\`` rather than ``ENV/lib/``.
+
+To create a virtualenv under a path with spaces in it on Windows, you'll need
+the `win32api <http://sourceforge.net/projects/pywin32/>`_ library installed.
+
+
+Using Virtualenv without ``bin/python``
+---------------------------------------
+
+Sometimes you can't or don't want to use the Python interpreter
+created by the virtualenv. For instance, in a `mod_python
+<http://www.modpython.org/>`_ or `mod_wsgi <http://www.modwsgi.org/>`_
+environment, there is only one interpreter.
+
+Luckily, it's easy. You must use the custom Python interpreter to
+*install* libraries. But to *use* libraries, you just have to be sure
+the path is correct. A script is available to correct the path. You
+can setup the environment like::
+
+    activate_this = '/path/to/env/bin/activate_this.py'
+    execfile(activate_this, dict(__file__=activate_this))
+
+This will change ``sys.path`` and even change ``sys.prefix``, but also allow
+you to use an existing interpreter. Items in your environment will show up
+first on ``sys.path``, before global items. However, global items will
+always be accessible (as if the :option:`--system-site-packages` flag had been
+used in creating the environment, whether it was or not). Also, this cannot undo
+the activation of other environments, or modules that have been imported.
+You shouldn't try to, for instance, activate an environment before a web
+request; you should activate *one* environment as early as possible, and not
+do it again in that process.
+
+Making Environments Relocatable
+-------------------------------
+
+**Note:** this option is somewhat experimental, and there are probably
+caveats that have not yet been identified.
+
+.. warning::
+
+    The ``--relocatable`` option currently has a number of issues,
+    and is not guaranteed to work in all circumstances. It is possible
+    that the option will be deprecated in a future version of ``virtualenv``.
+
+Normally environments are tied to a specific path. That means that
+you cannot move an environment around or copy it to another computer.
+You can fix up an environment to make it relocatable with the
+command::
+
+    $ virtualenv --relocatable ENV
+
+This will make some of the files created by setuptools use relative paths,
+and will change all the scripts to use ``activate_this.py`` instead of using
+the location of the Python interpreter to select the environment.
+
+**Note:** scripts which have been made relocatable will only work if
+the virtualenv is activated, specifically the python executable from
+the virtualenv must be the first one on the system PATH. Also note that
+the activate scripts are not currently made relocatable by
+``virtualenv --relocatable``.
+
+**Note:** you must run this after you've installed *any* packages into
+the environment. If you make an environment relocatable, then
+install a new package, you must run ``virtualenv --relocatable``
+again.
+
+Also, this **does not make your packages cross-platform**. You can
+move the directory around, but it can only be used on other similar
+computers. Some known environmental differences that can cause
+incompatibilities: a different version of Python, when one platform
+uses UCS2 for its internal unicode representation and another uses
+UCS4 (a compile-time option), obvious platform changes like Windows
+vs. Linux, or Intel vs. ARM, and if you have libraries that bind to C
+libraries on the system, if those C libraries are located somewhere
+different (either different versions, or a different filesystem
+layout).
+
+If you use this flag to create an environment, currently, the
+:option:`--system-site-packages` option will be implied.
+
+The :option:`--extra-search-dir` option
+---------------------------------------
+
+This option allows you to provide your own versions of setuptools and/or
+pip to use instead of the embedded versions that come with virtualenv.
+
+To use this feature, pass one or more ``--extra-search-dir`` options to
+virtualenv like this::
+
+    $ virtualenv --extra-search-dir=/path/to/distributions ENV
+
+The ``/path/to/distributions`` path should point to a directory that contains
+setuptools and/or pip wheels.
+
+virtualenv will look for wheels in the specified directories, but will use
+pip's standard algorithm for selecting the wheel to install, which looks for
+the latest compatible wheel.
+
+As well as the extra directories, the search order includes:
+
+#. The ``virtualenv_support`` directory relative to virtualenv.py
+#. The directory where virtualenv.py is located.
+#. The current directory.
+
diff --git a/testing/mozharness/external_tools/virtualenv/scripts/virtualenv b/testing/mozharness/external_tools/virtualenv/scripts/virtualenv
new file mode 100644
index 000000000..c961dd7db
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/scripts/virtualenv
@@ -0,0 +1,3 @@
+#!/usr/bin/env python
+import virtualenv
+virtualenv.main()
diff --git a/testing/mozharness/external_tools/virtualenv/setup.cfg b/testing/mozharness/external_tools/virtualenv/setup.cfg
new file mode 100644
index 000000000..6662fa569
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/setup.cfg
@@ -0,0 +1,8 @@
+[bdist_wheel]
+universal = 1
+
+[egg_info]
+tag_date = 0
+tag_build = 
+tag_svn_revision = 0
+
diff --git a/testing/mozharness/external_tools/virtualenv/setup.py b/testing/mozharness/external_tools/virtualenv/setup.py
new file mode 100644
index 000000000..ee03bc531
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/setup.py
@@ -0,0 +1,123 @@
+import os
+import re
+import shutil
+import sys
+
+if sys.version_info[:2] < (2, 6):
+    sys.exit('virtualenv requires Python 2.6 or higher.')
+
+try:
+    from setuptools import setup
+    from setuptools.command.test import test as TestCommand
+
+    class PyTest(TestCommand):
+        user_options = [('pytest-args=', 'a', "Arguments to pass to py.test")]
+
+        def initialize_options(self):
+            TestCommand.initialize_options(self)
+            self.pytest_args = []
+
+        def finalize_options(self):
+            TestCommand.finalize_options(self)
+            #self.test_args = []
+            #self.test_suite = True
+
+        def run_tests(self):
+            # import here, because outside the eggs aren't loaded
+            import pytest
+            sys.exit(pytest.main(self.pytest_args))
+
+    setup_params = {
+        'entry_points': {
+            'console_scripts': ['virtualenv=virtualenv:main'],
+        },
+        'zip_safe': False,
+        'cmdclass': {'test': PyTest},
+        'tests_require': ['pytest', 'mock'],
+    }
+except ImportError:
+    from distutils.core import setup
+    if sys.platform == 'win32':
+        print('Note: without Setuptools installed you will '
+              'have to use "python -m virtualenv ENV"')
+        setup_params = {}
+    else:
+        script = 'scripts/virtualenv'
+        setup_params = {'scripts': [script]}
+
+
+def read_file(*paths):
+    here = os.path.dirname(os.path.abspath(__file__))
+    with open(os.path.join(here, *paths)) as f:
+        return f.read()
+
+# Get long_description from index.rst:
+long_description = read_file('docs', 'index.rst')
+long_description = long_description.strip().split('split here', 1)[0]
+# Add release history
+changes = read_file('docs', 'changes.rst')
+# Only report last two releases for brevity
+releases_found = 0
+change_lines = []
+for line in changes.splitlines():
+    change_lines.append(line)
+    if line.startswith('--------------'):
+        releases_found += 1
+    if releases_found > 2:
+        break
+
+changes = '\n'.join(change_lines[:-2]) + '\n'
+changes += '`Full Changelog <https://virtualenv.pypa.io/en/latest/changes.html>`_.'
+# Replace issue/pull directives
+changes = re.sub(r':pull:`(\d+)`', r'PR #\1', changes)
+changes = re.sub(r':issue:`(\d+)`', r'#\1', changes)
+
+long_description += '\n\n' + changes
+
+
+def get_version():
+    version_file = read_file('virtualenv.py')
+    version_match = re.search(r"^__version__ = ['\"]([^'\"]*)['\"]",
+                              version_file, re.M)
+    if version_match:
+        return version_match.group(1)
+    raise RuntimeError("Unable to find version string.")
+
+
+# Hack to prevent stupid TypeError: 'NoneType' object is not callable error on
+# exit of python setup.py test # in multiprocessing/util.py _exit_function when
+# running python setup.py test (see
+# http://www.eby-sarna.com/pipermail/peak/2010-May/003357.html)
+try:
+    import multiprocessing  # noqa
+except ImportError:
+    pass
+
+setup(
+    name='virtualenv',
+    version=get_version(),
+    description="Virtual Python Environment builder",
+    long_description=long_description,
+    classifiers=[
+        'Development Status :: 5 - Production/Stable',
+        'Intended Audience :: Developers',
+        'License :: OSI Approved :: MIT License',
+        'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 2.6',
+        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.3',
+        'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: 3.5',
+    ],
+    keywords='setuptools deployment installation distutils',
+    author='Ian Bicking',
+    author_email='ianb@colorstudy.com',
+    maintainer='Jannis Leidel, Carl Meyer and Brian Rosner',
+    maintainer_email='python-virtualenv@groups.google.com',
+    url='https://virtualenv.pypa.io/',
+    license='MIT',
+    py_modules=['virtualenv'],
+    packages=['virtualenv_support'],
+    package_data={'virtualenv_support': ['*.whl']},
+    **setup_params)
diff --git a/testing/mozharness/external_tools/virtualenv/site.py b/testing/mozharness/external_tools/virtualenv/site.py
new file mode 100644
index 000000000..4e426cdb6
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/site.py
@@ -0,0 +1,760 @@
+"""Append module search paths for third-party packages to sys.path.
+
+****************************************************************
+* This module is automatically imported during initialization. *
+****************************************************************
+
+In earlier versions of Python (up to 1.5a3), scripts or modules that
+needed to use site-specific modules would place ``import site''
+somewhere near the top of their code.  Because of the automatic
+import, this is no longer necessary (but code that does it still
+works).
+
+This will append site-specific paths to the module search path.  On
+Unix, it starts with sys.prefix and sys.exec_prefix (if different) and
+appends lib/python<version>/site-packages as well as lib/site-python.
+It also supports the Debian convention of
+lib/python<version>/dist-packages.  On other platforms (mainly Mac and
+Windows), it uses just sys.prefix (and sys.exec_prefix, if different,
+but this is unlikely).  The resulting directories, if they exist, are
+appended to sys.path, and also inspected for path configuration files.
+
+FOR DEBIAN, this sys.path is augmented with directories in /usr/local.
+Local addons go into /usr/local/lib/python<version>/site-packages
+(resp. /usr/local/lib/site-python), Debian addons install into
+/usr/{lib,share}/python<version>/dist-packages.
+
+A path configuration file is a file whose name has the form
+<package>.pth; its contents are additional directories (one per line)
+to be added to sys.path.  Non-existing directories (or
+non-directories) are never added to sys.path; no directory is added to
+sys.path more than once.  Blank lines and lines beginning with
+'#' are skipped. Lines starting with 'import' are executed.
+
+For example, suppose sys.prefix and sys.exec_prefix are set to
+/usr/local and there is a directory /usr/local/lib/python2.X/site-packages
+with three subdirectories, foo, bar and spam, and two path
+configuration files, foo.pth and bar.pth.  Assume foo.pth contains the
+following:
+
+  # foo package configuration
+  foo
+  bar
+  bletch
+
+and bar.pth contains:
+
+  # bar package configuration
+  bar
+
+Then the following directories are added to sys.path, in this order:
+
+  /usr/local/lib/python2.X/site-packages/bar
+  /usr/local/lib/python2.X/site-packages/foo
+
+Note that bletch is omitted because it doesn't exist; bar precedes foo
+because bar.pth comes alphabetically before foo.pth; and spam is
+omitted because it is not mentioned in either path configuration file.
+
+After these path manipulations, an attempt is made to import a module
+named sitecustomize, which can perform arbitrary additional
+site-specific customizations.  If this import fails with an
+ImportError exception, it is silently ignored.
+
+"""
+
+import sys
+import os
+
+try:
+    import __builtin__ as builtins
+except ImportError:
+    import builtins
+try:
+    set
+except NameError:
+    from sets import Set as set
+
+# Prefixes for site-packages; add additional prefixes like /usr/local here
+PREFIXES = [sys.prefix, sys.exec_prefix]
+# Enable per user site-packages directory
+# set it to False to disable the feature or True to force the feature
+ENABLE_USER_SITE = None
+# for distutils.commands.install
+USER_SITE = None
+USER_BASE = None
+
+_is_64bit = (getattr(sys, 'maxsize', None) or getattr(sys, 'maxint')) > 2**32
+_is_pypy = hasattr(sys, 'pypy_version_info')
+_is_jython = sys.platform[:4] == 'java'
+if _is_jython:
+    ModuleType = type(os)
+
+def makepath(*paths):
+    dir = os.path.join(*paths)
+    if _is_jython and (dir == '__classpath__' or
+                       dir.startswith('__pyclasspath__')):
+        return dir, dir
+    dir = os.path.abspath(dir)
+    return dir, os.path.normcase(dir)
+
+def abs__file__():
+    """Set all module' __file__ attribute to an absolute path"""
+    for m in sys.modules.values():
+        if ((_is_jython and not isinstance(m, ModuleType)) or
+            hasattr(m, '__loader__')):
+            # only modules need the abspath in Jython. and don't mess
+            # with a PEP 302-supplied __file__
+            continue
+        f = getattr(m, '__file__', None)
+        if f is None:
+            continue
+        m.__file__ = os.path.abspath(f)
+
+def removeduppaths():
+    """ Remove duplicate entries from sys.path along with making them
+    absolute"""
+    # This ensures that the initial path provided by the interpreter contains
+    # only absolute pathnames, even if we're running from the build directory.
+    L = []
+    known_paths = set()
+    for dir in sys.path:
+        # Filter out duplicate paths (on case-insensitive file systems also
+        # if they only differ in case); turn relative paths into absolute
+        # paths.
+        dir, dircase = makepath(dir)
+        if not dircase in known_paths:
+            L.append(dir)
+            known_paths.add(dircase)
+    sys.path[:] = L
+    return known_paths
+
+# XXX This should not be part of site.py, since it is needed even when
+# using the -S option for Python.  See http://www.python.org/sf/586680
+def addbuilddir():
+    """Append ./build/lib.<platform> in case we're running in the build dir
+    (especially for Guido :-)"""
+    from distutils.util import get_platform
+    s = "build/lib.%s-%.3s" % (get_platform(), sys.version)
+    if hasattr(sys, 'gettotalrefcount'):
+        s += '-pydebug'
+    s = os.path.join(os.path.dirname(sys.path[-1]), s)
+    sys.path.append(s)
+
+def _init_pathinfo():
+    """Return a set containing all existing directory entries from sys.path"""
+    d = set()
+    for dir in sys.path:
+        try:
+            if os.path.isdir(dir):
+                dir, dircase = makepath(dir)
+                d.add(dircase)
+        except TypeError:
+            continue
+    return d
+
+def addpackage(sitedir, name, known_paths):
+    """Add a new path to known_paths by combining sitedir and 'name' or execute
+    sitedir if it starts with 'import'"""
+    if known_paths is None:
+        _init_pathinfo()
+        reset = 1
+    else:
+        reset = 0
+    fullname = os.path.join(sitedir, name)
+    try:
+        f = open(fullname, "rU")
+    except IOError:
+        return
+    try:
+        for line in f:
+            if line.startswith("#"):
+                continue
+            if line.startswith("import"):
+                exec(line)
+                continue
+            line = line.rstrip()
+            dir, dircase = makepath(sitedir, line)
+            if not dircase in known_paths and os.path.exists(dir):
+                sys.path.append(dir)
+                known_paths.add(dircase)
+    finally:
+        f.close()
+    if reset:
+        known_paths = None
+    return known_paths
+
+def addsitedir(sitedir, known_paths=None):
+    """Add 'sitedir' argument to sys.path if missing and handle .pth files in
+    'sitedir'"""
+    if known_paths is None:
+        known_paths = _init_pathinfo()
+        reset = 1
+    else:
+        reset = 0
+    sitedir, sitedircase = makepath(sitedir)
+    if not sitedircase in known_paths:
+        sys.path.append(sitedir)        # Add path component
+    try:
+        names = os.listdir(sitedir)
+    except os.error:
+        return
+    names.sort()
+    for name in names:
+        if name.endswith(os.extsep + "pth"):
+            addpackage(sitedir, name, known_paths)
+    if reset:
+        known_paths = None
+    return known_paths
+
+def addsitepackages(known_paths, sys_prefix=sys.prefix, exec_prefix=sys.exec_prefix):
+    """Add site-packages (and possibly site-python) to sys.path"""
+    prefixes = [os.path.join(sys_prefix, "local"), sys_prefix]
+    if exec_prefix != sys_prefix:
+        prefixes.append(os.path.join(exec_prefix, "local"))
+
+    for prefix in prefixes:
+        if prefix:
+            if sys.platform in ('os2emx', 'riscos') or _is_jython:
+                sitedirs = [os.path.join(prefix, "Lib", "site-packages")]
+            elif _is_pypy:
+                sitedirs = [os.path.join(prefix, 'site-packages')]
+            elif sys.platform == 'darwin' and prefix == sys_prefix:
+
+                if prefix.startswith("/System/Library/Frameworks/"): # Apple's Python
+
+                    sitedirs = [os.path.join("/Library/Python", sys.version[:3], "site-packages"),
+                                os.path.join(prefix, "Extras", "lib", "python")]
+
+                else: # any other Python distros on OSX work this way
+                    sitedirs = [os.path.join(prefix, "lib",
+                                             "python" + sys.version[:3], "site-packages")]
+
+            elif os.sep == '/':
+                sitedirs = [os.path.join(prefix,
+                                         "lib",
+                                         "python" + sys.version[:3],
+                                         "site-packages"),
+                            os.path.join(prefix, "lib", "site-python"),
+                            os.path.join(prefix, "python" + sys.version[:3], "lib-dynload")]
+                lib64_dir = os.path.join(prefix, "lib64", "python" + sys.version[:3], "site-packages")
+                if (os.path.exists(lib64_dir) and
+                    os.path.realpath(lib64_dir) not in [os.path.realpath(p) for p in sitedirs]):
+                    if _is_64bit:
+                        sitedirs.insert(0, lib64_dir)
+                    else:
+                        sitedirs.append(lib64_dir)
+                try:
+                    # sys.getobjects only available in --with-pydebug build
+                    sys.getobjects
+                    sitedirs.insert(0, os.path.join(sitedirs[0], 'debug'))
+                except AttributeError:
+                    pass
+                # Debian-specific dist-packages directories:
+                sitedirs.append(os.path.join(prefix, "local/lib",
+                                             "python" + sys.version[:3],
+                                             "dist-packages"))
+                if sys.version[0] == '2':
+                    sitedirs.append(os.path.join(prefix, "lib",
+                                                 "python" + sys.version[:3],
+                                                 "dist-packages"))
+                else:
+                    sitedirs.append(os.path.join(prefix, "lib",
+                                                 "python" + sys.version[0],
+                                                 "dist-packages"))
+                sitedirs.append(os.path.join(prefix, "lib", "dist-python"))
+            else:
+                sitedirs = [prefix, os.path.join(prefix, "lib", "site-packages")]
+            if sys.platform == 'darwin':
+                # for framework builds *only* we add the standard Apple
+                # locations. Currently only per-user, but /Library and
+                # /Network/Library could be added too
+                if 'Python.framework' in prefix:
+                    home = os.environ.get('HOME')
+                    if home:
+                        sitedirs.append(
+                            os.path.join(home,
+                                         'Library',
+                                         'Python',
+                                         sys.version[:3],
+                                         'site-packages'))
+            for sitedir in sitedirs:
+                if os.path.isdir(sitedir):
+                    addsitedir(sitedir, known_paths)
+    return None
+
+def check_enableusersite():
+    """Check if user site directory is safe for inclusion
+
+    The function tests for the command line flag (including environment var),
+    process uid/gid equal to effective uid/gid.
+
+    None: Disabled for security reasons
+    False: Disabled by user (command line option)
+    True: Safe and enabled
+    """
+    if hasattr(sys, 'flags') and getattr(sys.flags, 'no_user_site', False):
+        return False
+
+    if hasattr(os, "getuid") and hasattr(os, "geteuid"):
+        # check process uid == effective uid
+        if os.geteuid() != os.getuid():
+            return None
+    if hasattr(os, "getgid") and hasattr(os, "getegid"):
+        # check process gid == effective gid
+        if os.getegid() != os.getgid():
+            return None
+
+    return True
+
+def addusersitepackages(known_paths):
+    """Add a per user site-package to sys.path
+
+    Each user has its own python directory with site-packages in the
+    home directory.
+
+    USER_BASE is the root directory for all Python versions
+
+    USER_SITE is the user specific site-packages directory
+
+    USER_SITE/.. can be used for data.
+    """
+    global USER_BASE, USER_SITE, ENABLE_USER_SITE
+    env_base = os.environ.get("PYTHONUSERBASE", None)
+
+    def joinuser(*args):
+        return os.path.expanduser(os.path.join(*args))
+
+    #if sys.platform in ('os2emx', 'riscos'):
+    #    # Don't know what to put here
+    #    USER_BASE = ''
+    #    USER_SITE = ''
+    if os.name == "nt":
+        base = os.environ.get("APPDATA") or "~"
+        if env_base:
+            USER_BASE = env_base
+        else:
+            USER_BASE = joinuser(base, "Python")
+        USER_SITE = os.path.join(USER_BASE,
+                                 "Python" + sys.version[0] + sys.version[2],
+                                 "site-packages")
+    else:
+        if env_base:
+            USER_BASE = env_base
+        else:
+            USER_BASE = joinuser("~", ".local")
+        USER_SITE = os.path.join(USER_BASE, "lib",
+                                 "python" + sys.version[:3],
+                                 "site-packages")
+
+    if ENABLE_USER_SITE and os.path.isdir(USER_SITE):
+        addsitedir(USER_SITE, known_paths)
+    if ENABLE_USER_SITE:
+        for dist_libdir in ("lib", "local/lib"):
+            user_site = os.path.join(USER_BASE, dist_libdir,
+                                     "python" + sys.version[:3],
+                                     "dist-packages")
+            if os.path.isdir(user_site):
+                addsitedir(user_site, known_paths)
+    return known_paths
+
+
+
+def setBEGINLIBPATH():
+    """The OS/2 EMX port has optional extension modules that do double duty
+    as DLLs (and must use the .DLL file extension) for other extensions.
+    The library search path needs to be amended so these will be found
+    during module import.  Use BEGINLIBPATH so that these are at the start
+    of the library search path.
+
+    """
+    dllpath = os.path.join(sys.prefix, "Lib", "lib-dynload")
+    libpath = os.environ['BEGINLIBPATH'].split(';')
+    if libpath[-1]:
+        libpath.append(dllpath)
+    else:
+        libpath[-1] = dllpath
+    os.environ['BEGINLIBPATH'] = ';'.join(libpath)
+
+
+def setquit():
+    """Define new built-ins 'quit' and 'exit'.
+    These are simply strings that display a hint on how to exit.
+
+    """
+    if os.sep == ':':
+        eof = 'Cmd-Q'
+    elif os.sep == '\\':
+        eof = 'Ctrl-Z plus Return'
+    else:
+        eof = 'Ctrl-D (i.e. EOF)'
+
+    class Quitter(object):
+        def __init__(self, name):
+            self.name = name
+        def __repr__(self):
+            return 'Use %s() or %s to exit' % (self.name, eof)
+        def __call__(self, code=None):
+            # Shells like IDLE catch the SystemExit, but listen when their
+            # stdin wrapper is closed.
+            try:
+                sys.stdin.close()
+            except:
+                pass
+            raise SystemExit(code)
+    builtins.quit = Quitter('quit')
+    builtins.exit = Quitter('exit')
+
+
+class _Printer(object):
+    """interactive prompt objects for printing the license text, a list of
+    contributors and the copyright notice."""
+
+    MAXLINES = 23
+
+    def __init__(self, name, data, files=(), dirs=()):
+        self.__name = name
+        self.__data = data
+        self.__files = files
+        self.__dirs = dirs
+        self.__lines = None
+
+    def __setup(self):
+        if self.__lines:
+            return
+        data = None
+        for dir in self.__dirs:
+            for filename in self.__files:
+                filename = os.path.join(dir, filename)
+                try:
+                    fp = open(filename, "rU")
+                    data = fp.read()
+                    fp.close()
+                    break
+                except IOError:
+                    pass
+            if data:
+                break
+        if not data:
+            data = self.__data
+        self.__lines = data.split('\n')
+        self.__linecnt = len(self.__lines)
+
+    def __repr__(self):
+        self.__setup()
+        if len(self.__lines) <= self.MAXLINES:
+            return "\n".join(self.__lines)
+        else:
+            return "Type %s() to see the full %s text" % ((self.__name,)*2)
+
+    def __call__(self):
+        self.__setup()
+        prompt = 'Hit Return for more, or q (and Return) to quit: '
+        lineno = 0
+        while 1:
+            try:
+                for i in range(lineno, lineno + self.MAXLINES):
+                    print(self.__lines[i])
+            except IndexError:
+                break
+            else:
+                lineno += self.MAXLINES
+                key = None
+                while key is None:
+                    try:
+                        key = raw_input(prompt)
+                    except NameError:
+                        key = input(prompt)
+                    if key not in ('', 'q'):
+                        key = None
+                if key == 'q':
+                    break
+
+def setcopyright():
+    """Set 'copyright' and 'credits' in __builtin__"""
+    builtins.copyright = _Printer("copyright", sys.copyright)
+    if _is_jython:
+        builtins.credits = _Printer(
+            "credits",
+            "Jython is maintained by the Jython developers (www.jython.org).")
+    elif _is_pypy:
+        builtins.credits = _Printer(
+            "credits",
+            "PyPy is maintained by the PyPy developers: http://pypy.org/")
+    else:
+        builtins.credits = _Printer("credits", """\
+    Thanks to CWI, CNRI, BeOpen.com, Zope Corporation and a cast of thousands
+    for supporting Python development.  See www.python.org for more information.""")
+    here = os.path.dirname(os.__file__)
+    builtins.license = _Printer(
+        "license", "See http://www.python.org/%.3s/license.html" % sys.version,
+        ["LICENSE.txt", "LICENSE"],
+        [os.path.join(here, os.pardir), here, os.curdir])
+
+
+class _Helper(object):
+    """Define the built-in 'help'.
+    This is a wrapper around pydoc.help (with a twist).
+
+    """
+
+    def __repr__(self):
+        return "Type help() for interactive help, " \
+               "or help(object) for help about object."
+    def __call__(self, *args, **kwds):
+        import pydoc
+        return pydoc.help(*args, **kwds)
+
+def sethelper():
+    builtins.help = _Helper()
+
+def aliasmbcs():
+    """On Windows, some default encodings are not provided by Python,
+    while they are always available as "mbcs" in each locale. Make
+    them usable by aliasing to "mbcs" in such a case."""
+    if sys.platform == 'win32':
+        import locale, codecs
+        enc = locale.getdefaultlocale()[1]
+        if enc.startswith('cp'):            # "cp***" ?
+            try:
+                codecs.lookup(enc)
+            except LookupError:
+                import encodings
+                encodings._cache[enc] = encodings._unknown
+                encodings.aliases.aliases[enc] = 'mbcs'
+
+def setencoding():
+    """Set the string encoding used by the Unicode implementation.  The
+    default is 'ascii', but if you're willing to experiment, you can
+    change this."""
+    encoding = "ascii" # Default value set by _PyUnicode_Init()
+    if 0:
+        # Enable to support locale aware default string encodings.
+        import locale
+        loc = locale.getdefaultlocale()
+        if loc[1]:
+            encoding = loc[1]
+    if 0:
+        # Enable to switch off string to Unicode coercion and implicit
+        # Unicode to string conversion.
+        encoding = "undefined"
+    if encoding != "ascii":
+        # On Non-Unicode builds this will raise an AttributeError...
+        sys.setdefaultencoding(encoding) # Needs Python Unicode build !
+
+
+def execsitecustomize():
+    """Run custom site specific code, if available."""
+    try:
+        import sitecustomize
+    except ImportError:
+        pass
+
+def virtual_install_main_packages():
+    f = open(os.path.join(os.path.dirname(__file__), 'orig-prefix.txt'))
+    sys.real_prefix = f.read().strip()
+    f.close()
+    pos = 2
+    hardcoded_relative_dirs = []
+    if sys.path[0] == '':
+        pos += 1
+    if _is_jython:
+        paths = [os.path.join(sys.real_prefix, 'Lib')]
+    elif _is_pypy:
+        if sys.version_info > (3, 2):
+            cpyver = '%d' % sys.version_info[0]
+        elif sys.pypy_version_info >= (1, 5):
+            cpyver = '%d.%d' % sys.version_info[:2]
+        else:
+            cpyver = '%d.%d.%d' % sys.version_info[:3]
+        paths = [os.path.join(sys.real_prefix, 'lib_pypy'),
+                 os.path.join(sys.real_prefix, 'lib-python', cpyver)]
+        if sys.pypy_version_info < (1, 9):
+            paths.insert(1, os.path.join(sys.real_prefix,
+                                         'lib-python', 'modified-%s' % cpyver))
+        hardcoded_relative_dirs = paths[:] # for the special 'darwin' case below
+        #
+        # This is hardcoded in the Python executable, but relative to sys.prefix:
+        for path in paths[:]:
+            plat_path = os.path.join(path, 'plat-%s' % sys.platform)
+            if os.path.exists(plat_path):
+                paths.append(plat_path)
+    # MOZ: The MSYS2 and MinGW versions of Python have their main packages in the UNIX directory this checks specifically for the native win32 python
+    elif sys.platform == 'win32' and os.sep == '\\':
+        paths = [os.path.join(sys.real_prefix, 'Lib'), os.path.join(sys.real_prefix, 'DLLs')]
+    else:
+        paths = [os.path.join(sys.real_prefix, 'lib', 'python'+sys.version[:3])]
+        hardcoded_relative_dirs = paths[:] # for the special 'darwin' case below
+        lib64_path = os.path.join(sys.real_prefix, 'lib64', 'python'+sys.version[:3])
+        if os.path.exists(lib64_path):
+            if _is_64bit:
+                paths.insert(0, lib64_path)
+            else:
+                paths.append(lib64_path)
+        # This is hardcoded in the Python executable, but relative to
+        # sys.prefix.  Debian change: we need to add the multiarch triplet
+        # here, which is where the real stuff lives.  As per PEP 421, in
+        # Python 3.3+, this lives in sys.implementation, while in Python 2.7
+        # it lives in sys.
+        try:
+            arch = getattr(sys, 'implementation', sys)._multiarch
+        except AttributeError:
+            # This is a non-multiarch aware Python.  Fallback to the old way.
+            arch = sys.platform
+        plat_path = os.path.join(sys.real_prefix, 'lib',
+                                 'python'+sys.version[:3],
+                                 'plat-%s' % arch)
+        if os.path.exists(plat_path):
+            paths.append(plat_path)
+    # This is hardcoded in the Python executable, but
+    # relative to sys.prefix, so we have to fix up:
+    for path in list(paths):
+        tk_dir = os.path.join(path, 'lib-tk')
+        if os.path.exists(tk_dir):
+            paths.append(tk_dir)
+
+    # These are hardcoded in the Apple's Python executable,
+    # but relative to sys.prefix, so we have to fix them up:
+    if sys.platform == 'darwin':
+        hardcoded_paths = [os.path.join(relative_dir, module)
+                           for relative_dir in hardcoded_relative_dirs
+                           for module in ('plat-darwin', 'plat-mac', 'plat-mac/lib-scriptpackages')]
+
+        for path in hardcoded_paths:
+            if os.path.exists(path):
+                paths.append(path)
+
+    sys.path.extend(paths)
+
+def force_global_eggs_after_local_site_packages():
+    """
+    Force easy_installed eggs in the global environment to get placed
+    in sys.path after all packages inside the virtualenv.  This
+    maintains the "least surprise" result that packages in the
+    virtualenv always mask global packages, never the other way
+    around.
+
+    """
+    egginsert = getattr(sys, '__egginsert', 0)
+    for i, path in enumerate(sys.path):
+        if i > egginsert and path.startswith(sys.prefix):
+            egginsert = i
+    sys.__egginsert = egginsert + 1
+
+def virtual_addsitepackages(known_paths):
+    force_global_eggs_after_local_site_packages()
+    return addsitepackages(known_paths, sys_prefix=sys.real_prefix)
+
+def fixclasspath():
+    """Adjust the special classpath sys.path entries for Jython. These
+    entries should follow the base virtualenv lib directories.
+    """
+    paths = []
+    classpaths = []
+    for path in sys.path:
+        if path == '__classpath__' or path.startswith('__pyclasspath__'):
+            classpaths.append(path)
+        else:
+            paths.append(path)
+    sys.path = paths
+    sys.path.extend(classpaths)
+
+def execusercustomize():
+    """Run custom user specific code, if available."""
+    try:
+        import usercustomize
+    except ImportError:
+        pass
+
+
+def main():
+    global ENABLE_USER_SITE
+    virtual_install_main_packages()
+    abs__file__()
+    paths_in_sys = removeduppaths()
+    if (os.name == "posix" and sys.path and
+        os.path.basename(sys.path[-1]) == "Modules"):
+        addbuilddir()
+    if _is_jython:
+        fixclasspath()
+    GLOBAL_SITE_PACKAGES = not os.path.exists(os.path.join(os.path.dirname(__file__), 'no-global-site-packages.txt'))
+    if not GLOBAL_SITE_PACKAGES:
+        ENABLE_USER_SITE = False
+    if ENABLE_USER_SITE is None:
+        ENABLE_USER_SITE = check_enableusersite()
+    paths_in_sys = addsitepackages(paths_in_sys)
+    paths_in_sys = addusersitepackages(paths_in_sys)
+    if GLOBAL_SITE_PACKAGES:
+        paths_in_sys = virtual_addsitepackages(paths_in_sys)
+    if sys.platform == 'os2emx':
+        setBEGINLIBPATH()
+    setquit()
+    setcopyright()
+    sethelper()
+    aliasmbcs()
+    setencoding()
+    execsitecustomize()
+    if ENABLE_USER_SITE:
+        execusercustomize()
+    # Remove sys.setdefaultencoding() so that users cannot change the
+    # encoding after initialization.  The test for presence is needed when
+    # this module is run as a script, because this code is executed twice.
+    if hasattr(sys, "setdefaultencoding"):
+        del sys.setdefaultencoding
+
+main()
+
+def _script():
+    help = """\
+    %s [--user-base] [--user-site]
+
+    Without arguments print some useful information
+    With arguments print the value of USER_BASE and/or USER_SITE separated
+    by '%s'.
+
+    Exit codes with --user-base or --user-site:
+      0 - user site directory is enabled
+      1 - user site directory is disabled by user
+      2 - uses site directory is disabled by super user
+          or for security reasons
+     >2 - unknown error
+    """
+    args = sys.argv[1:]
+    if not args:
+        print("sys.path = [")
+        for dir in sys.path:
+            print("    %r," % (dir,))
+        print("]")
+        def exists(path):
+            if os.path.isdir(path):
+                return "exists"
+            else:
+                return "doesn't exist"
+        print("USER_BASE: %r (%s)" % (USER_BASE, exists(USER_BASE)))
+        print("USER_SITE: %r (%s)" % (USER_SITE, exists(USER_BASE)))
+        print("ENABLE_USER_SITE: %r" %  ENABLE_USER_SITE)
+        sys.exit(0)
+
+    buffer = []
+    if '--user-base' in args:
+        buffer.append(USER_BASE)
+    if '--user-site' in args:
+        buffer.append(USER_SITE)
+
+    if buffer:
+        print(os.pathsep.join(buffer))
+        if ENABLE_USER_SITE:
+            sys.exit(0)
+        elif ENABLE_USER_SITE is False:
+            sys.exit(1)
+        elif ENABLE_USER_SITE is None:
+            sys.exit(2)
+        else:
+            sys.exit(3)
+    else:
+        import textwrap
+        print(textwrap.dedent(help % (sys.argv[0], os.pathsep)))
+        sys.exit(10)
+
+if __name__ == '__main__':
+    _script()
diff --git a/testing/mozharness/external_tools/virtualenv/tests/__init__.py b/testing/mozharness/external_tools/virtualenv/tests/__init__.py
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/tests/__init__.py
diff --git a/testing/mozharness/external_tools/virtualenv/tests/test_activate.sh b/testing/mozharness/external_tools/virtualenv/tests/test_activate.sh
new file mode 100755
index 000000000..e27727386
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/tests/test_activate.sh
@@ -0,0 +1,96 @@
+#!/bin/sh
+
+set -u
+
+ROOT="$(dirname $0)/.."
+VIRTUALENV="${ROOT}/virtualenv.py"
+TESTENV="/tmp/test_virtualenv_activate.venv"
+
+rm -rf ${TESTENV}
+
+echo "$0: Creating virtualenv ${TESTENV}..." 1>&2
+
+${VIRTUALENV} ${TESTENV} | tee ${ROOT}/tests/test_activate_output.actual
+if ! diff ${ROOT}/tests/test_activate_output.expected ${ROOT}/tests/test_activate_output.actual; then
+    echo "$0: Failed to get expected output from ${VIRTUALENV}!" 1>&2
+    exit 1
+fi
+
+echo "$0: Created virtualenv ${TESTENV}." 1>&2
+
+echo "$0: Activating ${TESTENV}..." 1>&2
+. ${TESTENV}/bin/activate
+echo "$0: Activated ${TESTENV}." 1>&2
+
+echo "$0: Checking value of \$VIRTUAL_ENV..." 1>&2
+
+if [ "$VIRTUAL_ENV" != "${TESTENV}" ]; then
+    echo "$0: Expected \$VIRTUAL_ENV to be set to \"${TESTENV}\"; actual value: \"${VIRTUAL_ENV}\"!" 1>&2
+    exit 2
+fi
+
+echo "$0: \$VIRTUAL_ENV = \"${VIRTUAL_ENV}\" -- OK." 1>&2
+
+echo "$0: Checking output of \$(which python)..." 1>&2
+
+if [ "$(which python)" != "${TESTENV}/bin/python" ]; then
+    echo "$0: Expected \$(which python) to return \"${TESTENV}/bin/python\"; actual value: \"$(which python)\"!" 1>&2
+    exit 3
+fi
+
+echo "$0: Output of \$(which python) is OK." 1>&2
+
+echo "$0: Checking output of \$(which pip)..." 1>&2
+
+if [ "$(which pip)" != "${TESTENV}/bin/pip" ]; then
+    echo "$0: Expected \$(which pip) to return \"${TESTENV}/bin/pip\"; actual value: \"$(which pip)\"!" 1>&2
+    exit 4
+fi
+
+echo "$0: Output of \$(which pip) is OK." 1>&2
+
+echo "$0: Checking output of \$(which easy_install)..." 1>&2
+
+if [ "$(which easy_install)" != "${TESTENV}/bin/easy_install" ]; then
+    echo "$0: Expected \$(which easy_install) to return \"${TESTENV}/bin/easy_install\"; actual value: \"$(which easy_install)\"!" 1>&2
+    exit 5
+fi
+
+echo "$0: Output of \$(which easy_install) is OK." 1>&2
+
+echo "$0: Executing a simple Python program..." 1>&2
+
+TESTENV=${TESTENV} python <<__END__
+import os, sys
+
+expected_site_packages = os.path.join(os.environ['TESTENV'], 'lib','python%s' % sys.version[:3], 'site-packages')
+site_packages = os.path.join(os.environ['VIRTUAL_ENV'], 'lib', 'python%s' % sys.version[:3], 'site-packages')
+
+assert site_packages == expected_site_packages, 'site_packages did not have expected value; actual value: %r' % site_packages
+
+open(os.path.join(site_packages, 'pydoc_test.py'), 'w').write('"""This is pydoc_test.py"""\n')
+__END__
+
+if [ $? -ne 0 ]; then
+    echo "$0: Python script failed!" 1>&2
+    exit 6
+fi
+
+echo "$0: Execution of a simple Python program -- OK." 1>&2
+
+echo "$0: Testing pydoc..." 1>&2
+
+if ! PAGER=cat pydoc pydoc_test | grep 'This is pydoc_test.py' > /dev/null; then
+    echo "$0: pydoc test failed!" 1>&2
+    exit 7
+fi
+
+echo "$0: pydoc is OK." 1>&2
+
+echo "$0: Deactivating ${TESTENV}..." 1>&2
+deactivate
+echo "$0: Deactivated ${TESTENV}." 1>&2
+echo "$0: OK!" 1>&2
+
+rm -rf ${TESTENV}
+
diff --git a/testing/mozharness/external_tools/virtualenv/tests/test_activate_output.expected b/testing/mozharness/external_tools/virtualenv/tests/test_activate_output.expected
new file mode 100644
index 000000000..d49469feb
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/tests/test_activate_output.expected
@@ -0,0 +1,2 @@
+New python executable in /tmp/test_virtualenv_activate.venv/bin/python
+Installing setuptools, pip, wheel...done.
diff --git a/testing/mozharness/external_tools/virtualenv/tests/test_cmdline.py b/testing/mozharness/external_tools/virtualenv/tests/test_cmdline.py
new file mode 100644
index 000000000..9682ef003
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/tests/test_cmdline.py
@@ -0,0 +1,44 @@
+import sys
+import subprocess
+import virtualenv
+import pytest
+
+VIRTUALENV_SCRIPT = virtualenv.__file__
+
+def test_commandline_basic(tmpdir):
+    """Simple command line usage should work"""
+    subprocess.check_call([
+        sys.executable,
+        VIRTUALENV_SCRIPT,
+        str(tmpdir.join('venv'))
+    ])
+
+def test_commandline_explicit_interp(tmpdir):
+    """Specifying the Python interpreter should work"""
+    subprocess.check_call([
+        sys.executable,
+        VIRTUALENV_SCRIPT,
+        '-p', sys.executable,
+        str(tmpdir.join('venv'))
+    ])
+
+# The registry lookups to support the abbreviated "-p 3.5" form of specifying
+# a Python interpreter on Windows don't seem to work with Python 3.5. The
+# registry layout is not well documented, and it's not clear that the feature
+# is sufficiently widely used to be worth fixing.
+# See https://github.com/pypa/virtualenv/issues/864
+@pytest.mark.skipif("sys.platform == 'win32' and sys.version_info[:2] >= (3,5)")
+def test_commandline_abbrev_interp(tmpdir):
+    """Specifying abbreviated forms of the Python interpreter should work"""
+    if sys.platform == 'win32':
+        fmt = '%s.%s'
+    else:
+        fmt = 'python%s.%s'
+    abbrev = fmt % (sys.version_info[0], sys.version_info[1])
+    subprocess.check_call([
+        sys.executable,
+        VIRTUALENV_SCRIPT,
+        '-p', abbrev,
+        str(tmpdir.join('venv'))
+    ])
+
diff --git a/testing/mozharness/external_tools/virtualenv/tests/test_virtualenv.py b/testing/mozharness/external_tools/virtualenv/tests/test_virtualenv.py
new file mode 100644
index 000000000..756cde936
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/tests/test_virtualenv.py
@@ -0,0 +1,139 @@
+import virtualenv
+import optparse
+import os
+import shutil
+import sys
+import tempfile
+import pytest
+import platform  # noqa
+
+from mock import patch, Mock
+
+
+def test_version():
+    """Should have a version string"""
+    assert virtualenv.virtualenv_version, "Should have version"
+
+
+@patch('os.path.exists')
+def test_resolve_interpreter_with_absolute_path(mock_exists):
+    """Should return absolute path if given and exists"""
+    mock_exists.return_value = True
+    virtualenv.is_executable = Mock(return_value=True)
+    test_abs_path = os.path.abspath("/usr/bin/python53")
+
+    exe = virtualenv.resolve_interpreter(test_abs_path)
+
+    assert exe == test_abs_path, "Absolute path should return as is"
+    mock_exists.assert_called_with(test_abs_path)
+    virtualenv.is_executable.assert_called_with(test_abs_path)
+
+
+@patch('os.path.exists')
+def test_resolve_interpreter_with_nonexistent_interpreter(mock_exists):
+    """Should SystemExit with an nonexistent python interpreter path"""
+    mock_exists.return_value = False
+
+    with pytest.raises(SystemExit):
+        virtualenv.resolve_interpreter("/usr/bin/python53")
+
+    mock_exists.assert_called_with("/usr/bin/python53")
+
+
+@patch('os.path.exists')
+def test_resolve_interpreter_with_invalid_interpreter(mock_exists):
+    """Should exit when with absolute path if not exists"""
+    mock_exists.return_value = True
+    virtualenv.is_executable = Mock(return_value=False)
+    invalid = os.path.abspath("/usr/bin/pyt_hon53")
+
+    with pytest.raises(SystemExit):
+        virtualenv.resolve_interpreter(invalid)
+
+    mock_exists.assert_called_with(invalid)
+    virtualenv.is_executable.assert_called_with(invalid)
+
+
+def test_activate_after_future_statements():
+    """Should insert activation line after last future statement"""
+    script = [
+        '#!/usr/bin/env python',
+        'from __future__ import with_statement',
+        'from __future__ import print_function',
+        'print("Hello, world!")'
+    ]
+    assert virtualenv.relative_script(script) == [
+        '#!/usr/bin/env python',
+        'from __future__ import with_statement',
+        'from __future__ import print_function',
+        '',
+        "import os; activate_this=os.path.join(os.path.dirname(os.path.realpath(__file__)), 'activate_this.py'); exec(compile(open(activate_this).read(), activate_this, 'exec'), dict(__file__=activate_this)); del os, activate_this",
+        '',
+        'print("Hello, world!")'
+    ]
+
+
+def test_cop_update_defaults_with_store_false():
+    """store_false options need reverted logic"""
+    class MyConfigOptionParser(virtualenv.ConfigOptionParser):
+        def __init__(self, *args, **kwargs):
+            self.config = virtualenv.ConfigParser.RawConfigParser()
+            self.files = []
+            optparse.OptionParser.__init__(self, *args, **kwargs)
+
+        def get_environ_vars(self, prefix='VIRTUALENV_'):
+            yield ("no_site_packages", "1")
+
+    cop = MyConfigOptionParser()
+    cop.add_option(
+        '--no-site-packages',
+        dest='system_site_packages',
+        action='store_false',
+        help="Don't give access to the global site-packages dir to the "
+             "virtual environment (default)")
+
+    defaults = {}
+    cop.update_defaults(defaults)
+    assert defaults == {'system_site_packages': 0}
+
+def test_install_python_bin():
+    """Should create the right python executables and links"""
+    tmp_virtualenv = tempfile.mkdtemp()
+    try:
+        home_dir, lib_dir, inc_dir, bin_dir = \
+                                virtualenv.path_locations(tmp_virtualenv)
+        virtualenv.install_python(home_dir, lib_dir, inc_dir, bin_dir, False,
+                                  False)
+
+        if virtualenv.is_win:
+            required_executables = [ 'python.exe', 'pythonw.exe']
+        else:
+            py_exe_no_version = 'python'
+            py_exe_version_major = 'python%s' % sys.version_info[0]
+            py_exe_version_major_minor = 'python%s.%s' % (
+                sys.version_info[0], sys.version_info[1])
+            required_executables = [ py_exe_no_version, py_exe_version_major,
+                                     py_exe_version_major_minor ]
+
+        for pth in required_executables:
+            assert os.path.exists(os.path.join(bin_dir, pth)), ("%s should "
+                            "exist in bin_dir" % pth)
+    finally:
+        shutil.rmtree(tmp_virtualenv)
+
+
+@pytest.mark.skipif("platform.python_implementation() == 'PyPy'")
+def test_always_copy_option():
+    """Should be no symlinks in directory tree"""
+    tmp_virtualenv = tempfile.mkdtemp()
+    ve_path = os.path.join(tmp_virtualenv, 'venv')
+    try:
+        virtualenv.create_environment(ve_path, symlink=False)
+
+        for root, dirs, files in os.walk(tmp_virtualenv):
+            for f in files + dirs:
+                full_name = os.path.join(root, f)
+                assert not os.path.islink(full_name), "%s should not be a" \
+                    " symlink (to %s)" % (full_name, os.readlink(full_name))
+    finally:
+        shutil.rmtree(tmp_virtualenv)
diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv.py b/testing/mozharness/external_tools/virtualenv/virtualenv.py
new file mode 100755
index 000000000..e363021cc
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv.py
@@ -0,0 +1,2329 @@
+#!/usr/bin/env python
+"""Create a "virtual" Python installation"""
+
+import os
+import sys
+
+# If we are running in a new interpreter to create a virtualenv,
+# we do NOT want paths from our existing location interfering with anything,
+# So we remove this file's directory from sys.path - most likely to be
+# the previous interpreter's site-packages. Solves #705, #763, #779
+if os.environ.get('VIRTUALENV_INTERPRETER_RUNNING'):
+    for path in sys.path[:]:
+        if os.path.realpath(os.path.dirname(__file__)) == os.path.realpath(path):
+            sys.path.remove(path)
+
+import base64
+import codecs
+import optparse
+import re
+import shutil
+import logging
+import zlib
+import errno
+import glob
+import distutils.sysconfig
+import struct
+import subprocess
+import pkgutil
+import tempfile
+import textwrap
+from distutils.util import strtobool
+from os.path import join
+
+try:
+    import ConfigParser
+except ImportError:
+    import configparser as ConfigParser
+
+__version__ = "15.0.1"
+virtualenv_version = __version__  # legacy
+
+if sys.version_info < (2, 6):
+    print('ERROR: %s' % sys.exc_info()[1])
+    print('ERROR: this script requires Python 2.6 or greater.')
+    sys.exit(101)
+
+try:
+    basestring
+except NameError:
+    basestring = str
+
+py_version = 'python%s.%s' % (sys.version_info[0], sys.version_info[1])
+
+is_jython = sys.platform.startswith('java')
+is_pypy = hasattr(sys, 'pypy_version_info')
+is_win = (sys.platform == 'win32' and os.sep == '\\')
+is_cygwin = (sys.platform == 'cygwin')
+is_msys2 = (sys.platform == 'win32' and os.sep == '/')
+is_darwin = (sys.platform == 'darwin')
+abiflags = getattr(sys, 'abiflags', '')
+
+user_dir = os.path.expanduser('~')
+if is_win:
+    default_storage_dir = os.path.join(user_dir, 'virtualenv')
+else:
+    default_storage_dir = os.path.join(user_dir, '.virtualenv')
+default_config_file = os.path.join(default_storage_dir, 'virtualenv.ini')
+
+if is_pypy:
+    expected_exe = 'pypy'
+elif is_jython:
+    expected_exe = 'jython'
+else:
+    expected_exe = 'python'
+
+# Return a mapping of version -> Python executable
+# Only provided for Windows, where the information in the registry is used
+if not is_win:
+    def get_installed_pythons():
+        return {}
+else:
+    try:
+        import winreg
+    except ImportError:
+        import _winreg as winreg
+
+    def get_installed_pythons():
+        try:
+            python_core = winreg.CreateKey(winreg.HKEY_LOCAL_MACHINE,
+                                           "Software\\Python\\PythonCore")
+        except WindowsError:
+            # No registered Python installations
+            return {}
+        i = 0
+        versions = []
+        while True:
+            try:
+                versions.append(winreg.EnumKey(python_core, i))
+                i = i + 1
+            except WindowsError:
+                break
+        exes = dict()
+        for ver in versions:
+            try:
+                path = winreg.QueryValue(python_core, "%s\\InstallPath" % ver)
+            except WindowsError:
+                continue
+            exes[ver] = join(path, "python.exe")
+
+        winreg.CloseKey(python_core)
+
+        # Add the major versions
+        # Sort the keys, then repeatedly update the major version entry
+        # Last executable (i.e., highest version) wins with this approach
+        for ver in sorted(exes):
+            exes[ver[0]] = exes[ver]
+
+        return exes
+
+REQUIRED_MODULES = ['os', 'posix', 'posixpath', 'nt', 'ntpath', 'genericpath',
+                    'fnmatch', 'locale', 'encodings', 'codecs',
+                    'stat', 'UserDict', 'readline', 'copy_reg', 'types',
+                    're', 'sre', 'sre_parse', 'sre_constants', 'sre_compile',
+                    'zlib']
+
+REQUIRED_FILES = ['lib-dynload', 'config']
+
+majver, minver = sys.version_info[:2]
+if majver == 2:
+    if minver >= 6:
+        REQUIRED_MODULES.extend(['warnings', 'linecache', '_abcoll', 'abc'])
+    if minver >= 7:
+        REQUIRED_MODULES.extend(['_weakrefset'])
+    if is_msys2:
+        REQUIRED_MODULES.extend(['functools'])
+elif majver == 3:
+    # Some extra modules are needed for Python 3, but different ones
+    # for different versions.
+    REQUIRED_MODULES.extend([
+    	'_abcoll', 'warnings', 'linecache', 'abc', 'io', '_weakrefset',
+    	'copyreg', 'tempfile', 'random', '__future__', 'collections',
+    	'keyword', 'tarfile', 'shutil', 'struct', 'copy', 'tokenize',
+    	'token', 'functools', 'heapq', 'bisect', 'weakref', 'reprlib'
+    ])
+    if minver >= 2:
+        REQUIRED_FILES[-1] = 'config-%s' % majver
+    if minver >= 3:
+        import sysconfig
+        platdir = sysconfig.get_config_var('PLATDIR')
+        REQUIRED_FILES.append(platdir)
+        REQUIRED_MODULES.extend([
+        	'base64', '_dummy_thread', 'hashlib', 'hmac',
+        	'imp', 'importlib', 'rlcompleter'
+        ])
+    if minver >= 4:
+        REQUIRED_MODULES.extend([
+            'operator',
+            '_collections_abc',
+            '_bootlocale',
+        ])
+
+if is_pypy:
+    # these are needed to correctly display the exceptions that may happen
+    # during the bootstrap
+    REQUIRED_MODULES.extend(['traceback', 'linecache'])
+
+
+class Logger(object):
+
+    """
+    Logging object for use in command-line script.  Allows ranges of
+    levels, to avoid some redundancy of displayed information.
+    """
+
+    DEBUG = logging.DEBUG
+    INFO = logging.INFO
+    NOTIFY = (logging.INFO+logging.WARN)/2
+    WARN = WARNING = logging.WARN
+    ERROR = logging.ERROR
+    FATAL = logging.FATAL
+
+    LEVELS = [DEBUG, INFO, NOTIFY, WARN, ERROR, FATAL]
+
+    def __init__(self, consumers):
+        self.consumers = consumers
+        self.indent = 0
+        self.in_progress = None
+        self.in_progress_hanging = False
+
+    def debug(self, msg, *args, **kw):
+        self.log(self.DEBUG, msg, *args, **kw)
+
+    def info(self, msg, *args, **kw):
+        self.log(self.INFO, msg, *args, **kw)
+
+    def notify(self, msg, *args, **kw):
+        self.log(self.NOTIFY, msg, *args, **kw)
+
+    def warn(self, msg, *args, **kw):
+        self.log(self.WARN, msg, *args, **kw)
+
+    def error(self, msg, *args, **kw):
+        self.log(self.ERROR, msg, *args, **kw)
+
+    def fatal(self, msg, *args, **kw):
+        self.log(self.FATAL, msg, *args, **kw)
+
+    def log(self, level, msg, *args, **kw):
+        if args:
+            if kw:
+                raise TypeError(
+                    "You may give positional or keyword arguments, not both")
+        args = args or kw
+        rendered = None
+        for consumer_level, consumer in self.consumers:
+            if self.level_matches(level, consumer_level):
+                if (self.in_progress_hanging
+                    and consumer in (sys.stdout, sys.stderr)):
+                    self.in_progress_hanging = False
+                    sys.stdout.write('\n')
+                    sys.stdout.flush()
+                if rendered is None:
+                    if args:
+                        rendered = msg % args
+                    else:
+                        rendered = msg
+                    rendered = ' '*self.indent + rendered
+                if hasattr(consumer, 'write'):
+                    consumer.write(rendered+'\n')
+                else:
+                    consumer(rendered)
+
+    def start_progress(self, msg):
+        assert not self.in_progress, (
+            "Tried to start_progress(%r) while in_progress %r"
+            % (msg, self.in_progress))
+        if self.level_matches(self.NOTIFY, self._stdout_level()):
+            sys.stdout.write(msg)
+            sys.stdout.flush()
+            self.in_progress_hanging = True
+        else:
+            self.in_progress_hanging = False
+        self.in_progress = msg
+
+    def end_progress(self, msg='done.'):
+        assert self.in_progress, (
+            "Tried to end_progress without start_progress")
+        if self.stdout_level_matches(self.NOTIFY):
+            if not self.in_progress_hanging:
+                # Some message has been printed out since start_progress
+                sys.stdout.write('...' + self.in_progress + msg + '\n')
+                sys.stdout.flush()
+            else:
+                sys.stdout.write(msg + '\n')
+                sys.stdout.flush()
+        self.in_progress = None
+        self.in_progress_hanging = False
+
+    def show_progress(self):
+        """If we are in a progress scope, and no log messages have been
+        shown, write out another '.'"""
+        if self.in_progress_hanging:
+            sys.stdout.write('.')
+            sys.stdout.flush()
+
+    def stdout_level_matches(self, level):
+        """Returns true if a message at this level will go to stdout"""
+        return self.level_matches(level, self._stdout_level())
+
+    def _stdout_level(self):
+        """Returns the level that stdout runs at"""
+        for level, consumer in self.consumers:
+            if consumer is sys.stdout:
+                return level
+        return self.FATAL
+
+    def level_matches(self, level, consumer_level):
+        """
+        >>> l = Logger([])
+        >>> l.level_matches(3, 4)
+        False
+        >>> l.level_matches(3, 2)
+        True
+        >>> l.level_matches(slice(None, 3), 3)
+        False
+        >>> l.level_matches(slice(None, 3), 2)
+        True
+        >>> l.level_matches(slice(1, 3), 1)
+        True
+        >>> l.level_matches(slice(2, 3), 1)
+        False
+        """
+        if isinstance(level, slice):
+            start, stop = level.start, level.stop
+            if start is not None and start > consumer_level:
+                return False
+            if stop is not None and stop <= consumer_level:
+                return False
+            return True
+        else:
+            return level >= consumer_level
+
+    #@classmethod
+    def level_for_integer(cls, level):
+        levels = cls.LEVELS
+        if level < 0:
+            return levels[0]
+        if level >= len(levels):
+            return levels[-1]
+        return levels[level]
+
+    level_for_integer = classmethod(level_for_integer)
+
+# create a silent logger just to prevent this from being undefined
+# will be overridden with requested verbosity main() is called.
+logger = Logger([(Logger.LEVELS[-1], sys.stdout)])
+
+def mkdir(path):
+    if not os.path.exists(path):
+        logger.info('Creating %s', path)
+        os.makedirs(path)
+    else:
+        logger.info('Directory %s already exists', path)
+
+def copyfileordir(src, dest, symlink=True):
+    if os.path.isdir(src):
+        shutil.copytree(src, dest, symlink)
+    else:
+        shutil.copy2(src, dest)
+
+def copyfile(src, dest, symlink=True):
+    if not os.path.exists(src):
+        # Some bad symlink in the src
+        logger.warn('Cannot find file %s (bad symlink)', src)
+        return
+    if os.path.exists(dest):
+        logger.debug('File %s already exists', dest)
+        return
+    if not os.path.exists(os.path.dirname(dest)):
+        logger.info('Creating parent directories for %s', os.path.dirname(dest))
+        os.makedirs(os.path.dirname(dest))
+    if not os.path.islink(src):
+        srcpath = os.path.abspath(src)
+    else:
+        srcpath = os.readlink(src)
+    if symlink and hasattr(os, 'symlink') and not is_win:
+        logger.info('Symlinking %s', dest)
+        try:
+            os.symlink(srcpath, dest)
+        except (OSError, NotImplementedError):
+            logger.info('Symlinking failed, copying to %s', dest)
+            copyfileordir(src, dest, symlink)
+    else:
+        logger.info('Copying to %s', dest)
+        copyfileordir(src, dest, symlink)
+
+def writefile(dest, content, overwrite=True):
+    if not os.path.exists(dest):
+        logger.info('Writing %s', dest)
+        with open(dest, 'wb') as f:
+            f.write(content.encode('utf-8'))
+        return
+    else:
+        with open(dest, 'rb') as f:
+            c = f.read()
+        if c != content.encode("utf-8"):
+            if not overwrite:
+                logger.notify('File %s exists with different content; not overwriting', dest)
+                return
+            logger.notify('Overwriting %s with new content', dest)
+            with open(dest, 'wb') as f:
+                f.write(content.encode('utf-8'))
+        else:
+            logger.info('Content %s already in place', dest)
+
+def rmtree(dir):
+    if os.path.exists(dir):
+        logger.notify('Deleting tree %s', dir)
+        shutil.rmtree(dir)
+    else:
+        logger.info('Do not need to delete %s; already gone', dir)
+
+def make_exe(fn):
+    if hasattr(os, 'chmod'):
+        oldmode = os.stat(fn).st_mode & 0xFFF # 0o7777
+        newmode = (oldmode | 0x16D) & 0xFFF # 0o555, 0o7777
+        os.chmod(fn, newmode)
+        logger.info('Changed mode of %s to %s', fn, oct(newmode))
+
+def _find_file(filename, dirs):
+    for dir in reversed(dirs):
+        files = glob.glob(os.path.join(dir, filename))
+        if files and os.path.isfile(files[0]):
+            return True, files[0]
+    return False, filename
+
+def file_search_dirs():
+    here = os.path.dirname(os.path.abspath(__file__))
+    dirs = [here, join(here, 'virtualenv_support')]
+    if os.path.splitext(os.path.dirname(__file__))[0] != 'virtualenv':
+        # Probably some boot script; just in case virtualenv is installed...
+        try:
+            import virtualenv
+        except ImportError:
+            pass
+        else:
+            dirs.append(os.path.join(
+                os.path.dirname(virtualenv.__file__), 'virtualenv_support'))
+    return [d for d in dirs if os.path.isdir(d)]
+
+
+class UpdatingDefaultsHelpFormatter(optparse.IndentedHelpFormatter):
+    """
+    Custom help formatter for use in ConfigOptionParser that updates
+    the defaults before expanding them, allowing them to show up correctly
+    in the help listing
+    """
+    def expand_default(self, option):
+        if self.parser is not None:
+            self.parser.update_defaults(self.parser.defaults)
+        return optparse.IndentedHelpFormatter.expand_default(self, option)
+
+
+class ConfigOptionParser(optparse.OptionParser):
+    """
+    Custom option parser which updates its defaults by checking the
+    configuration files and environmental variables
+    """
+    def __init__(self, *args, **kwargs):
+        self.config = ConfigParser.RawConfigParser()
+        self.files = self.get_config_files()
+        self.config.read(self.files)
+        optparse.OptionParser.__init__(self, *args, **kwargs)
+
+    def get_config_files(self):
+        config_file = os.environ.get('VIRTUALENV_CONFIG_FILE', False)
+        if config_file and os.path.exists(config_file):
+            return [config_file]
+        return [default_config_file]
+
+    def update_defaults(self, defaults):
+        """
+        Updates the given defaults with values from the config files and
+        the environ. Does a little special handling for certain types of
+        options (lists).
+        """
+        # Then go and look for the other sources of configuration:
+        config = {}
+        # 1. config files
+        config.update(dict(self.get_config_section('virtualenv')))
+        # 2. environmental variables
+        config.update(dict(self.get_environ_vars()))
+        # Then set the options with those values
+        for key, val in config.items():
+            key = key.replace('_', '-')
+            if not key.startswith('--'):
+                key = '--%s' % key  # only prefer long opts
+            option = self.get_option(key)
+            if option is not None:
+                # ignore empty values
+                if not val:
+                    continue
+                # handle multiline configs
+                if option.action == 'append':
+                    val = val.split()
+                else:
+                    option.nargs = 1
+                if option.action == 'store_false':
+                    val = not strtobool(val)
+                elif option.action in ('store_true', 'count'):
+                    val = strtobool(val)
+                try:
+                    val = option.convert_value(key, val)
+                except optparse.OptionValueError:
+                    e = sys.exc_info()[1]
+                    print("An error occurred during configuration: %s" % e)
+                    sys.exit(3)
+                defaults[option.dest] = val
+        return defaults
+
+    def get_config_section(self, name):
+        """
+        Get a section of a configuration
+        """
+        if self.config.has_section(name):
+            return self.config.items(name)
+        return []
+
+    def get_environ_vars(self, prefix='VIRTUALENV_'):
+        """
+        Returns a generator with all environmental vars with prefix VIRTUALENV
+        """
+        for key, val in os.environ.items():
+            if key.startswith(prefix):
+                yield (key.replace(prefix, '').lower(), val)
+
+    def get_default_values(self):
+        """
+        Overridding to make updating the defaults after instantiation of
+        the option parser possible, update_defaults() does the dirty work.
+        """
+        if not self.process_default_values:
+            # Old, pre-Optik 1.5 behaviour.
+            return optparse.Values(self.defaults)
+
+        defaults = self.update_defaults(self.defaults.copy())  # ours
+        for option in self._get_all_options():
+            default = defaults.get(option.dest)
+            if isinstance(default, basestring):
+                opt_str = option.get_opt_string()
+                defaults[option.dest] = option.check_value(opt_str, default)
+        return optparse.Values(defaults)
+
+
+def main():
+    parser = ConfigOptionParser(
+        version=virtualenv_version,
+        usage="%prog [OPTIONS] DEST_DIR",
+        formatter=UpdatingDefaultsHelpFormatter())
+
+    parser.add_option(
+        '-v', '--verbose',
+        action='count',
+        dest='verbose',
+        default=0,
+        help="Increase verbosity.")
+
+    parser.add_option(
+        '-q', '--quiet',
+        action='count',
+        dest='quiet',
+        default=0,
+        help='Decrease verbosity.')
+
+    parser.add_option(
+        '-p', '--python',
+        dest='python',
+        metavar='PYTHON_EXE',
+        help='The Python interpreter to use, e.g., --python=python2.5 will use the python2.5 '
+        'interpreter to create the new environment.  The default is the interpreter that '
+        'virtualenv was installed with (%s)' % sys.executable)
+
+    parser.add_option(
+        '--clear',
+        dest='clear',
+        action='store_true',
+        help="Clear out the non-root install and start from scratch.")
+
+    parser.set_defaults(system_site_packages=False)
+    parser.add_option(
+        '--no-site-packages',
+        dest='system_site_packages',
+        action='store_false',
+        help="DEPRECATED. Retained only for backward compatibility. "
+             "Not having access to global site-packages is now the default behavior.")
+
+    parser.add_option(
+        '--system-site-packages',
+        dest='system_site_packages',
+        action='store_true',
+        help="Give the virtual environment access to the global site-packages.")
+
+    parser.add_option(
+        '--always-copy',
+        dest='symlink',
+        action='store_false',
+        default=True,
+        help="Always copy files rather than symlinking.")
+
+    parser.add_option(
+        '--unzip-setuptools',
+        dest='unzip_setuptools',
+        action='store_true',
+        help="Unzip Setuptools when installing it.")
+
+    parser.add_option(
+        '--relocatable',
+        dest='relocatable',
+        action='store_true',
+        help='Make an EXISTING virtualenv environment relocatable. '
+             'This fixes up scripts and makes all .pth files relative.')
+
+    parser.add_option(
+        '--no-setuptools',
+        dest='no_setuptools',
+        action='store_true',
+        help='Do not install setuptools in the new virtualenv.')
+
+    parser.add_option(
+        '--no-pip',
+        dest='no_pip',
+        action='store_true',
+        help='Do not install pip in the new virtualenv.')
+
+    parser.add_option(
+        '--no-wheel',
+        dest='no_wheel',
+        action='store_true',
+        help='Do not install wheel in the new virtualenv.')
+
+    default_search_dirs = file_search_dirs()
+    parser.add_option(
+        '--extra-search-dir',
+        dest="search_dirs",
+        action="append",
+        metavar='DIR',
+        default=default_search_dirs,
+        help="Directory to look for setuptools/pip distributions in. "
+              "This option can be used multiple times.")
+
+    parser.add_option(
+        "--download",
+        dest="download",
+        default=True,
+        action="store_true",
+        help="Download preinstalled packages from PyPI.",
+    )
+
+    parser.add_option(
+        "--no-download",
+        '--never-download',
+        dest="download",
+        action="store_false",
+        help="Do not download preinstalled packages from PyPI.",
+    )
+
+    parser.add_option(
+        '--prompt',
+        dest='prompt',
+        help='Provides an alternative prompt prefix for this environment.')
+
+    parser.add_option(
+        '--setuptools',
+        dest='setuptools',
+        action='store_true',
+        help="DEPRECATED. Retained only for backward compatibility. This option has no effect.")
+
+    parser.add_option(
+        '--distribute',
+        dest='distribute',
+        action='store_true',
+        help="DEPRECATED. Retained only for backward compatibility. This option has no effect.")
+
+    if 'extend_parser' in globals():
+        extend_parser(parser)
+
+    options, args = parser.parse_args()
+
+    global logger
+
+    if 'adjust_options' in globals():
+        adjust_options(options, args)
+
+    verbosity = options.verbose - options.quiet
+    logger = Logger([(Logger.level_for_integer(2 - verbosity), sys.stdout)])
+
+    if options.python and not os.environ.get('VIRTUALENV_INTERPRETER_RUNNING'):
+        env = os.environ.copy()
+        interpreter = resolve_interpreter(options.python)
+        if interpreter == sys.executable:
+            logger.warn('Already using interpreter %s' % interpreter)
+        else:
+            logger.notify('Running virtualenv with interpreter %s' % interpreter)
+            env['VIRTUALENV_INTERPRETER_RUNNING'] = 'true'
+            file = __file__
+            if file.endswith('.pyc'):
+                file = file[:-1]
+            popen = subprocess.Popen([interpreter, file] + sys.argv[1:], env=env)
+            raise SystemExit(popen.wait())
+
+    if not args:
+        print('You must provide a DEST_DIR')
+        parser.print_help()
+        sys.exit(2)
+    if len(args) > 1:
+        print('There must be only one argument: DEST_DIR (you gave %s)' % (
+            ' '.join(args)))
+        parser.print_help()
+        sys.exit(2)
+
+    home_dir = args[0]
+
+    if os.path.exists(home_dir) and os.path.isfile(home_dir):
+        logger.fatal('ERROR: File already exists and is not a directory.')
+        logger.fatal('Please provide a different path or delete the file.')
+        sys.exit(3)
+
+    if os.environ.get('WORKING_ENV'):
+        logger.fatal('ERROR: you cannot run virtualenv while in a workingenv')
+        logger.fatal('Please deactivate your workingenv, then re-run this script')
+        sys.exit(3)
+
+    if 'PYTHONHOME' in os.environ:
+        logger.warn('PYTHONHOME is set.  You *must* activate the virtualenv before using it')
+        del os.environ['PYTHONHOME']
+
+    if options.relocatable:
+        make_environment_relocatable(home_dir)
+        return
+
+    create_environment(home_dir,
+                       site_packages=options.system_site_packages,
+                       clear=options.clear,
+                       unzip_setuptools=options.unzip_setuptools,
+                       prompt=options.prompt,
+                       search_dirs=options.search_dirs,
+                       download=options.download,
+                       no_setuptools=options.no_setuptools,
+                       no_pip=options.no_pip,
+                       no_wheel=options.no_wheel,
+                       symlink=options.symlink and hasattr(os, 'symlink')) # MOZ: Make sure we don't use symlink when we don't have it
+    if 'after_install' in globals():
+        after_install(options, home_dir)
+
+def call_subprocess(cmd, show_stdout=True,
+                    filter_stdout=None, cwd=None,
+                    raise_on_returncode=True, extra_env=None,
+                    remove_from_env=None, stdin=None):
+    cmd_parts = []
+    for part in cmd:
+        if len(part) > 45:
+            part = part[:20]+"..."+part[-20:]
+        if ' ' in part or '\n' in part or '"' in part or "'" in part:
+            part = '"%s"' % part.replace('"', '\\"')
+        if hasattr(part, 'decode'):
+            try:
+                part = part.decode(sys.getdefaultencoding())
+            except UnicodeDecodeError:
+                part = part.decode(sys.getfilesystemencoding())
+        cmd_parts.append(part)
+    cmd_desc = ' '.join(cmd_parts)
+    if show_stdout:
+        stdout = None
+    else:
+        stdout = subprocess.PIPE
+    logger.debug("Running command %s" % cmd_desc)
+    if extra_env or remove_from_env:
+        env = os.environ.copy()
+        if extra_env:
+            env.update(extra_env)
+        if remove_from_env:
+            for varname in remove_from_env:
+                env.pop(varname, None)
+    else:
+        env = None
+    try:
+        proc = subprocess.Popen(
+            cmd, stderr=subprocess.STDOUT,
+            stdin=None if stdin is None else subprocess.PIPE,
+            stdout=stdout,
+            cwd=cwd, env=env)
+    except Exception:
+        e = sys.exc_info()[1]
+        logger.fatal(
+            "Error %s while executing command %s" % (e, cmd_desc))
+        raise
+    all_output = []
+    if stdout is not None:
+        if stdin is not None:
+            proc.stdin.write(stdin)
+            proc.stdin.close()
+
+        stdout = proc.stdout
+        encoding = sys.getdefaultencoding()
+        fs_encoding = sys.getfilesystemencoding()
+        while 1:
+            line = stdout.readline()
+            try:
+                line = line.decode(encoding)
+            except UnicodeDecodeError:
+                line = line.decode(fs_encoding)
+            if not line:
+                break
+            line = line.rstrip()
+            all_output.append(line)
+            if filter_stdout:
+                level = filter_stdout(line)
+                if isinstance(level, tuple):
+                    level, line = level
+                logger.log(level, line)
+                if not logger.stdout_level_matches(level):
+                    logger.show_progress()
+            else:
+                logger.info(line)
+    else:
+        proc.communicate(stdin)
+    proc.wait()
+    if proc.returncode:
+        if raise_on_returncode:
+            if all_output:
+                logger.notify('Complete output from command %s:' % cmd_desc)
+                logger.notify('\n'.join(all_output) + '\n----------------------------------------')
+            raise OSError(
+                "Command %s failed with error code %s"
+                % (cmd_desc, proc.returncode))
+        else:
+            logger.warn(
+                "Command %s had error code %s"
+                % (cmd_desc, proc.returncode))
+
+def filter_install_output(line):
+    if line.strip().startswith('running'):
+        return Logger.INFO
+    return Logger.DEBUG
+
+def find_wheels(projects, search_dirs):
+    """Find wheels from which we can import PROJECTS.
+
+    Scan through SEARCH_DIRS for a wheel for each PROJECT in turn. Return
+    a list of the first wheel found for each PROJECT
+    """
+
+    wheels = []
+
+    # Look through SEARCH_DIRS for the first suitable wheel. Don't bother
+    # about version checking here, as this is simply to get something we can
+    # then use to install the correct version.
+    for project in projects:
+        for dirname in search_dirs:
+            # This relies on only having "universal" wheels available.
+            # The pattern could be tightened to require -py2.py3-none-any.whl.
+            files = glob.glob(os.path.join(dirname, project + '-*.whl'))
+            if files:
+                wheels.append(os.path.abspath(files[0]))
+                break
+        else:
+            # We're out of luck, so quit with a suitable error
+            logger.fatal('Cannot find a wheel for %s' % (project,))
+
+    return wheels
+
+def install_wheel(project_names, py_executable, search_dirs=None,
+                  download=False):
+    if search_dirs is None:
+        search_dirs = file_search_dirs()
+
+    wheels = find_wheels(['setuptools', 'pip'], search_dirs)
+    pythonpath = os.pathsep.join(wheels)
+
+    # PIP_FIND_LINKS uses space as the path separator and thus cannot have paths
+    # with spaces in them. Convert any of those to local file:// URL form.
+    try:
+        from urlparse import urljoin
+        from urllib import pathname2url
+    except ImportError:
+        from urllib.parse import urljoin
+        from urllib.request import pathname2url
+    def space_path2url(p):
+        if ' ' not in p:
+            return p
+        return urljoin('file:', pathname2url(os.path.abspath(p)))
+    findlinks = ' '.join(space_path2url(d) for d in search_dirs)
+
+    SCRIPT = textwrap.dedent("""
+        import sys
+        import pkgutil
+        import tempfile
+        import os
+
+        import pip
+
+        cert_data = pkgutil.get_data("pip._vendor.requests", "cacert.pem")
+        if cert_data is not None:
+            cert_file = tempfile.NamedTemporaryFile(delete=False)
+            cert_file.write(cert_data)
+            cert_file.close()
+        else:
+            cert_file = None
+
+        try:
+            args = ["install", "--ignore-installed"]
+            if cert_file is not None:
+                args += ["--cert", cert_file.name]
+            args += sys.argv[1:]
+
+            sys.exit(pip.main(args))
+        finally:
+            if cert_file is not None:
+                os.remove(cert_file.name)
+    """).encode("utf8")
+
+    cmd = [py_executable, '-'] + project_names
+    logger.start_progress('Installing %s...' % (', '.join(project_names)))
+    logger.indent += 2
+
+    env = {
+        "PYTHONPATH": pythonpath,
+        "JYTHONPATH": pythonpath,  # for Jython < 3.x
+        "PIP_FIND_LINKS": findlinks,
+        "PIP_USE_WHEEL": "1",
+        "PIP_ONLY_BINARY": ":all:",
+        "PIP_PRE": "1",
+        "PIP_USER": "0",
+    }
+
+    if not download:
+        env["PIP_NO_INDEX"] = "1"
+
+    try:
+        call_subprocess(cmd, show_stdout=False, extra_env=env, stdin=SCRIPT)
+    finally:
+        logger.indent -= 2
+        logger.end_progress()
+
+
+def create_environment(home_dir, site_packages=False, clear=False,
+                       unzip_setuptools=False,
+                       prompt=None, search_dirs=None, download=False,
+                       no_setuptools=False, no_pip=False, no_wheel=False,
+                       symlink=True):
+    """
+    Creates a new environment in ``home_dir``.
+
+    If ``site_packages`` is true, then the global ``site-packages/``
+    directory will be on the path.
+
+    If ``clear`` is true (default False) then the environment will
+    first be cleared.
+    """
+    home_dir, lib_dir, inc_dir, bin_dir = path_locations(home_dir)
+
+    py_executable = os.path.abspath(install_python(
+        home_dir, lib_dir, inc_dir, bin_dir,
+        site_packages=site_packages, clear=clear, symlink=symlink))
+
+    install_distutils(home_dir)
+
+    to_install = []
+
+    if not no_setuptools:
+        to_install.append('setuptools')
+
+    if not no_pip:
+        to_install.append('pip')
+
+    if not no_wheel:
+        to_install.append('wheel')
+
+    if to_install:
+        install_wheel(
+            to_install,
+            py_executable,
+            search_dirs,
+            download=download,
+        )
+
+    install_activate(home_dir, bin_dir, prompt)
+
+    install_python_config(home_dir, bin_dir, prompt)
+
+def is_executable_file(fpath):
+    return os.path.isfile(fpath) and os.access(fpath, os.X_OK)
+
+def path_locations(home_dir):
+    """Return the path locations for the environment (where libraries are,
+    where scripts go, etc)"""
+    home_dir = os.path.abspath(home_dir)
+    # XXX: We'd use distutils.sysconfig.get_python_inc/lib but its
+    # prefix arg is broken: http://bugs.python.org/issue3386
+    if is_win:
+        # Windows has lots of problems with executables with spaces in
+        # the name; this function will remove them (using the ~1
+        # format):
+        mkdir(home_dir)
+        if ' ' in home_dir:
+            import ctypes
+            GetShortPathName = ctypes.windll.kernel32.GetShortPathNameW
+            size = max(len(home_dir)+1, 256)
+            buf = ctypes.create_unicode_buffer(size)
+            try:
+                u = unicode
+            except NameError:
+                u = str
+            ret = GetShortPathName(u(home_dir), buf, size)
+            if not ret:
+                print('Error: the path "%s" has a space in it' % home_dir)
+                print('We could not determine the short pathname for it.')
+                print('Exiting.')
+                sys.exit(3)
+            home_dir = str(buf.value)
+        lib_dir = join(home_dir, 'Lib')
+        inc_dir = join(home_dir, 'Include')
+        bin_dir = join(home_dir, 'Scripts')
+    if is_jython:
+        lib_dir = join(home_dir, 'Lib')
+        inc_dir = join(home_dir, 'Include')
+        bin_dir = join(home_dir, 'bin')
+    elif is_pypy:
+        lib_dir = home_dir
+        inc_dir = join(home_dir, 'include')
+        bin_dir = join(home_dir, 'bin')
+    elif not is_win:
+        lib_dir = join(home_dir, 'lib', py_version)
+        inc_dir = join(home_dir, 'include', py_version + abiflags)
+        bin_dir = join(home_dir, 'bin')
+    return home_dir, lib_dir, inc_dir, bin_dir
+
+
+def change_prefix(filename, dst_prefix):
+    prefixes = [sys.prefix]
+
+    if is_darwin:
+        prefixes.extend((
+            os.path.join("/Library/Python", sys.version[:3], "site-packages"),
+            os.path.join(sys.prefix, "Extras", "lib", "python"),
+            os.path.join("~", "Library", "Python", sys.version[:3], "site-packages"),
+            # Python 2.6 no-frameworks
+            os.path.join("~", ".local", "lib","python", sys.version[:3], "site-packages"),
+            # System Python 2.7 on OSX Mountain Lion
+            os.path.join("~", "Library", "Python", sys.version[:3], "lib", "python", "site-packages")))
+
+    if hasattr(sys, 'real_prefix'):
+        prefixes.append(sys.real_prefix)
+    if hasattr(sys, 'base_prefix'):
+        prefixes.append(sys.base_prefix)
+    prefixes = list(map(os.path.expanduser, prefixes))
+    prefixes = list(map(os.path.abspath, prefixes))
+    # Check longer prefixes first so we don't split in the middle of a filename
+    prefixes = sorted(prefixes, key=len, reverse=True)
+    filename = os.path.abspath(filename)
+    # On Windows, make sure drive letter is uppercase
+    if is_win and filename[0] in 'abcdefghijklmnopqrstuvwxyz':
+        filename = filename[0].upper() + filename[1:]
+    for i, prefix in enumerate(prefixes):
+        if is_win and prefix[0] in 'abcdefghijklmnopqrstuvwxyz':
+            prefixes[i] = prefix[0].upper() + prefix[1:]
+    for src_prefix in prefixes:
+        if filename.startswith(src_prefix):
+            _, relpath = filename.split(src_prefix, 1)
+            if src_prefix != os.sep: # sys.prefix == "/"
+                assert relpath[0] == os.sep
+                relpath = relpath[1:]
+            return join(dst_prefix, relpath)
+    assert False, "Filename %s does not start with any of these prefixes: %s" % \
+        (filename, prefixes)
+
+def copy_required_modules(dst_prefix, symlink):
+    import imp
+
+    for modname in REQUIRED_MODULES:
+        if modname in sys.builtin_module_names:
+            logger.info("Ignoring built-in bootstrap module: %s" % modname)
+            continue
+        try:
+            f, filename, _ = imp.find_module(modname)
+        except ImportError:
+            logger.info("Cannot import bootstrap module: %s" % modname)
+        else:
+            if f is not None:
+                f.close()
+            # special-case custom readline.so on OS X, but not for pypy:
+            if modname == 'readline' and sys.platform == 'darwin' and not (
+                    is_pypy or filename.endswith(join('lib-dynload', 'readline.so'))):
+                dst_filename = join(dst_prefix, 'lib', 'python%s' % sys.version[:3], 'readline.so')
+            elif modname == 'readline' and sys.platform == 'win32':
+                # special-case for Windows, where readline is not a
+                # standard module, though it may have been installed in
+                # site-packages by a third-party package
+                pass
+            else:
+                dst_filename = change_prefix(filename, dst_prefix)
+            copyfile(filename, dst_filename, symlink)
+            if filename.endswith('.pyc'):
+                pyfile = filename[:-1]
+                if os.path.exists(pyfile):
+                    copyfile(pyfile, dst_filename[:-1], symlink)
+
+
+def subst_path(prefix_path, prefix, home_dir):
+    prefix_path = os.path.normpath(prefix_path)
+    prefix = os.path.normpath(prefix)
+    home_dir = os.path.normpath(home_dir)
+    if not prefix_path.startswith(prefix):
+        logger.warn('Path not in prefix %r %r', prefix_path, prefix)
+        return
+    return prefix_path.replace(prefix, home_dir, 1)
+
+
+def install_python(home_dir, lib_dir, inc_dir, bin_dir, site_packages, clear, symlink=True):
+    """Install just the base environment, no distutils patches etc"""
+    if sys.executable.startswith(bin_dir):
+        print('Please use the *system* python to run this script')
+        return
+
+    if clear:
+        rmtree(lib_dir)
+        ## FIXME: why not delete it?
+        ## Maybe it should delete everything with #!/path/to/venv/python in it
+        logger.notify('Not deleting %s', bin_dir)
+
+    if hasattr(sys, 'real_prefix'):
+        logger.notify('Using real prefix %r' % sys.real_prefix)
+        prefix = sys.real_prefix
+    elif hasattr(sys, 'base_prefix'):
+        logger.notify('Using base prefix %r' % sys.base_prefix)
+        prefix = sys.base_prefix
+    else:
+        prefix = sys.prefix
+    mkdir(lib_dir)
+    fix_lib64(lib_dir, symlink)
+    stdlib_dirs = [os.path.dirname(os.__file__)]
+    if is_win:
+        stdlib_dirs.append(join(os.path.dirname(stdlib_dirs[0]), 'DLLs'))
+    elif is_darwin:
+        stdlib_dirs.append(join(stdlib_dirs[0], 'site-packages'))
+    if hasattr(os, 'symlink'):
+        logger.info('Symlinking Python bootstrap modules')
+    else:
+        logger.info('Copying Python bootstrap modules')
+    logger.indent += 2
+    try:
+        # copy required files...
+        for stdlib_dir in stdlib_dirs:
+            if not os.path.isdir(stdlib_dir):
+                continue
+            for fn in os.listdir(stdlib_dir):
+                bn = os.path.splitext(fn)[0]
+                if fn != 'site-packages' and bn in REQUIRED_FILES:
+                    copyfile(join(stdlib_dir, fn), join(lib_dir, fn), symlink)
+        # ...and modules
+        copy_required_modules(home_dir, symlink)
+    finally:
+        logger.indent -= 2
+    mkdir(join(lib_dir, 'site-packages'))
+    import site
+    site_filename = site.__file__
+    if site_filename.endswith('.pyc') or site_filename.endswith('.pyo'):
+        site_filename = site_filename[:-1]
+    elif site_filename.endswith('$py.class'):
+        site_filename = site_filename.replace('$py.class', '.py')
+    site_filename_dst = change_prefix(site_filename, home_dir)
+    site_dir = os.path.dirname(site_filename_dst)
+    # MOZ: Copies a site.py if it exists instead of using the one hex encoded in
+    # this file. Necessary for some site.py fixes for MinGW64 version of python
+    site_py_src_path = os.path.join(os.path.dirname(__file__), 'site.py')
+    if os.path.isfile(site_py_src_path):
+        shutil.copy(site_py_src_path, site_filename_dst)
+    else:
+        writefile(site_filename_dst, SITE_PY)
+    writefile(join(site_dir, 'orig-prefix.txt'), prefix)
+    site_packages_filename = join(site_dir, 'no-global-site-packages.txt')
+    if not site_packages:
+        writefile(site_packages_filename, '')
+
+    if is_pypy or is_win:
+        stdinc_dir = join(prefix, 'include')
+    else:
+        stdinc_dir = join(prefix, 'include', py_version + abiflags)
+    if os.path.exists(stdinc_dir):
+        copyfile(stdinc_dir, inc_dir, symlink)
+    else:
+        logger.debug('No include dir %s' % stdinc_dir)
+
+    platinc_dir = distutils.sysconfig.get_python_inc(plat_specific=1)
+    if platinc_dir != stdinc_dir:
+        platinc_dest = distutils.sysconfig.get_python_inc(
+            plat_specific=1, prefix=home_dir)
+        if platinc_dir == platinc_dest:
+            # Do platinc_dest manually due to a CPython bug;
+            # not http://bugs.python.org/issue3386 but a close cousin
+            platinc_dest = subst_path(platinc_dir, prefix, home_dir)
+        if platinc_dest:
+            # PyPy's stdinc_dir and prefix are relative to the original binary
+            # (traversing virtualenvs), whereas the platinc_dir is relative to
+            # the inner virtualenv and ignores the prefix argument.
+            # This seems more evolved than designed.
+            copyfile(platinc_dir, platinc_dest, symlink)
+
+    # pypy never uses exec_prefix, just ignore it
+    if sys.exec_prefix != prefix and not is_pypy:
+        if is_win:
+            exec_dir = join(sys.exec_prefix, 'lib')
+        elif is_jython:
+            exec_dir = join(sys.exec_prefix, 'Lib')
+        else:
+            exec_dir = join(sys.exec_prefix, 'lib', py_version)
+        for fn in os.listdir(exec_dir):
+            copyfile(join(exec_dir, fn), join(lib_dir, fn), symlink)
+
+    if is_jython:
+        # Jython has either jython-dev.jar and javalib/ dir, or just
+        # jython.jar
+        for name in 'jython-dev.jar', 'javalib', 'jython.jar':
+            src = join(prefix, name)
+            if os.path.exists(src):
+                copyfile(src, join(home_dir, name), symlink)
+        # XXX: registry should always exist after Jython 2.5rc1
+        src = join(prefix, 'registry')
+        if os.path.exists(src):
+            copyfile(src, join(home_dir, 'registry'), symlink=False)
+        copyfile(join(prefix, 'cachedir'), join(home_dir, 'cachedir'),
+                 symlink=False)
+
+    mkdir(bin_dir)
+    py_executable = join(bin_dir, os.path.basename(sys.executable))
+    if 'Python.framework' in prefix:
+        # OS X framework builds cause validation to break
+        # https://github.com/pypa/virtualenv/issues/322
+        if os.environ.get('__PYVENV_LAUNCHER__'):
+            del os.environ["__PYVENV_LAUNCHER__"]
+        if re.search(r'/Python(?:-32|-64)*$', py_executable):
+            # The name of the python executable is not quite what
+            # we want, rename it.
+            py_executable = os.path.join(
+                    os.path.dirname(py_executable), 'python')
+
+    logger.notify('New %s executable in %s', expected_exe, py_executable)
+    pcbuild_dir = os.path.dirname(sys.executable)
+    pyd_pth = os.path.join(lib_dir, 'site-packages', 'virtualenv_builddir_pyd.pth')
+    if is_win and os.path.exists(os.path.join(pcbuild_dir, 'build.bat')):
+        logger.notify('Detected python running from build directory %s', pcbuild_dir)
+        logger.notify('Writing .pth file linking to build directory for *.pyd files')
+        writefile(pyd_pth, pcbuild_dir)
+    else:
+        pcbuild_dir = None
+        if os.path.exists(pyd_pth):
+            logger.info('Deleting %s (not Windows env or not build directory python)' % pyd_pth)
+            os.unlink(pyd_pth)
+
+    if sys.executable != py_executable:
+        ## FIXME: could I just hard link?
+        executable = sys.executable
+        shutil.copyfile(executable, py_executable)
+        make_exe(py_executable)
+        if is_win or is_cygwin:
+            pythonw = os.path.join(os.path.dirname(sys.executable), 'pythonw.exe')
+            if os.path.exists(pythonw):
+                logger.info('Also created pythonw.exe')
+                shutil.copyfile(pythonw, os.path.join(os.path.dirname(py_executable), 'pythonw.exe'))
+            python_d = os.path.join(os.path.dirname(sys.executable), 'python_d.exe')
+            python_d_dest = os.path.join(os.path.dirname(py_executable), 'python_d.exe')
+            if os.path.exists(python_d):
+                logger.info('Also created python_d.exe')
+                shutil.copyfile(python_d, python_d_dest)
+            elif os.path.exists(python_d_dest):
+                logger.info('Removed python_d.exe as it is no longer at the source')
+                os.unlink(python_d_dest)
+            # we need to copy the DLL to enforce that windows will load the correct one.
+            # may not exist if we are cygwin.
+            py_executable_dll = 'python%s%s.dll' % (
+                sys.version_info[0], sys.version_info[1])
+            py_executable_dll_d = 'python%s%s_d.dll' % (
+                sys.version_info[0], sys.version_info[1])
+            pythondll = os.path.join(os.path.dirname(sys.executable), py_executable_dll)
+            pythondll_d = os.path.join(os.path.dirname(sys.executable), py_executable_dll_d)
+            pythondll_d_dest = os.path.join(os.path.dirname(py_executable), py_executable_dll_d)
+            if os.path.exists(pythondll):
+                logger.info('Also created %s' % py_executable_dll)
+                shutil.copyfile(pythondll, os.path.join(os.path.dirname(py_executable), py_executable_dll))
+            if os.path.exists(pythondll_d):
+                logger.info('Also created %s' % py_executable_dll_d)
+                shutil.copyfile(pythondll_d, pythondll_d_dest)
+            elif os.path.exists(pythondll_d_dest):
+                logger.info('Removed %s as the source does not exist' % pythondll_d_dest)
+                os.unlink(pythondll_d_dest)
+        if is_pypy:
+            # make a symlink python --> pypy-c
+            python_executable = os.path.join(os.path.dirname(py_executable), 'python')
+            if sys.platform in ('win32', 'cygwin'):
+                python_executable += '.exe'
+            logger.info('Also created executable %s' % python_executable)
+            copyfile(py_executable, python_executable, symlink)
+
+            if is_win:
+                for name in ['libexpat.dll', 'libpypy.dll', 'libpypy-c.dll',
+                            'libeay32.dll', 'ssleay32.dll', 'sqlite3.dll',
+                            'tcl85.dll', 'tk85.dll']:
+                    src = join(prefix, name)
+                    if os.path.exists(src):
+                        copyfile(src, join(bin_dir, name), symlink)
+
+                for d in sys.path:
+                    if d.endswith('lib_pypy'):
+                        break
+                else:
+                    logger.fatal('Could not find lib_pypy in sys.path')
+                    raise SystemExit(3)
+                logger.info('Copying lib_pypy')
+                copyfile(d, os.path.join(home_dir, 'lib_pypy'), symlink)
+
+    if os.path.splitext(os.path.basename(py_executable))[0] != expected_exe:
+        secondary_exe = os.path.join(os.path.dirname(py_executable),
+                                     expected_exe)
+        py_executable_ext = os.path.splitext(py_executable)[1]
+        if py_executable_ext.lower() == '.exe':
+            # python2.4 gives an extension of '.4' :P
+            secondary_exe += py_executable_ext
+        if os.path.exists(secondary_exe):
+            logger.warn('Not overwriting existing %s script %s (you must use %s)'
+                        % (expected_exe, secondary_exe, py_executable))
+        else:
+            logger.notify('Also creating executable in %s' % secondary_exe)
+            shutil.copyfile(sys.executable, secondary_exe)
+            make_exe(secondary_exe)
+
+    if '.framework' in prefix:
+        if 'Python.framework' in prefix:
+            logger.debug('MacOSX Python framework detected')
+            # Make sure we use the embedded interpreter inside
+            # the framework, even if sys.executable points to
+            # the stub executable in ${sys.prefix}/bin
+            # See http://groups.google.com/group/python-virtualenv/
+            #                              browse_thread/thread/17cab2f85da75951
+            original_python = os.path.join(
+                prefix, 'Resources/Python.app/Contents/MacOS/Python')
+        if 'EPD' in prefix:
+            logger.debug('EPD framework detected')
+            original_python = os.path.join(prefix, 'bin/python')
+        shutil.copy(original_python, py_executable)
+
+        # Copy the framework's dylib into the virtual
+        # environment
+        virtual_lib = os.path.join(home_dir, '.Python')
+
+        if os.path.exists(virtual_lib):
+            os.unlink(virtual_lib)
+        copyfile(
+            os.path.join(prefix, 'Python'),
+            virtual_lib,
+            symlink)
+
+        # And then change the install_name of the copied python executable
+        try:
+            mach_o_change(py_executable,
+                          os.path.join(prefix, 'Python'),
+                          '@executable_path/../.Python')
+        except:
+            e = sys.exc_info()[1]
+            logger.warn("Could not call mach_o_change: %s. "
+                        "Trying to call install_name_tool instead." % e)
+            try:
+                call_subprocess(
+                    ["install_name_tool", "-change",
+                     os.path.join(prefix, 'Python'),
+                     '@executable_path/../.Python',
+                     py_executable])
+            except:
+                logger.fatal("Could not call install_name_tool -- you must "
+                             "have Apple's development tools installed")
+                raise
+
+    if not is_win:
+        # Ensure that 'python', 'pythonX' and 'pythonX.Y' all exist
+        py_exe_version_major = 'python%s' % sys.version_info[0]
+        py_exe_version_major_minor = 'python%s.%s' % (
+            sys.version_info[0], sys.version_info[1])
+        py_exe_no_version = 'python'
+        required_symlinks = [ py_exe_no_version, py_exe_version_major,
+                         py_exe_version_major_minor ]
+
+        py_executable_base = os.path.basename(py_executable)
+
+        if py_executable_base in required_symlinks:
+            # Don't try to symlink to yourself.
+            required_symlinks.remove(py_executable_base)
+
+        for pth in required_symlinks:
+            full_pth = join(bin_dir, pth)
+            if os.path.exists(full_pth):
+                os.unlink(full_pth)
+            if symlink:
+                os.symlink(py_executable_base, full_pth)
+            else:
+                copyfile(py_executable, full_pth, symlink)
+
+    if is_win and ' ' in py_executable:
+        # There's a bug with subprocess on Windows when using a first
+        # argument that has a space in it.  Instead we have to quote
+        # the value:
+        py_executable = '"%s"' % py_executable
+    # NOTE: keep this check as one line, cmd.exe doesn't cope with line breaks
+    cmd = [py_executable, '-c', 'import sys;out=sys.stdout;'
+        'getattr(out, "buffer", out).write(sys.prefix.encode("utf-8"))']
+    logger.info('Testing executable with %s %s "%s"' % tuple(cmd))
+    try:
+        proc = subprocess.Popen(cmd,
+                            stdout=subprocess.PIPE)
+        proc_stdout, proc_stderr = proc.communicate()
+    except OSError:
+        e = sys.exc_info()[1]
+        if e.errno == errno.EACCES:
+            logger.fatal('ERROR: The executable %s could not be run: %s' % (py_executable, e))
+            sys.exit(100)
+        else:
+            raise e
+
+    proc_stdout = proc_stdout.strip().decode("utf-8")
+    proc_stdout = os.path.normcase(os.path.abspath(proc_stdout))
+    norm_home_dir = os.path.normcase(os.path.abspath(home_dir))
+    if hasattr(norm_home_dir, 'decode'):
+        norm_home_dir = norm_home_dir.decode(sys.getfilesystemencoding())
+    if proc_stdout != norm_home_dir:
+        logger.fatal(
+            'ERROR: The executable %s is not functioning' % py_executable)
+        logger.fatal(
+            'ERROR: It thinks sys.prefix is %r (should be %r)'
+            % (proc_stdout, norm_home_dir))
+        logger.fatal(
+            'ERROR: virtualenv is not compatible with this system or executable')
+        if is_win:
+            logger.fatal(
+                'Note: some Windows users have reported this error when they '
+                'installed Python for "Only this user" or have multiple '
+                'versions of Python installed. Copying the appropriate '
+                'PythonXX.dll to the virtualenv Scripts/ directory may fix '
+                'this problem.')
+        sys.exit(100)
+    else:
+        logger.info('Got sys.prefix result: %r' % proc_stdout)
+
+    pydistutils = os.path.expanduser('~/.pydistutils.cfg')
+    if os.path.exists(pydistutils):
+        logger.notify('Please make sure you remove any previous custom paths from '
+                      'your %s file.' % pydistutils)
+    ## FIXME: really this should be calculated earlier
+
+    fix_local_scheme(home_dir, symlink)
+
+    if site_packages:
+        if os.path.exists(site_packages_filename):
+            logger.info('Deleting %s' % site_packages_filename)
+            os.unlink(site_packages_filename)
+
+    return py_executable
+
+
+def install_activate(home_dir, bin_dir, prompt=None):
+    if is_win or is_jython and os._name == 'nt':
+        files = {
+            'activate.bat': ACTIVATE_BAT,
+            'deactivate.bat': DEACTIVATE_BAT,
+            'activate.ps1': ACTIVATE_PS,
+        }
+
+        # MSYS needs paths of the form /c/path/to/file
+        drive, tail = os.path.splitdrive(home_dir.replace(os.sep, '/'))
+        home_dir_msys = (drive and "/%s%s" or "%s%s") % (drive[:1], tail)
+
+        # Run-time conditional enables (basic) Cygwin compatibility
+        home_dir_sh = ("""$(if [ "$OSTYPE" "==" "cygwin" ]; then cygpath -u '%s'; else echo '%s'; fi;)""" %
+                       (home_dir, home_dir_msys))
+        files['activate'] = ACTIVATE_SH.replace('__VIRTUAL_ENV__', home_dir_sh)
+
+    else:
+        files = {'activate': ACTIVATE_SH}
+
+        # suppling activate.fish in addition to, not instead of, the
+        # bash script support.
+        files['activate.fish'] = ACTIVATE_FISH
+
+        # same for csh/tcsh support...
+        files['activate.csh'] = ACTIVATE_CSH
+
+    files['activate_this.py'] = ACTIVATE_THIS
+
+    install_files(home_dir, bin_dir, prompt, files)
+
+def install_files(home_dir, bin_dir, prompt, files):
+    if hasattr(home_dir, 'decode'):
+        home_dir = home_dir.decode(sys.getfilesystemencoding())
+    vname = os.path.basename(home_dir)
+    for name, content in files.items():
+        content = content.replace('__VIRTUAL_PROMPT__', prompt or '')
+        content = content.replace('__VIRTUAL_WINPROMPT__', prompt or '(%s)' % vname)
+        content = content.replace('__VIRTUAL_ENV__', home_dir)
+        content = content.replace('__VIRTUAL_NAME__', vname)
+        content = content.replace('__BIN_NAME__', os.path.basename(bin_dir))
+        writefile(os.path.join(bin_dir, name), content)
+
+def install_python_config(home_dir, bin_dir, prompt=None):
+    if sys.platform == 'win32' or is_jython and os._name == 'nt':
+        files = {}
+    else:
+        files = {'python-config': PYTHON_CONFIG}
+    install_files(home_dir, bin_dir, prompt, files)
+    for name, content in files.items():
+        make_exe(os.path.join(bin_dir, name))
+
+def install_distutils(home_dir):
+    distutils_path = change_prefix(distutils.__path__[0], home_dir)
+    mkdir(distutils_path)
+    ## FIXME: maybe this prefix setting should only be put in place if
+    ## there's a local distutils.cfg with a prefix setting?
+    home_dir = os.path.abspath(home_dir)
+    ## FIXME: this is breaking things, removing for now:
+    #distutils_cfg = DISTUTILS_CFG + "\n[install]\nprefix=%s\n" % home_dir
+    writefile(os.path.join(distutils_path, '__init__.py'), DISTUTILS_INIT)
+    writefile(os.path.join(distutils_path, 'distutils.cfg'), DISTUTILS_CFG, overwrite=False)
+
+def fix_local_scheme(home_dir, symlink=True):
+    """
+    Platforms that use the "posix_local" install scheme (like Ubuntu with
+    Python 2.7) need to be given an additional "local" location, sigh.
+    """
+    try:
+        import sysconfig
+    except ImportError:
+        pass
+    else:
+        if sysconfig._get_default_scheme() == 'posix_local':
+            local_path = os.path.join(home_dir, 'local')
+            if not os.path.exists(local_path):
+                os.mkdir(local_path)
+                for subdir_name in os.listdir(home_dir):
+                    if subdir_name == 'local':
+                        continue
+                    copyfile(os.path.abspath(os.path.join(home_dir, subdir_name)), \
+                                                            os.path.join(local_path, subdir_name), symlink)
+
+def fix_lib64(lib_dir, symlink=True):
+    """
+    Some platforms (particularly Gentoo on x64) put things in lib64/pythonX.Y
+    instead of lib/pythonX.Y.  If this is such a platform we'll just create a
+    symlink so lib64 points to lib
+    """
+    # PyPy's library path scheme is not affected by this.
+    # Return early or we will die on the following assert.
+    if is_pypy:
+        logger.debug('PyPy detected, skipping lib64 symlinking')
+        return
+    # Check we have a lib64 library path
+    if not [p for p in distutils.sysconfig.get_config_vars().values()
+            if isinstance(p, basestring) and 'lib64' in p]:
+        return
+
+    logger.debug('This system uses lib64; symlinking lib64 to lib')
+
+    assert os.path.basename(lib_dir) == 'python%s' % sys.version[:3], (
+        "Unexpected python lib dir: %r" % lib_dir)
+    lib_parent = os.path.dirname(lib_dir)
+    top_level = os.path.dirname(lib_parent)
+    lib_dir = os.path.join(top_level, 'lib')
+    lib64_link = os.path.join(top_level, 'lib64')
+    assert os.path.basename(lib_parent) == 'lib', (
+        "Unexpected parent dir: %r" % lib_parent)
+    if os.path.lexists(lib64_link):
+        return
+    if symlink:
+        os.symlink('lib', lib64_link)
+    else:
+        copyfile('lib', lib64_link)
+
+def resolve_interpreter(exe):
+    """
+    If the executable given isn't an absolute path, search $PATH for the interpreter
+    """
+    # If the "executable" is a version number, get the installed executable for
+    # that version
+    python_versions = get_installed_pythons()
+    if exe in python_versions:
+        exe = python_versions[exe]
+
+    if os.path.abspath(exe) != exe:
+        paths = os.environ.get('PATH', '').split(os.pathsep)
+        for path in paths:
+            if os.path.exists(join(path, exe)):
+                exe = join(path, exe)
+                break
+    if not os.path.exists(exe):
+        logger.fatal('The executable %s (from --python=%s) does not exist' % (exe, exe))
+        raise SystemExit(3)
+    if not is_executable(exe):
+        logger.fatal('The executable %s (from --python=%s) is not executable' % (exe, exe))
+        raise SystemExit(3)
+    return exe
+
+def is_executable(exe):
+    """Checks a file is executable"""
+    return os.access(exe, os.X_OK)
+
+############################################################
+## Relocating the environment:
+
+def make_environment_relocatable(home_dir):
+    """
+    Makes the already-existing environment use relative paths, and takes out
+    the #!-based environment selection in scripts.
+    """
+    home_dir, lib_dir, inc_dir, bin_dir = path_locations(home_dir)
+    activate_this = os.path.join(bin_dir, 'activate_this.py')
+    if not os.path.exists(activate_this):
+        logger.fatal(
+            'The environment doesn\'t have a file %s -- please re-run virtualenv '
+            'on this environment to update it' % activate_this)
+    fixup_scripts(home_dir, bin_dir)
+    fixup_pth_and_egg_link(home_dir)
+    ## FIXME: need to fix up distutils.cfg
+
+OK_ABS_SCRIPTS = ['python', 'python%s' % sys.version[:3],
+                  'activate', 'activate.bat', 'activate_this.py',
+                  'activate.fish', 'activate.csh']
+
+def fixup_scripts(home_dir, bin_dir):
+    if is_win:
+        new_shebang_args = (
+            '%s /c' % os.path.normcase(os.environ.get('COMSPEC', 'cmd.exe')),
+            '', '.exe')
+    else:
+        new_shebang_args = ('/usr/bin/env', sys.version[:3], '')
+
+    # This is what we expect at the top of scripts:
+    shebang = '#!%s' % os.path.normcase(os.path.join(
+        os.path.abspath(bin_dir), 'python%s' % new_shebang_args[2]))
+    # This is what we'll put:
+    new_shebang = '#!%s python%s%s' % new_shebang_args
+
+    for filename in os.listdir(bin_dir):
+        filename = os.path.join(bin_dir, filename)
+        if not os.path.isfile(filename):
+            # ignore subdirs, e.g. .svn ones.
+            continue
+        lines = None
+        with open(filename, 'rb') as f:
+            try:
+                lines = f.read().decode('utf-8').splitlines()
+            except UnicodeDecodeError:
+                # This is probably a binary program instead
+                # of a script, so just ignore it.
+                continue
+        if not lines:
+            logger.warn('Script %s is an empty file' % filename)
+            continue
+
+        old_shebang = lines[0].strip()
+        old_shebang = old_shebang[0:2] + os.path.normcase(old_shebang[2:])
+
+        if not old_shebang.startswith(shebang):
+            if os.path.basename(filename) in OK_ABS_SCRIPTS:
+                logger.debug('Cannot make script %s relative' % filename)
+            elif lines[0].strip() == new_shebang:
+                logger.info('Script %s has already been made relative' % filename)
+            else:
+                logger.warn('Script %s cannot be made relative (it\'s not a normal script that starts with %s)'
+                            % (filename, shebang))
+            continue
+        logger.notify('Making script %s relative' % filename)
+        script = relative_script([new_shebang] + lines[1:])
+        with open(filename, 'wb') as f:
+            f.write('\n'.join(script).encode('utf-8'))
+
+
+def relative_script(lines):
+    "Return a script that'll work in a relocatable environment."
+    activate = "import os; activate_this=os.path.join(os.path.dirname(os.path.realpath(__file__)), 'activate_this.py'); exec(compile(open(activate_this).read(), activate_this, 'exec'), dict(__file__=activate_this)); del os, activate_this"
+    # Find the last future statement in the script. If we insert the activation
+    # line before a future statement, Python will raise a SyntaxError.
+    activate_at = None
+    for idx, line in reversed(list(enumerate(lines))):
+        if line.split()[:3] == ['from', '__future__', 'import']:
+            activate_at = idx + 1
+            break
+    if activate_at is None:
+        # Activate after the shebang.
+        activate_at = 1
+    return lines[:activate_at] + ['', activate, ''] + lines[activate_at:]
+
+def fixup_pth_and_egg_link(home_dir, sys_path=None):
+    """Makes .pth and .egg-link files use relative paths"""
+    home_dir = os.path.normcase(os.path.abspath(home_dir))
+    if sys_path is None:
+        sys_path = sys.path
+    for path in sys_path:
+        if not path:
+            path = '.'
+        if not os.path.isdir(path):
+            continue
+        path = os.path.normcase(os.path.abspath(path))
+        if not path.startswith(home_dir):
+            logger.debug('Skipping system (non-environment) directory %s' % path)
+            continue
+        for filename in os.listdir(path):
+            filename = os.path.join(path, filename)
+            if filename.endswith('.pth'):
+                if not os.access(filename, os.W_OK):
+                    logger.warn('Cannot write .pth file %s, skipping' % filename)
+                else:
+                    fixup_pth_file(filename)
+            if filename.endswith('.egg-link'):
+                if not os.access(filename, os.W_OK):
+                    logger.warn('Cannot write .egg-link file %s, skipping' % filename)
+                else:
+                    fixup_egg_link(filename)
+
+def fixup_pth_file(filename):
+    lines = []
+    prev_lines = []
+    with open(filename) as f:
+        prev_lines = f.readlines()
+    for line in prev_lines:
+        line = line.strip()
+        if (not line or line.startswith('#') or line.startswith('import ')
+            or os.path.abspath(line) != line):
+            lines.append(line)
+        else:
+            new_value = make_relative_path(filename, line)
+            if line != new_value:
+                logger.debug('Rewriting path %s as %s (in %s)' % (line, new_value, filename))
+            lines.append(new_value)
+    if lines == prev_lines:
+        logger.info('No changes to .pth file %s' % filename)
+        return
+    logger.notify('Making paths in .pth file %s relative' % filename)
+    with open(filename, 'w') as f:
+        f.write('\n'.join(lines) + '\n')
+
+def fixup_egg_link(filename):
+    with open(filename) as f:
+        link = f.readline().strip()
+    if os.path.abspath(link) != link:
+        logger.debug('Link in %s already relative' % filename)
+        return
+    new_link = make_relative_path(filename, link)
+    logger.notify('Rewriting link %s in %s as %s' % (link, filename, new_link))
+    with open(filename, 'w') as f:
+        f.write(new_link)
+
+def make_relative_path(source, dest, dest_is_directory=True):
+    """
+    Make a filename relative, where the filename is dest, and it is
+    being referred to from the filename source.
+
+        >>> make_relative_path('/usr/share/something/a-file.pth',
+        ...                    '/usr/share/another-place/src/Directory')
+        '../another-place/src/Directory'
+        >>> make_relative_path('/usr/share/something/a-file.pth',
+        ...                    '/home/user/src/Directory')
+        '../../../home/user/src/Directory'
+        >>> make_relative_path('/usr/share/a-file.pth', '/usr/share/')
+        './'
+    """
+    source = os.path.dirname(source)
+    if not dest_is_directory:
+        dest_filename = os.path.basename(dest)
+        dest = os.path.dirname(dest)
+    dest = os.path.normpath(os.path.abspath(dest))
+    source = os.path.normpath(os.path.abspath(source))
+    dest_parts = dest.strip(os.path.sep).split(os.path.sep)
+    source_parts = source.strip(os.path.sep).split(os.path.sep)
+    while dest_parts and source_parts and dest_parts[0] == source_parts[0]:
+        dest_parts.pop(0)
+        source_parts.pop(0)
+    full_parts = ['..']*len(source_parts) + dest_parts
+    if not dest_is_directory:
+        full_parts.append(dest_filename)
+    if not full_parts:
+        # Special case for the current directory (otherwise it'd be '')
+        return './'
+    return os.path.sep.join(full_parts)
+
+
+
+############################################################
+## Bootstrap script creation:
+
+def create_bootstrap_script(extra_text, python_version=''):
+    """
+    Creates a bootstrap script, which is like this script but with
+    extend_parser, adjust_options, and after_install hooks.
+
+    This returns a string that (written to disk of course) can be used
+    as a bootstrap script with your own customizations.  The script
+    will be the standard virtualenv.py script, with your extra text
+    added (your extra text should be Python code).
+
+    If you include these functions, they will be called:
+
+    ``extend_parser(optparse_parser)``:
+        You can add or remove options from the parser here.
+
+    ``adjust_options(options, args)``:
+        You can change options here, or change the args (if you accept
+        different kinds of arguments, be sure you modify ``args`` so it is
+        only ``[DEST_DIR]``).
+
+    ``after_install(options, home_dir)``:
+
+        After everything is installed, this function is called.  This
+        is probably the function you are most likely to use.  An
+        example would be::
+
+            def after_install(options, home_dir):
+                subprocess.call([join(home_dir, 'bin', 'easy_install'),
+                                 'MyPackage'])
+                subprocess.call([join(home_dir, 'bin', 'my-package-script'),
+                                 'setup', home_dir])
+
+        This example immediately installs a package, and runs a setup
+        script from that package.
+
+    If you provide something like ``python_version='2.5'`` then the
+    script will start with ``#!/usr/bin/env python2.5`` instead of
+    ``#!/usr/bin/env python``.  You can use this when the script must
+    be run with a particular Python version.
+    """
+    filename = __file__
+    if filename.endswith('.pyc'):
+        filename = filename[:-1]
+    with codecs.open(filename, 'r', encoding='utf-8') as f:
+        content = f.read()
+    py_exe = 'python%s' % python_version
+    content = (('#!/usr/bin/env %s\n' % py_exe)
+               + '## WARNING: This file is generated\n'
+               + content)
+    return content.replace('##EXT' 'END##', extra_text)
+
+##EXTEND##
+
+def convert(s):
+    b = base64.b64decode(s.encode('ascii'))
+    return zlib.decompress(b).decode('utf-8')
+
+##file site.py
+SITE_PY = convert("""
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+y4l7nY3WtDs2o83xj/EUOPkFn9sbBiijaak5kPdLdMPejHNkZ/L6Ws1ivN1xRptsyufq7J7Mtu09
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+xKNUYqBb1WVRwm54pO8i5jydvtTmBqgJ4G1idWNQNz2m+mpaUqyUHGZKkDlO20ryASKwEe+YhtnM
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+0X/6QNWmHzxT4nKfCov3Udlc2V+4Ztq5/WuCSQaVve9LcYISH7NC41WduokDtk+nAzl9dBqVr5xK
+FtB8B0DnRjwVsDf6S6wQ51sRwsZRu2SYHEt01Jf1Ocij3XSwN7R6IfaHyk7dskshXg43XLYqO3WP
+Q+6hHuihalPc51hgzNIcqicV3xFkPs4UdMGX53zgGbre9sPX28uXR/ZwAfkdXzuKhLLJRo5hv3Sy
+MXdeKul0J2Ypp5Suh3s1JySsW1w5UNknGNrbdEpSBvY/Js+BIY289/0hM9PDu3p/1MbUst4RTEmM
+n6kJTcsp4tG42yeT7nQbtdUFwgVJjwDSUYEAC8F0dKOTILrlLO/xC70bnNd0Ha97whQ6UkHJYj5H
+cA/j+zX4tbtTIfGjujOKpj83aHOgXnIQbvYduNXEC4UMm4T21Bs+GHABuCa7v//LR/TvpjHa7oe7
+/Grb6lVvHSD7spj5iplBLRKZxxEYGdCbY9LWWC5hBB2voWno6DJUMzfkC3T8KJsWL9umDQY5szPt
+AVijEPwfucjncQ==
+""")
+
+##file activate.sh
+ACTIVATE_SH = convert("""
+eJytVd9v2kAMfs9fYQLq2m4MscdNVKMqEkgtVIQxbeuUHolpTgsXdHehpT/+9/mSEBJS2MOaB0ji
+z77P9menDpOAK5jzEGERKw0zhFihD/dcB2CrKJYewoyLFvM0XzGNNpzOZbSAGVPBqVWHdRSDx4SI
+NMhYANfgc4meDteW5ePGC45P4MkCumKhUENzDsu1H3lw1vJx1RJxGMKns6O2lWDqINGgotAHFCsu
+I7FAoWHFJGezEFWGqsEvaD5C42naHb93X+A3+elYCgVaxgh8DmQAys9HL2SS0mIaWBgm7mTN/O3G
+kzu6vHCng/HkW/fSve5O+hTOpnhfQAcoEry5jKVjNypoO0fgwzKSOgHm79KUK06Jfc7/RebHpD8a
+9kdXvT2UcnuFWG6p0stNB0mWUUQ1q3uiGRVEMfXHR03dTuQATPjwqIIPcB9wL4CArRAY/ZHJixYL
+Y9YBtcAoLQtFevOoI9QaHcEdMSAB0d08kuZhyUiSmav6CPCdVBnFOjNrLu6yMCWgKRA0TInBC5i4
+QwX3JG/mm581GKnSsSSxJTFHf9MAKr8w5T/vOv1mUurn5/zlT6fvTntjZzAaNl9rQ5JkU5KIc0GX
+inagwU57T2eddqWlTrvaS6d9sImZeUMkhWysveF0m37NcGub9Dpgi0j4qGiOzATjDr06OBjOYQOo
+7RBoGtNm9Denv1i0LVI7lxJDXLHSSBeWRflsyyqw7diuW3h0XdvK6lBMyaoMG1UyHdTsoYBuue75
+YOgOu1c91/2cwYpznPPeDoQpGL2xSm09NKp7BsvQ2hnT3aMs07lUnskpxewvBk73/LLnXo9HV9eT
+ijB3hWBO2ygoiWg/bKuZxqCCQq0DD3vkWIVvI2KosIw+vqW1gIItEG5KJb+xb09g65ktwYKgTc51
+uGJ/EFQs0ayEWLCQM5V9N4g+1+8UbXOJzF8bqhKtIqIwicWvzNFROZJlpfD8A7Vc044R0FxkcezG
+VzsV75usvTdYef+57v5n1b225qhXfwEmxHEs
+""")
+
+##file activate.fish
+ACTIVATE_FISH = convert("""
+eJyFVVFv0zAQfs+vONJO3RDNxCsSQoMVrdK2Vl03CSHkesllMXLsYDvZivjx2GmTOG0YfWhV+7u7
+73z33Y1gnTENKeMIeakNPCKUGhP7xcQTbCJ4ZOKcxoZV1GCUMp1t4O0zMxkTQEGVQjicO4dTyIwp
+Ppyfu386Q86jWOZwBhq1ZlK8jYIRXEoQ0jhDYAYSpjA2fBsFQVoKG0UKSLAJB9MEJrMXi6uYMiXl
+KCrIZYJARQIKTakEGAkmQ+tU5ZSDRTAlRY7CRJMA7GdkgRoNSJ74t1BRxegjR12jWAoGbfpTAeGY
+LK4vycN8tb6/uCbLi/VVWGPcx3maPr2AO4VjYB+HMAxAkQT/i/ptfbW4vVrczAZit3eHDNqL13n0
+Ya+w+Tq/uyLL1eJmuSaLh9lqNb/0+IzgznqnAjAvzBa4jG0BNmNXfdJUkxTU2I6xRaKcy+e6VApz
+WVmoTGFTgwslrYdN03ONrbbMN1E/FQ7H7gOP0UxRjV67TPRBjF3naCMV1mSkYk9MUN7F8cODZzsE
+iIHYviIe6n8WeGQxWKuhl+9Xa49uijq7fehXMRxT9VR9f/8jhDcfYSKkSOyxKp22cNIrIk+nzd2b
+Yc7FNpHx8FUn15ZfzXEE98JxZEohx4r6kosCT+R9ZkHQtLmXGYSEeH8JCTvYkcRgXAutp9Rw7Jmf
+E/J5fktuL25m1tMe3vLdjDt9bNxr2sMo2P3C9BccqGeYhqfQITz6XurXaqdf99LF1mT2YJrvzqCu
+5w7dKvV3PzNyOb+7+Hw923dOuB+AX2SxrZs9Lm0xbCH6kmhjUyuWw+7cC7DX8367H3VzDz6oBtty
+tMIeobE21JT6HaRS+TbaoqhbE7rgdGs3xtE4cOF3xo0TfxwsdyRlhUoxuzes18r+Jp88zDx1G+kd
+/HTrr1BY2CeuyfnbQtAcu9j+pOw6cy9X0k3IuoyKCZPC5ESf6MkgHE5tLiSW3Oa+W2NnrQfkGv/h
+7tR5PNFnMBlw4B9NJTxnzKA9fLTT0aXSb5vw7FUKzcTZPddqYHi2T9/axJmEEN3qHncVCuEPaFmq
+uEtpcBj2Z1wjrqGReJBHrY6/go21NA==
+""")
+
+##file activate.csh
+ACTIVATE_CSH = convert("""
+eJx1U2FP2zAQ/e5f8TAV3Soo+0zXbYUiDQkKQgVp2ibjJNfFUuIg22nVf885SVFLO3+I7Lt3fr6X
+d8eY58ZjYQpCWfuAhFB7yrAyIYf0Ve1SQmLsuU6DWepAw9TnEoOFq0rwdjAUx/hV1Ui1tVWAqy1M
+QGYcpaFYx+yVI67LkKwx1UuTEaYGl4X2Bl+zJpAlP/6V2hTDtCq/DYXQhdEeGW040Q/Eb+t9V/e3
+U/V88zh/mtyqh8n8J47G+IKTE3gKZJdoYrK3h5MRU1tGYS83gqNc+3yEgyyP93cP820evHLvr2H8
+kaYB/peoyY7aVHzpJnE9e+6I5Z+ji4GMTNJWNuOQq6MA1N25p8pW9HWdVWlfsNpPDbdxjgpaahuw
+1M7opCA/FFu1uwxC7L8KUqmto1KyQe3rx0I0Eovdf7BVe67U5c1MzSZ310pddGheZoFPWyytRkzU
+aCA/I+RkBXhFXr5aWV0SxjhUI6jwdAj8kmhPzX7nTfJFkM3MImp2VdVFFq1vLHSU5szYQK4Ri+Jd
+xlW2JBtOGcyYVW7SnB3v6RS91g3gKapZ0oWxbHVteYIIq3iv7QeuSrUj6KSqQ+yqsxDj1ivNQxKF
+YON10Q+NH/ARS95i5Tuqq2Vxfvc23f/FO6zrtXXmJr+ZtMY9/A15ZXFWtmch2rEQ4g1ryVHH
+""")
+
+##file activate.bat
+ACTIVATE_BAT = convert("""
+eJx9Ul9LhEAQfxf8DoOclI/dYyFkaCmcq4gZQTBUrincuZFbff12T133TM+nnd35/Zvxlr7XDFhV
+mUZHOVhFlOWP3g4DUriIWoVomYZpNBWUtGpaWgImO191pFkSpzlcmgaI70jVX7n2Qp8tuByg+46O
+CMHbMq64T+nmlJt082D1T44muCDk2prgEHF4mdI9RaS/QwSt3zSyIAaftRccvqVTBziD1x/WlPD5
+xd729NDBb8Nr4DU9QNMKsJeH9pkhPedhQsIkDuCDCa6A+NF9IevVFAohkqizdHetg/tkWvPoftWJ
+MCqnOxv7/x7Np6yv9P2Ker5dmX8yNyCkkWnbZy3N5LarczlqL8htx2EM9rQ/2H5BvIsIEi8OEG8U
++g8CsNTr
+""")
+
+##file deactivate.bat
+DEACTIVATE_BAT = convert("""
+eJyFkN0KgkAUhO8F32EQpHqFQEjQUPAPMaErqVxzId3IrV6/XST/UDx3c86c4WMO5FYysKJQFVVp
+CEfqxsnJ9DI7SA25i20fFqs3HO+GYLsDZ7h8GM3xfLHrg1QNvpSX4CWpQGvokZk4uqrQAjXjyElB
+a5IjCz0r+2dHcehHCe5MZNmB5R7TdqMqECMptHZh6DN/utb7Zs6Cej8OXYE5J04YOKFvD4GkHuJ0
+pilSd1jG6n87tDZ+BUwUOepI6CGSkFMYWf0ihvT33Qj1A+tCkSI=
+""")
+
+##file activate.ps1
+ACTIVATE_PS = convert("""
+eJylWdmO41hyfW+g/0FTU7C7IXeJIqmtB/3AnZRIStxF2kaBm7gv4ipyMF/mB3+Sf8GXVGVl1tLT
+43ECSqR4b5wbETeWE8z/+a///vNCDaN6cYtSf5G1dbNw/IVXNIu6aCvX9xa3qsgWl0IJ/7IYinbh
+2nkOVqs2X0TNjz/8eeFFle826fBhQRaLBkD9uviw+LCy3Sbq7Mb/UNbrH3+YNtLcVaB+Xbipb+eL
+tly0eVsD/M6u6g8//vC+dquobH5VWU75eMFUdvHb4n02RHlXuHYTFfmHbHCLLLNz70NpN+GrBI4p
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+rKQDxR6N/rffXv+lROXet/9Q+l9I4D1U
+""")
+
+##file distutils-init.py
+DISTUTILS_INIT = convert("""
+eJytV1uL4zYUfvevOE0ottuMW9q3gVDa3aUMXXbLMlDKMBiNrSTqOJKRlMxkf33PkXyRbGe7Dw2E
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+kzp1/+7hGBuY4pk0XD/0Ao/oTe/XGrfyM773aB7iUhgkpy+dwAMalxMP0DrBcsVw/6p25+/hobP9
+GBknrWExDhLJ1bwt1NcCNblaFbMKCyvmX0PeRaQ=
+""")
+
+##file distutils.cfg
+DISTUTILS_CFG = convert("""
+eJxNj00KwkAMhfc9xYNuxe4Ft57AjYiUtDO1wXSmNJnK3N5pdSEEAu8nH6lxHVlRhtDHMPATA4uH
+xJ4EFmGbvfJiicSHFRzUSISMY6hq3GLCRLnIvSTnEefN0FIjw5tF0Hkk9Q5dRunBsVoyFi24aaLg
+9FDOlL0FPGluf4QjcInLlxd6f6rqkgPu/5nHLg0cXCscXoozRrP51DRT3j9QNl99AP53T2Q=
+""")
+
+##file activate_this.py
+ACTIVATE_THIS = convert("""
+eJyNU01v2zAMvetXEB4K21jnDOstQA4dMGCHbeihlyEIDMWmE62yJEiKE//7kXKdpEWLzYBt8evx
+kRSzLPs6wiEoswM8YdMpjUXcq1Dz6RZa1cSiTkJdr86GsoTRHuCotBayiWqQEYGtMCgfD1KjGYBe
+5a3p0cRKiEe2NtLAFikftnDco0ko/SFEVgEZ8aRCZDIPY9xbA8pE9M4jfW/B2CjiHq9zbJVZuOQq
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+yZ8jq1Z5Q1UXsyy3gf9nbjTEj7NzQMfCJa/YSmrQ+2D/BqfiOi6sclrGzvoeVivIj8rcfcmnIQRF
+7XCyeZI7DFe5/lhlCs5PRf5QW66VXT/NrlQ46oD/D6InkOmi3IQcbhKxAX2g4a+Xd5s3UtCtG2py
+m8eg6WYWqR6SL5OjKMGfSrYt/6kxxQtOpeAgj1LXBNmpE2ElmCSIy5H0zFd8gJ924HWijWhb2hRC
+6wNEm1QdDZtuSZcEprIUBo/XRNcbQe1OUbQ/r3hPTaPJJDNtFLu8KHV5XoNr3Eo6h6YtOKw8e8yw
+VF5PnJ+ts3a9/Mz38RpG/AUSzYUW
+""")
+
+##file python-config
+PYTHON_CONFIG = convert("""
+eJyNVV1P2zAUfc+v8ODBiSABxlulTipbO6p1LWqBgVhlhcZpPYUkctzSivHfd6+dpGloGH2Ja/ue
+e+65Hz78xNhtf3x90xmw7vCWsRPGLvpDNuz87MKfdKMWSWxZ4ilNpCLZJiuWc66SVFUOZkkcirll
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+PvDCRD75yi41QitfzlcPp1OI7i/1/iQitqnr0iMgQ+A6wa+IKwwdxyk9IiXNAzgquTFU8NIxAVjM
+osm1Zz526e+shQ4hKRVci69nPC3Kw4NQEmkQ65E7OodxorSvxjvpBjQHDmWFIQ1mlmzlS5vedseT
+/mgIEsMJ7Lxz2bLAF9M5xeLEhdbHxpWOw0GdkJApMVBRF1y+a0z3c9WZPAXGFcFrJgCIB+024uad
+0CrzmEoRa3Ub4swNIHPGf7QDV+2uj2OiFWsChgCwjKqN6rp5izpbH6Wc1O1TclQTP/XVwi6anTr1
+1sbubjZLI1+VptPSdCfwnFBrB1jvebrTA9uUhU2/9gad7xPqeFkaQcnnLbCViZK8d7R1kxzFrIJV
+8EaLYmKYpvGVkig+3C5HCXbM1jGCGekiM2pRCVPyRyXYdPf6kcbWEQ36F5V4Gq9N7icNNw+JHwRE
+LTgxRXACpvnQv/PuT0xCCAywY/K4hE6Now2qDwaSE5FB+1agsoUveYDepS83qFcF1NufvULD3fTl
+g6Hgf7WBt6lzMeiyyWVn3P1WVbwaczHmTzE9A5SyItTVgFYyvs/L/fXlaNgbw8v3azT+0eikVlWD
+/vBHbzQumP23uBCjsYdrL9OWARwxs/nuLOzeXbPJTa/Xv6sUmQir5pC1YRLz3eA+CD8Z0XpcW8v9
+MZWF36ryyXXf3yBIz6nzqz8Muyz0m5Qj7OexfYo/Ph3LqvkHUg7AuA==
+""")
+
+MH_MAGIC = 0xfeedface
+MH_CIGAM = 0xcefaedfe
+MH_MAGIC_64 = 0xfeedfacf
+MH_CIGAM_64 = 0xcffaedfe
+FAT_MAGIC = 0xcafebabe
+BIG_ENDIAN = '>'
+LITTLE_ENDIAN = '<'
+LC_LOAD_DYLIB = 0xc
+maxint = majver == 3 and getattr(sys, 'maxsize') or getattr(sys, 'maxint')
+
+
+class fileview(object):
+    """
+    A proxy for file-like objects that exposes a given view of a file.
+    Modified from macholib.
+    """
+
+    def __init__(self, fileobj, start=0, size=maxint):
+        if isinstance(fileobj, fileview):
+            self._fileobj = fileobj._fileobj
+        else:
+            self._fileobj = fileobj
+        self._start = start
+        self._end = start + size
+        self._pos = 0
+
+    def __repr__(self):
+        return '<fileview [%d, %d] %r>' % (
+            self._start, self._end, self._fileobj)
+
+    def tell(self):
+        return self._pos
+
+    def _checkwindow(self, seekto, op):
+        if not (self._start <= seekto <= self._end):
+            raise IOError("%s to offset %d is outside window [%d, %d]" % (
+                op, seekto, self._start, self._end))
+
+    def seek(self, offset, whence=0):
+        seekto = offset
+        if whence == os.SEEK_SET:
+            seekto += self._start
+        elif whence == os.SEEK_CUR:
+            seekto += self._start + self._pos
+        elif whence == os.SEEK_END:
+            seekto += self._end
+        else:
+            raise IOError("Invalid whence argument to seek: %r" % (whence,))
+        self._checkwindow(seekto, 'seek')
+        self._fileobj.seek(seekto)
+        self._pos = seekto - self._start
+
+    def write(self, bytes):
+        here = self._start + self._pos
+        self._checkwindow(here, 'write')
+        self._checkwindow(here + len(bytes), 'write')
+        self._fileobj.seek(here, os.SEEK_SET)
+        self._fileobj.write(bytes)
+        self._pos += len(bytes)
+
+    def read(self, size=maxint):
+        assert size >= 0
+        here = self._start + self._pos
+        self._checkwindow(here, 'read')
+        size = min(size, self._end - here)
+        self._fileobj.seek(here, os.SEEK_SET)
+        bytes = self._fileobj.read(size)
+        self._pos += len(bytes)
+        return bytes
+
+
+def read_data(file, endian, num=1):
+    """
+    Read a given number of 32-bits unsigned integers from the given file
+    with the given endianness.
+    """
+    res = struct.unpack(endian + 'L' * num, file.read(num * 4))
+    if len(res) == 1:
+        return res[0]
+    return res
+
+
+def mach_o_change(path, what, value):
+    """
+    Replace a given name (what) in any LC_LOAD_DYLIB command found in
+    the given binary with a new name (value), provided it's shorter.
+    """
+
+    def do_macho(file, bits, endian):
+        # Read Mach-O header (the magic number is assumed read by the caller)
+        cputype, cpusubtype, filetype, ncmds, sizeofcmds, flags = read_data(file, endian, 6)
+        # 64-bits header has one more field.
+        if bits == 64:
+            read_data(file, endian)
+        # The header is followed by ncmds commands
+        for n in range(ncmds):
+            where = file.tell()
+            # Read command header
+            cmd, cmdsize = read_data(file, endian, 2)
+            if cmd == LC_LOAD_DYLIB:
+                # The first data field in LC_LOAD_DYLIB commands is the
+                # offset of the name, starting from the beginning of the
+                # command.
+                name_offset = read_data(file, endian)
+                file.seek(where + name_offset, os.SEEK_SET)
+                # Read the NUL terminated string
+                load = file.read(cmdsize - name_offset).decode()
+                load = load[:load.index('\0')]
+                # If the string is what is being replaced, overwrite it.
+                if load == what:
+                    file.seek(where + name_offset, os.SEEK_SET)
+                    file.write(value.encode() + '\0'.encode())
+            # Seek to the next command
+            file.seek(where + cmdsize, os.SEEK_SET)
+
+    def do_file(file, offset=0, size=maxint):
+        file = fileview(file, offset, size)
+        # Read magic number
+        magic = read_data(file, BIG_ENDIAN)
+        if magic == FAT_MAGIC:
+            # Fat binaries contain nfat_arch Mach-O binaries
+            nfat_arch = read_data(file, BIG_ENDIAN)
+            for n in range(nfat_arch):
+                # Read arch header
+                cputype, cpusubtype, offset, size, align = read_data(file, BIG_ENDIAN, 5)
+                do_file(file, offset, size)
+        elif magic == MH_MAGIC:
+            do_macho(file, 32, BIG_ENDIAN)
+        elif magic == MH_CIGAM:
+            do_macho(file, 32, LITTLE_ENDIAN)
+        elif magic == MH_MAGIC_64:
+            do_macho(file, 64, BIG_ENDIAN)
+        elif magic == MH_CIGAM_64:
+            do_macho(file, 64, LITTLE_ENDIAN)
+
+    assert(len(what) >= len(value))
+
+    with open(path, 'r+b') as f:
+        do_file(f)
+
+
+if __name__ == '__main__':
+    main()
+
+# TODO:
+# Copy python.exe.manifest
+# Monkeypatch distutils.sysconfig
diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate.bat b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate.bat
new file mode 100644
index 000000000..529b9733c
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate.bat
@@ -0,0 +1,30 @@
+@echo off

+set "VIRTUAL_ENV=__VIRTUAL_ENV__"

+

+if defined _OLD_VIRTUAL_PROMPT (

+    set "PROMPT=%_OLD_VIRTUAL_PROMPT%"

+) else (

+    if not defined PROMPT (

+        set "PROMPT=$P$G"

+    )

+    set "_OLD_VIRTUAL_PROMPT=%PROMPT%"

+)

+set "PROMPT=__VIRTUAL_WINPROMPT__ %PROMPT%"

+

+REM Don't use () to avoid problems with them in %PATH%

+if defined _OLD_VIRTUAL_PYTHONHOME goto ENDIFVHOME

+    set "_OLD_VIRTUAL_PYTHONHOME=%PYTHONHOME%"

+:ENDIFVHOME

+

+set PYTHONHOME=

+

+REM if defined _OLD_VIRTUAL_PATH (

+if not defined _OLD_VIRTUAL_PATH goto ENDIFVPATH1

+    set "PATH=%_OLD_VIRTUAL_PATH%"

+:ENDIFVPATH1

+REM ) else (

+if defined _OLD_VIRTUAL_PATH goto ENDIFVPATH2

+    set "_OLD_VIRTUAL_PATH=%PATH%"

+:ENDIFVPATH2

+

+set "PATH=%VIRTUAL_ENV%\__BIN_NAME__;%PATH%"

diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate.csh b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate.csh
new file mode 100644
index 000000000..864865b17
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate.csh
@@ -0,0 +1,36 @@
+# This file must be used with "source bin/activate.csh" *from csh*.
+# You cannot run it directly.
+# Created by Davide Di Blasi <davidedb@gmail.com>.
+
+alias deactivate 'test $?_OLD_VIRTUAL_PATH != 0 && setenv PATH "$_OLD_VIRTUAL_PATH" && unset _OLD_VIRTUAL_PATH; rehash; test $?_OLD_VIRTUAL_PROMPT != 0 && set prompt="$_OLD_VIRTUAL_PROMPT" && unset _OLD_VIRTUAL_PROMPT; unsetenv VIRTUAL_ENV; test "\!:*" != "nondestructive" && unalias deactivate && unalias pydoc'
+
+# Unset irrelevant variables.
+deactivate nondestructive
+
+setenv VIRTUAL_ENV "__VIRTUAL_ENV__"
+
+set _OLD_VIRTUAL_PATH="$PATH"
+setenv PATH "$VIRTUAL_ENV/__BIN_NAME__:$PATH"
+
+
+
+if ("__VIRTUAL_PROMPT__" != "") then
+    set env_name = "__VIRTUAL_PROMPT__"
+else
+    set env_name = `basename "$VIRTUAL_ENV"`
+endif
+
+# Could be in a non-interactive environment,
+# in which case, $prompt is undefined and we wouldn't
+# care about the prompt anyway.
+if ( $?prompt ) then
+    set _OLD_VIRTUAL_PROMPT="$prompt"
+    set prompt = "[$env_name] $prompt"
+endif
+
+unset env_name
+
+alias pydoc python -m pydoc
+
+rehash
+
diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate.fish b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate.fish
new file mode 100644
index 000000000..f3d1797a3
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate.fish
@@ -0,0 +1,76 @@
+# This file must be used using `. bin/activate.fish` *within a running fish ( http://fishshell.com ) session*.
+# Do not run it directly.
+
+function deactivate -d 'Exit virtualenv mode and return to the normal environment.'
+    # reset old environment variables
+    if test -n "$_OLD_VIRTUAL_PATH"
+        set -gx PATH $_OLD_VIRTUAL_PATH
+        set -e _OLD_VIRTUAL_PATH
+    end
+
+    if test -n "$_OLD_VIRTUAL_PYTHONHOME"
+        set -gx PYTHONHOME $_OLD_VIRTUAL_PYTHONHOME
+        set -e _OLD_VIRTUAL_PYTHONHOME
+    end
+
+    if test -n "$_OLD_FISH_PROMPT_OVERRIDE"
+        # Set an empty local `$fish_function_path` to allow the removal of `fish_prompt` using `functions -e`.
+        set -l fish_function_path
+
+        # Erase virtualenv's `fish_prompt` and restore the original.
+        functions -e fish_prompt
+        functions -c _old_fish_prompt fish_prompt
+        functions -e _old_fish_prompt
+        set -e _OLD_FISH_PROMPT_OVERRIDE
+    end
+
+    set -e VIRTUAL_ENV
+
+    if test "$argv[1]" != 'nondestructive'
+        # Self-destruct!
+        functions -e pydoc
+        functions -e deactivate
+    end
+end
+
+# Unset irrelevant variables.
+deactivate nondestructive
+
+set -gx VIRTUAL_ENV "__VIRTUAL_ENV__"
+
+set -gx _OLD_VIRTUAL_PATH $PATH
+set -gx PATH "$VIRTUAL_ENV/__BIN_NAME__" $PATH
+
+# Unset `$PYTHONHOME` if set.
+if set -q PYTHONHOME
+    set -gx _OLD_VIRTUAL_PYTHONHOME $PYTHONHOME
+    set -e PYTHONHOME
+end
+
+function pydoc
+    python -m pydoc $argv
+end
+
+if test -z "$VIRTUAL_ENV_DISABLE_PROMPT"
+    # Copy the current `fish_prompt` function as `_old_fish_prompt`.
+    functions -c fish_prompt _old_fish_prompt
+
+    function fish_prompt
+        # Save the current $status, for fish_prompts that display it.
+        set -l old_status $status
+
+        # Prompt override provided?
+        # If not, just prepend the environment name.
+        if test -n "__VIRTUAL_PROMPT__"
+            printf '%s%s' "__VIRTUAL_PROMPT__" (set_color normal)
+        else
+            printf '%s(%s%s%s) ' (set_color normal) (set_color -o white) (basename "$VIRTUAL_ENV") (set_color normal)
+        end
+
+        # Restore the original $status
+        echo "exit $old_status" | source
+        _old_fish_prompt
+    end
+
+    set -gx _OLD_FISH_PROMPT_OVERRIDE "$VIRTUAL_ENV"
+end
diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate.ps1 b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate.ps1
new file mode 100644
index 000000000..0f4adf19f
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate.ps1
@@ -0,0 +1,150 @@
+# This file must be dot sourced from PoSh; you cannot run it

+# directly. Do this: . ./activate.ps1

+

+# FIXME: clean up unused vars.

+$script:THIS_PATH = $myinvocation.mycommand.path

+$script:BASE_DIR = split-path (resolve-path "$THIS_PATH/..") -Parent

+$script:DIR_NAME = split-path $BASE_DIR -Leaf

+

+function global:deactivate ( [switch] $NonDestructive ){

+

+    if ( test-path variable:_OLD_VIRTUAL_PATH ) {

+        $env:PATH = $variable:_OLD_VIRTUAL_PATH

+        remove-variable "_OLD_VIRTUAL_PATH" -scope global

+    }

+

+    if ( test-path function:_old_virtual_prompt ) {

+        $function:prompt = $function:_old_virtual_prompt

+        remove-item function:\_old_virtual_prompt

+    }

+

+    if ($env:VIRTUAL_ENV) {

+        $old_env = split-path $env:VIRTUAL_ENV -leaf

+        remove-item env:VIRTUAL_ENV -erroraction silentlycontinue

+    }

+

+    if ( !$NonDestructive ) {

+        # Self destruct!

+        remove-item function:deactivate

+    }

+}

+

+# unset irrelevant variables

+deactivate -nondestructive

+

+$VIRTUAL_ENV = $BASE_DIR

+$env:VIRTUAL_ENV = $VIRTUAL_ENV

+

+$global:_OLD_VIRTUAL_PATH = $env:PATH

+$env:PATH = "$env:VIRTUAL_ENV/Scripts;" + $env:PATH

+if (! $env:VIRTUAL_ENV_DISABLE_PROMPT) {

+    function global:_old_virtual_prompt { "" }

+    $function:_old_virtual_prompt = $function:prompt

+    function global:prompt {

+        # Add a prefix to the current prompt, but don't discard it.

+        write-host "($(split-path $env:VIRTUAL_ENV -leaf)) " -nonewline

+        & $function:_old_virtual_prompt

+    }

+}

+

+# SIG # Begin signature block

+# MIISeAYJKoZIhvcNAQcCoIISaTCCEmUCAQExCzAJBgUrDgMCGgUAMGkGCisGAQQB

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+# aW1pdGF0aW9ucyIgb2YgdGhlIFN0YXJ0Q29tIENBIHBvbGljeS4wNgYDVR0fBC8w

+# LTAroCmgJ4YlaHR0cDovL2NybC5zdGFydHNzbC5jb20vY3J0YzItY3JsLmNybDCB

+# iQYIKwYBBQUHAQEEfTB7MDcGCCsGAQUFBzABhitodHRwOi8vb2NzcC5zdGFydHNz

+# bC5jb20vc3ViL2NsYXNzMi9jb2RlL2NhMEAGCCsGAQUFBzAChjRodHRwOi8vYWlh

+# LnN0YXJ0c3NsLmNvbS9jZXJ0cy9zdWIuY2xhc3MyLmNvZGUuY2EuY3J0MCMGA1Ud

+# EgQcMBqGGGh0dHA6Ly93d3cuc3RhcnRzc2wuY29tLzANBgkqhkiG9w0BAQUFAAOC

+# AQEAhrzEV6zwoEtKjnFRhCsjwiPykVpo5Eiye77Ve801rQDiRKgSCCiW6g3HqedL

+# OtaSs65Sj2pm3Viea4KR0TECLcbCTgsdaHqw2x1yXwWBQWZEaV6EB05lIwfr94P1

+# SFpV43zkuc+bbmA3+CRK45LOcCNH5Tqq7VGTCAK5iM7tvHwFlbQRl+I6VEL2mjpF

+# NsuRjDOVrv/9qw/a22YJ9R7Y1D0vUSs3IqZx2KMUaYDP7H2mSRxJO2nADQZBtriF

+# gTyfD3lYV12MlIi5CQwe3QC6DrrfSMP33i5Wa/OFJiQ27WPxmScYVhiqozpImFT4

+# PU9goiBv9RKXdgTmZE1PN0NQ5jGCAzUwggMxAgEBMIGTMIGMMQswCQYDVQQGEwJJ

+# TDEWMBQGA1UEChMNU3RhcnRDb20gTHRkLjErMCkGA1UECxMiU2VjdXJlIERpZ2l0

+# YWwgQ2VydGlmaWNhdGUgU2lnbmluZzE4MDYGA1UEAxMvU3RhcnRDb20gQ2xhc3Mg

+# MiBQcmltYXJ5IEludGVybWVkaWF0ZSBPYmplY3QgQ0ECAgS4MAkGBSsOAwIaBQCg

+# eDAYBgorBgEEAYI3AgEMMQowCKACgAChAoAAMBkGCSqGSIb3DQEJAzEMBgorBgEE

+# AYI3AgEEMBwGCisGAQQBgjcCAQsxDjAMBgorBgEEAYI3AgEVMCMGCSqGSIb3DQEJ

+# BDEWBBRVGw0FDSiaIi38dWteRUAg/9Pr6DANBgkqhkiG9w0BAQEFAASCAgCInvOZ

+# FdaNFzbf6trmFDZKMojyx3UjKMCqNjHVBbuKY0qXwFC/ElYDV1ShJ2CBZbdurydO

+# OQ6cIQ0KREOCwmX/xB49IlLHHUxNhEkVv7HGU3EKAFf9IBt9Yr7jikiR9cjIsfHK

+# 4cjkoKJL7g28yEpLLkHt1eo37f1Ga9lDWEa5Zq3U5yX+IwXhrUBm1h8Xr033FhTR

+# VEpuSz6LHtbrL/zgJnCzJ2ahjtJoYevdcWiNXffosJHFaSfYDDbiNsPRDH/1avmb

+# 5j/7BhP8BcBaR6Fp8tFbNGIcWHHGcjqLMnTc4w13b7b4pDhypqElBa4+lCmwdvv9

+# GydYtRgPz8GHeoBoKj30YBlMzRIfFYaIFGIC4Ai3UEXkuH9TxYohVbGm/W0Kl4Lb

+# RJ1FwiVcLcTOJdgNId2vQvKc+jtNrjcg5SP9h2v/C4aTx8tyc6tE3TOPh2f9b8DL

+# S+SbVArJpuJqrPTxDDoO1QNjTgLcdVYeZDE+r/NjaGZ6cMSd8db3EaG3ijD/0bud

+# SItbm/OlNVbQOFRR76D+ZNgPcU5iNZ3bmvQQIg6aSB9MHUpIE/SeCkNl9YeVk1/1

+# GFULgNMRmIYP4KLvu9ylh5Gu3hvD5VNhH6+FlXANwFy07uXks5uF8mfZVxVCnodG

+# xkNCx+6PsrA5Z7WP4pXcmYnMn97npP/Q9EHJWw==

+# SIG # End signature block

diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate.sh b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate.sh
new file mode 100644
index 000000000..477b7eca2
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate.sh
@@ -0,0 +1,78 @@
+# This file must be used with "source bin/activate" *from bash*
+# you cannot run it directly
+
+deactivate () {
+    unset -f pydoc >/dev/null 2>&1
+
+    # reset old environment variables
+    # ! [ -z ${VAR+_} ] returns true if VAR is declared at all
+    if ! [ -z "${_OLD_VIRTUAL_PATH+_}" ] ; then
+        PATH="$_OLD_VIRTUAL_PATH"
+        export PATH
+        unset _OLD_VIRTUAL_PATH
+    fi
+    if ! [ -z "${_OLD_VIRTUAL_PYTHONHOME+_}" ] ; then
+        PYTHONHOME="$_OLD_VIRTUAL_PYTHONHOME"
+        export PYTHONHOME
+        unset _OLD_VIRTUAL_PYTHONHOME
+    fi
+
+    # This should detect bash and zsh, which have a hash command that must
+    # be called to get it to forget past commands.  Without forgetting
+    # past commands the $PATH changes we made may not be respected
+    if [ -n "${BASH-}" ] || [ -n "${ZSH_VERSION-}" ] ; then
+        hash -r 2>/dev/null
+    fi
+
+    if ! [ -z "${_OLD_VIRTUAL_PS1+_}" ] ; then
+        PS1="$_OLD_VIRTUAL_PS1"
+        export PS1
+        unset _OLD_VIRTUAL_PS1
+    fi
+
+    unset VIRTUAL_ENV
+    if [ ! "${1-}" = "nondestructive" ] ; then
+    # Self destruct!
+        unset -f deactivate
+    fi
+}
+
+# unset irrelevant variables
+deactivate nondestructive
+
+VIRTUAL_ENV="__VIRTUAL_ENV__"
+export VIRTUAL_ENV
+
+_OLD_VIRTUAL_PATH="$PATH"
+PATH="$VIRTUAL_ENV/__BIN_NAME__:$PATH"
+export PATH
+
+# unset PYTHONHOME if set
+if ! [ -z "${PYTHONHOME+_}" ] ; then
+    _OLD_VIRTUAL_PYTHONHOME="$PYTHONHOME"
+    unset PYTHONHOME
+fi
+
+if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT-}" ] ; then
+    _OLD_VIRTUAL_PS1="$PS1"
+    if [ "x__VIRTUAL_PROMPT__" != x ] ; then
+        PS1="__VIRTUAL_PROMPT__$PS1"
+    else
+        PS1="(`basename \"$VIRTUAL_ENV\"`) $PS1"
+    fi
+    export PS1
+fi
+
+# Make sure to unalias pydoc if it's already there
+alias pydoc 2>/dev/null >/dev/null && unalias pydoc
+
+pydoc () {
+    python -m pydoc "$@"
+}
+
+# This should detect bash and zsh, which have a hash command that must
+# be called to get it to forget past commands.  Without forgetting
+# past commands the $PATH changes we made may not be respected
+if [ -n "${BASH-}" ] || [ -n "${ZSH_VERSION-}" ] ; then
+    hash -r 2>/dev/null
+fi
diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate_this.py b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate_this.py
new file mode 100644
index 000000000..f18193bf8
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/activate_this.py
@@ -0,0 +1,34 @@
+"""By using execfile(this_file, dict(__file__=this_file)) you will
+activate this virtualenv environment.
+
+This can be used when you must use an existing Python interpreter, not
+the virtualenv bin/python
+"""
+
+try:
+    __file__
+except NameError:
+    raise AssertionError(
+        "You must run this like execfile('path/to/activate_this.py', dict(__file__='path/to/activate_this.py'))")
+import sys
+import os
+
+old_os_path = os.environ.get('PATH', '')
+os.environ['PATH'] = os.path.dirname(os.path.abspath(__file__)) + os.pathsep + old_os_path
+base = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+if sys.platform == 'win32':
+    site_packages = os.path.join(base, 'Lib', 'site-packages')
+else:
+    site_packages = os.path.join(base, 'lib', 'python%s' % sys.version[:3], 'site-packages')
+prev_sys_path = list(sys.path)
+import site
+site.addsitedir(site_packages)
+sys.real_prefix = sys.prefix
+sys.prefix = base
+# Move the added items to the front of the path:
+new_sys_path = []
+for item in list(sys.path):
+    if item not in prev_sys_path:
+        new_sys_path.append(item)
+        sys.path.remove(item)
+sys.path[:0] = new_sys_path
diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/deactivate.bat b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/deactivate.bat
new file mode 100644
index 000000000..9228d3171
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/deactivate.bat
@@ -0,0 +1,19 @@
+@echo off

+

+set VIRTUAL_ENV=

+

+REM Don't use () to avoid problems with them in %PATH%

+if not defined _OLD_VIRTUAL_PROMPT goto ENDIFVPROMPT

+    set "PROMPT=%_OLD_VIRTUAL_PROMPT%"

+    set _OLD_VIRTUAL_PROMPT=

+:ENDIFVPROMPT

+

+if not defined _OLD_VIRTUAL_PYTHONHOME goto ENDIFVHOME

+    set "PYTHONHOME=%_OLD_VIRTUAL_PYTHONHOME%"

+    set _OLD_VIRTUAL_PYTHONHOME=

+:ENDIFVHOME

+

+if not defined _OLD_VIRTUAL_PATH goto ENDIFVPATH

+    set "PATH=%_OLD_VIRTUAL_PATH%"

+    set _OLD_VIRTUAL_PATH=

+:ENDIFVPATH
\ No newline at end of file
diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/distutils-init.py b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/distutils-init.py
new file mode 100644
index 000000000..29fc1da45
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/distutils-init.py
@@ -0,0 +1,101 @@
+import os
+import sys
+import warnings 
+import imp
+import opcode # opcode is not a virtualenv module, so we can use it to find the stdlib
+              # Important! To work on pypy, this must be a module that resides in the
+              # lib-python/modified-x.y.z directory
+
+dirname = os.path.dirname
+
+distutils_path = os.path.join(os.path.dirname(opcode.__file__), 'distutils')
+if os.path.normpath(distutils_path) == os.path.dirname(os.path.normpath(__file__)):
+    warnings.warn(
+        "The virtualenv distutils package at %s appears to be in the same location as the system distutils?")
+else:
+    __path__.insert(0, distutils_path)
+    real_distutils = imp.load_module("_virtualenv_distutils", None, distutils_path, ('', '', imp.PKG_DIRECTORY))
+    # Copy the relevant attributes
+    try:
+        __revision__ = real_distutils.__revision__
+    except AttributeError:
+        pass
+    __version__ = real_distutils.__version__
+
+from distutils import dist, sysconfig
+
+try:
+    basestring
+except NameError:
+    basestring = str
+
+## patch build_ext (distutils doesn't know how to get the libs directory
+## path on windows - it hardcodes the paths around the patched sys.prefix)
+
+if sys.platform == 'win32':
+    from distutils.command.build_ext import build_ext as old_build_ext
+    class build_ext(old_build_ext):
+        def finalize_options (self):
+            if self.library_dirs is None:
+                self.library_dirs = []
+            elif isinstance(self.library_dirs, basestring):
+                self.library_dirs = self.library_dirs.split(os.pathsep)
+            
+            self.library_dirs.insert(0, os.path.join(sys.real_prefix, "Libs"))
+            old_build_ext.finalize_options(self)
+            
+    from distutils.command import build_ext as build_ext_module 
+    build_ext_module.build_ext = build_ext
+
+## distutils.dist patches:
+
+old_find_config_files = dist.Distribution.find_config_files
+def find_config_files(self):
+    found = old_find_config_files(self)
+    system_distutils = os.path.join(distutils_path, 'distutils.cfg')
+    #if os.path.exists(system_distutils):
+    #    found.insert(0, system_distutils)
+        # What to call the per-user config file
+    if os.name == 'posix':
+        user_filename = ".pydistutils.cfg"
+    else:
+        user_filename = "pydistutils.cfg"
+    user_filename = os.path.join(sys.prefix, user_filename)
+    if os.path.isfile(user_filename):
+        for item in list(found):
+            if item.endswith('pydistutils.cfg'):
+                found.remove(item)
+        found.append(user_filename)
+    return found
+dist.Distribution.find_config_files = find_config_files
+
+## distutils.sysconfig patches:
+
+old_get_python_inc = sysconfig.get_python_inc
+def sysconfig_get_python_inc(plat_specific=0, prefix=None):
+    if prefix is None:
+        prefix = sys.real_prefix
+    return old_get_python_inc(plat_specific, prefix)
+sysconfig_get_python_inc.__doc__ = old_get_python_inc.__doc__
+sysconfig.get_python_inc = sysconfig_get_python_inc
+
+old_get_python_lib = sysconfig.get_python_lib
+def sysconfig_get_python_lib(plat_specific=0, standard_lib=0, prefix=None):
+    if standard_lib and prefix is None:
+        prefix = sys.real_prefix
+    return old_get_python_lib(plat_specific, standard_lib, prefix)
+sysconfig_get_python_lib.__doc__ = old_get_python_lib.__doc__
+sysconfig.get_python_lib = sysconfig_get_python_lib
+
+old_get_config_vars = sysconfig.get_config_vars
+def sysconfig_get_config_vars(*args):
+    real_vars = old_get_config_vars(*args)
+    if sys.platform == 'win32':
+        lib_dir = os.path.join(sys.real_prefix, "libs")
+        if isinstance(real_vars, dict) and 'LIBDIR' not in real_vars:
+            real_vars['LIBDIR'] = lib_dir # asked for all
+        elif isinstance(real_vars, list) and 'LIBDIR' in args:
+            real_vars = real_vars + [lib_dir] # asked for list
+    return real_vars
+sysconfig_get_config_vars.__doc__ = old_get_config_vars.__doc__
+sysconfig.get_config_vars = sysconfig_get_config_vars
diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/distutils.cfg b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/distutils.cfg
new file mode 100644
index 000000000..1af230ec9
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/distutils.cfg
@@ -0,0 +1,6 @@
+# This is a config file local to this virtualenv installation
+# You may include options that will be used by all distutils commands,
+# and by easy_install.  For instance:
+#
+#   [easy_install]
+#   find_links = http://mylocalsite
diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/python-config b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/python-config
new file mode 100644
index 000000000..5e7a7c901
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/python-config
@@ -0,0 +1,78 @@
+#!__VIRTUAL_ENV__/__BIN_NAME__/python
+
+import sys
+import getopt
+import sysconfig
+
+valid_opts = ['prefix', 'exec-prefix', 'includes', 'libs', 'cflags',
+              'ldflags', 'help']
+
+if sys.version_info >= (3, 2):
+    valid_opts.insert(-1, 'extension-suffix')
+    valid_opts.append('abiflags')
+if sys.version_info >= (3, 3):
+    valid_opts.append('configdir')
+
+
+def exit_with_usage(code=1):
+    sys.stderr.write("Usage: {0} [{1}]\n".format(
+        sys.argv[0], '|'.join('--'+opt for opt in valid_opts)))
+    sys.exit(code)
+
+try:
+    opts, args = getopt.getopt(sys.argv[1:], '', valid_opts)
+except getopt.error:
+    exit_with_usage()
+
+if not opts:
+    exit_with_usage()
+
+pyver = sysconfig.get_config_var('VERSION')
+getvar = sysconfig.get_config_var
+
+opt_flags = [flag for (flag, val) in opts]
+
+if '--help' in opt_flags:
+    exit_with_usage(code=0)
+
+for opt in opt_flags:
+    if opt == '--prefix':
+        print(sysconfig.get_config_var('prefix'))
+
+    elif opt == '--exec-prefix':
+        print(sysconfig.get_config_var('exec_prefix'))
+
+    elif opt in ('--includes', '--cflags'):
+        flags = ['-I' + sysconfig.get_path('include'),
+                 '-I' + sysconfig.get_path('platinclude')]
+        if opt == '--cflags':
+            flags.extend(getvar('CFLAGS').split())
+        print(' '.join(flags))
+
+    elif opt in ('--libs', '--ldflags'):
+        abiflags = getattr(sys, 'abiflags', '')
+        libs = ['-lpython' + pyver + abiflags]
+        libs += getvar('LIBS').split()
+        libs += getvar('SYSLIBS').split()
+        # add the prefix/lib/pythonX.Y/config dir, but only if there is no
+        # shared library in prefix/lib/.
+        if opt == '--ldflags':
+            if not getvar('Py_ENABLE_SHARED'):
+                libs.insert(0, '-L' + getvar('LIBPL'))
+            if not getvar('PYTHONFRAMEWORK'):
+                libs.extend(getvar('LINKFORSHARED').split())
+        print(' '.join(libs))
+
+    elif opt == '--extension-suffix':
+        ext_suffix = sysconfig.get_config_var('EXT_SUFFIX')
+        if ext_suffix is None:
+            ext_suffix = sysconfig.get_config_var('SO')
+        print(ext_suffix)
+
+    elif opt == '--abiflags':
+        if not getattr(sys, 'abiflags', None):
+            exit_with_usage()
+        print(sys.abiflags)
+
+    elif opt == '--configdir':
+        print(sysconfig.get_config_var('LIBPL'))
diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/site.py b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/site.py
new file mode 100644
index 000000000..7969769c3
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv_embedded/site.py
@@ -0,0 +1,758 @@
+"""Append module search paths for third-party packages to sys.path.
+
+****************************************************************
+* This module is automatically imported during initialization. *
+****************************************************************
+
+In earlier versions of Python (up to 1.5a3), scripts or modules that
+needed to use site-specific modules would place ``import site''
+somewhere near the top of their code.  Because of the automatic
+import, this is no longer necessary (but code that does it still
+works).
+
+This will append site-specific paths to the module search path.  On
+Unix, it starts with sys.prefix and sys.exec_prefix (if different) and
+appends lib/python<version>/site-packages as well as lib/site-python.
+It also supports the Debian convention of
+lib/python<version>/dist-packages.  On other platforms (mainly Mac and
+Windows), it uses just sys.prefix (and sys.exec_prefix, if different,
+but this is unlikely).  The resulting directories, if they exist, are
+appended to sys.path, and also inspected for path configuration files.
+
+FOR DEBIAN, this sys.path is augmented with directories in /usr/local.
+Local addons go into /usr/local/lib/python<version>/site-packages
+(resp. /usr/local/lib/site-python), Debian addons install into
+/usr/{lib,share}/python<version>/dist-packages.
+
+A path configuration file is a file whose name has the form
+<package>.pth; its contents are additional directories (one per line)
+to be added to sys.path.  Non-existing directories (or
+non-directories) are never added to sys.path; no directory is added to
+sys.path more than once.  Blank lines and lines beginning with
+'#' are skipped. Lines starting with 'import' are executed.
+
+For example, suppose sys.prefix and sys.exec_prefix are set to
+/usr/local and there is a directory /usr/local/lib/python2.X/site-packages
+with three subdirectories, foo, bar and spam, and two path
+configuration files, foo.pth and bar.pth.  Assume foo.pth contains the
+following:
+
+  # foo package configuration
+  foo
+  bar
+  bletch
+
+and bar.pth contains:
+
+  # bar package configuration
+  bar
+
+Then the following directories are added to sys.path, in this order:
+
+  /usr/local/lib/python2.X/site-packages/bar
+  /usr/local/lib/python2.X/site-packages/foo
+
+Note that bletch is omitted because it doesn't exist; bar precedes foo
+because bar.pth comes alphabetically before foo.pth; and spam is
+omitted because it is not mentioned in either path configuration file.
+
+After these path manipulations, an attempt is made to import a module
+named sitecustomize, which can perform arbitrary additional
+site-specific customizations.  If this import fails with an
+ImportError exception, it is silently ignored.
+
+"""
+
+import sys
+import os
+try:
+    import __builtin__ as builtins
+except ImportError:
+    import builtins
+try:
+    set
+except NameError:
+    from sets import Set as set
+
+# Prefixes for site-packages; add additional prefixes like /usr/local here
+PREFIXES = [sys.prefix, sys.exec_prefix]
+# Enable per user site-packages directory
+# set it to False to disable the feature or True to force the feature
+ENABLE_USER_SITE = None
+# for distutils.commands.install
+USER_SITE = None
+USER_BASE = None
+
+_is_64bit = (getattr(sys, 'maxsize', None) or getattr(sys, 'maxint')) > 2**32
+_is_pypy = hasattr(sys, 'pypy_version_info')
+_is_jython = sys.platform[:4] == 'java'
+if _is_jython:
+    ModuleType = type(os)
+
+def makepath(*paths):
+    dir = os.path.join(*paths)
+    if _is_jython and (dir == '__classpath__' or
+                       dir.startswith('__pyclasspath__')):
+        return dir, dir
+    dir = os.path.abspath(dir)
+    return dir, os.path.normcase(dir)
+
+def abs__file__():
+    """Set all module' __file__ attribute to an absolute path"""
+    for m in sys.modules.values():
+        if ((_is_jython and not isinstance(m, ModuleType)) or
+            hasattr(m, '__loader__')):
+            # only modules need the abspath in Jython. and don't mess
+            # with a PEP 302-supplied __file__
+            continue
+        f = getattr(m, '__file__', None)
+        if f is None:
+            continue
+        m.__file__ = os.path.abspath(f)
+
+def removeduppaths():
+    """ Remove duplicate entries from sys.path along with making them
+    absolute"""
+    # This ensures that the initial path provided by the interpreter contains
+    # only absolute pathnames, even if we're running from the build directory.
+    L = []
+    known_paths = set()
+    for dir in sys.path:
+        # Filter out duplicate paths (on case-insensitive file systems also
+        # if they only differ in case); turn relative paths into absolute
+        # paths.
+        dir, dircase = makepath(dir)
+        if not dircase in known_paths:
+            L.append(dir)
+            known_paths.add(dircase)
+    sys.path[:] = L
+    return known_paths
+
+# XXX This should not be part of site.py, since it is needed even when
+# using the -S option for Python.  See http://www.python.org/sf/586680
+def addbuilddir():
+    """Append ./build/lib.<platform> in case we're running in the build dir
+    (especially for Guido :-)"""
+    from distutils.util import get_platform
+    s = "build/lib.%s-%.3s" % (get_platform(), sys.version)
+    if hasattr(sys, 'gettotalrefcount'):
+        s += '-pydebug'
+    s = os.path.join(os.path.dirname(sys.path[-1]), s)
+    sys.path.append(s)
+
+def _init_pathinfo():
+    """Return a set containing all existing directory entries from sys.path"""
+    d = set()
+    for dir in sys.path:
+        try:
+            if os.path.isdir(dir):
+                dir, dircase = makepath(dir)
+                d.add(dircase)
+        except TypeError:
+            continue
+    return d
+
+def addpackage(sitedir, name, known_paths):
+    """Add a new path to known_paths by combining sitedir and 'name' or execute
+    sitedir if it starts with 'import'"""
+    if known_paths is None:
+        _init_pathinfo()
+        reset = 1
+    else:
+        reset = 0
+    fullname = os.path.join(sitedir, name)
+    try:
+        f = open(fullname, "rU")
+    except IOError:
+        return
+    try:
+        for line in f:
+            if line.startswith("#"):
+                continue
+            if line.startswith("import"):
+                exec(line)
+                continue
+            line = line.rstrip()
+            dir, dircase = makepath(sitedir, line)
+            if not dircase in known_paths and os.path.exists(dir):
+                sys.path.append(dir)
+                known_paths.add(dircase)
+    finally:
+        f.close()
+    if reset:
+        known_paths = None
+    return known_paths
+
+def addsitedir(sitedir, known_paths=None):
+    """Add 'sitedir' argument to sys.path if missing and handle .pth files in
+    'sitedir'"""
+    if known_paths is None:
+        known_paths = _init_pathinfo()
+        reset = 1
+    else:
+        reset = 0
+    sitedir, sitedircase = makepath(sitedir)
+    if not sitedircase in known_paths:
+        sys.path.append(sitedir)        # Add path component
+    try:
+        names = os.listdir(sitedir)
+    except os.error:
+        return
+    names.sort()
+    for name in names:
+        if name.endswith(os.extsep + "pth"):
+            addpackage(sitedir, name, known_paths)
+    if reset:
+        known_paths = None
+    return known_paths
+
+def addsitepackages(known_paths, sys_prefix=sys.prefix, exec_prefix=sys.exec_prefix):
+    """Add site-packages (and possibly site-python) to sys.path"""
+    prefixes = [os.path.join(sys_prefix, "local"), sys_prefix]
+    if exec_prefix != sys_prefix:
+        prefixes.append(os.path.join(exec_prefix, "local"))
+
+    for prefix in prefixes:
+        if prefix:
+            if sys.platform in ('os2emx', 'riscos') or _is_jython:
+                sitedirs = [os.path.join(prefix, "Lib", "site-packages")]
+            elif _is_pypy:
+                sitedirs = [os.path.join(prefix, 'site-packages')]
+            elif sys.platform == 'darwin' and prefix == sys_prefix:
+
+                if prefix.startswith("/System/Library/Frameworks/"): # Apple's Python
+
+                    sitedirs = [os.path.join("/Library/Python", sys.version[:3], "site-packages"),
+                                os.path.join(prefix, "Extras", "lib", "python")]
+
+                else: # any other Python distros on OSX work this way
+                    sitedirs = [os.path.join(prefix, "lib",
+                                             "python" + sys.version[:3], "site-packages")]
+
+            elif os.sep == '/':
+                sitedirs = [os.path.join(prefix,
+                                         "lib",
+                                         "python" + sys.version[:3],
+                                         "site-packages"),
+                            os.path.join(prefix, "lib", "site-python"),
+                            os.path.join(prefix, "python" + sys.version[:3], "lib-dynload")]
+                lib64_dir = os.path.join(prefix, "lib64", "python" + sys.version[:3], "site-packages")
+                if (os.path.exists(lib64_dir) and
+                    os.path.realpath(lib64_dir) not in [os.path.realpath(p) for p in sitedirs]):
+                    if _is_64bit:
+                        sitedirs.insert(0, lib64_dir)
+                    else:
+                        sitedirs.append(lib64_dir)
+                try:
+                    # sys.getobjects only available in --with-pydebug build
+                    sys.getobjects
+                    sitedirs.insert(0, os.path.join(sitedirs[0], 'debug'))
+                except AttributeError:
+                    pass
+                # Debian-specific dist-packages directories:
+                sitedirs.append(os.path.join(prefix, "local/lib",
+                                             "python" + sys.version[:3],
+                                             "dist-packages"))
+                if sys.version[0] == '2':
+                    sitedirs.append(os.path.join(prefix, "lib",
+                                                 "python" + sys.version[:3],
+                                                 "dist-packages"))
+                else:
+                    sitedirs.append(os.path.join(prefix, "lib",
+                                                 "python" + sys.version[0],
+                                                 "dist-packages"))
+                sitedirs.append(os.path.join(prefix, "lib", "dist-python"))
+            else:
+                sitedirs = [prefix, os.path.join(prefix, "lib", "site-packages")]
+            if sys.platform == 'darwin':
+                # for framework builds *only* we add the standard Apple
+                # locations. Currently only per-user, but /Library and
+                # /Network/Library could be added too
+                if 'Python.framework' in prefix:
+                    home = os.environ.get('HOME')
+                    if home:
+                        sitedirs.append(
+                            os.path.join(home,
+                                         'Library',
+                                         'Python',
+                                         sys.version[:3],
+                                         'site-packages'))
+            for sitedir in sitedirs:
+                if os.path.isdir(sitedir):
+                    addsitedir(sitedir, known_paths)
+    return None
+
+def check_enableusersite():
+    """Check if user site directory is safe for inclusion
+
+    The function tests for the command line flag (including environment var),
+    process uid/gid equal to effective uid/gid.
+
+    None: Disabled for security reasons
+    False: Disabled by user (command line option)
+    True: Safe and enabled
+    """
+    if hasattr(sys, 'flags') and getattr(sys.flags, 'no_user_site', False):
+        return False
+
+    if hasattr(os, "getuid") and hasattr(os, "geteuid"):
+        # check process uid == effective uid
+        if os.geteuid() != os.getuid():
+            return None
+    if hasattr(os, "getgid") and hasattr(os, "getegid"):
+        # check process gid == effective gid
+        if os.getegid() != os.getgid():
+            return None
+
+    return True
+
+def addusersitepackages(known_paths):
+    """Add a per user site-package to sys.path
+
+    Each user has its own python directory with site-packages in the
+    home directory.
+
+    USER_BASE is the root directory for all Python versions
+
+    USER_SITE is the user specific site-packages directory
+
+    USER_SITE/.. can be used for data.
+    """
+    global USER_BASE, USER_SITE, ENABLE_USER_SITE
+    env_base = os.environ.get("PYTHONUSERBASE", None)
+
+    def joinuser(*args):
+        return os.path.expanduser(os.path.join(*args))
+
+    #if sys.platform in ('os2emx', 'riscos'):
+    #    # Don't know what to put here
+    #    USER_BASE = ''
+    #    USER_SITE = ''
+    if os.name == "nt":
+        base = os.environ.get("APPDATA") or "~"
+        if env_base:
+            USER_BASE = env_base
+        else:
+            USER_BASE = joinuser(base, "Python")
+        USER_SITE = os.path.join(USER_BASE,
+                                 "Python" + sys.version[0] + sys.version[2],
+                                 "site-packages")
+    else:
+        if env_base:
+            USER_BASE = env_base
+        else:
+            USER_BASE = joinuser("~", ".local")
+        USER_SITE = os.path.join(USER_BASE, "lib",
+                                 "python" + sys.version[:3],
+                                 "site-packages")
+
+    if ENABLE_USER_SITE and os.path.isdir(USER_SITE):
+        addsitedir(USER_SITE, known_paths)
+    if ENABLE_USER_SITE:
+        for dist_libdir in ("lib", "local/lib"):
+            user_site = os.path.join(USER_BASE, dist_libdir,
+                                     "python" + sys.version[:3],
+                                     "dist-packages")
+            if os.path.isdir(user_site):
+                addsitedir(user_site, known_paths)
+    return known_paths
+
+
+
+def setBEGINLIBPATH():
+    """The OS/2 EMX port has optional extension modules that do double duty
+    as DLLs (and must use the .DLL file extension) for other extensions.
+    The library search path needs to be amended so these will be found
+    during module import.  Use BEGINLIBPATH so that these are at the start
+    of the library search path.
+
+    """
+    dllpath = os.path.join(sys.prefix, "Lib", "lib-dynload")
+    libpath = os.environ['BEGINLIBPATH'].split(';')
+    if libpath[-1]:
+        libpath.append(dllpath)
+    else:
+        libpath[-1] = dllpath
+    os.environ['BEGINLIBPATH'] = ';'.join(libpath)
+
+
+def setquit():
+    """Define new built-ins 'quit' and 'exit'.
+    These are simply strings that display a hint on how to exit.
+
+    """
+    if os.sep == ':':
+        eof = 'Cmd-Q'
+    elif os.sep == '\\':
+        eof = 'Ctrl-Z plus Return'
+    else:
+        eof = 'Ctrl-D (i.e. EOF)'
+
+    class Quitter(object):
+        def __init__(self, name):
+            self.name = name
+        def __repr__(self):
+            return 'Use %s() or %s to exit' % (self.name, eof)
+        def __call__(self, code=None):
+            # Shells like IDLE catch the SystemExit, but listen when their
+            # stdin wrapper is closed.
+            try:
+                sys.stdin.close()
+            except:
+                pass
+            raise SystemExit(code)
+    builtins.quit = Quitter('quit')
+    builtins.exit = Quitter('exit')
+
+
+class _Printer(object):
+    """interactive prompt objects for printing the license text, a list of
+    contributors and the copyright notice."""
+
+    MAXLINES = 23
+
+    def __init__(self, name, data, files=(), dirs=()):
+        self.__name = name
+        self.__data = data
+        self.__files = files
+        self.__dirs = dirs
+        self.__lines = None
+
+    def __setup(self):
+        if self.__lines:
+            return
+        data = None
+        for dir in self.__dirs:
+            for filename in self.__files:
+                filename = os.path.join(dir, filename)
+                try:
+                    fp = open(filename, "rU")
+                    data = fp.read()
+                    fp.close()
+                    break
+                except IOError:
+                    pass
+            if data:
+                break
+        if not data:
+            data = self.__data
+        self.__lines = data.split('\n')
+        self.__linecnt = len(self.__lines)
+
+    def __repr__(self):
+        self.__setup()
+        if len(self.__lines) <= self.MAXLINES:
+            return "\n".join(self.__lines)
+        else:
+            return "Type %s() to see the full %s text" % ((self.__name,)*2)
+
+    def __call__(self):
+        self.__setup()
+        prompt = 'Hit Return for more, or q (and Return) to quit: '
+        lineno = 0
+        while 1:
+            try:
+                for i in range(lineno, lineno + self.MAXLINES):
+                    print(self.__lines[i])
+            except IndexError:
+                break
+            else:
+                lineno += self.MAXLINES
+                key = None
+                while key is None:
+                    try:
+                        key = raw_input(prompt)
+                    except NameError:
+                        key = input(prompt)
+                    if key not in ('', 'q'):
+                        key = None
+                if key == 'q':
+                    break
+
+def setcopyright():
+    """Set 'copyright' and 'credits' in __builtin__"""
+    builtins.copyright = _Printer("copyright", sys.copyright)
+    if _is_jython:
+        builtins.credits = _Printer(
+            "credits",
+            "Jython is maintained by the Jython developers (www.jython.org).")
+    elif _is_pypy:
+        builtins.credits = _Printer(
+            "credits",
+            "PyPy is maintained by the PyPy developers: http://pypy.org/")
+    else:
+        builtins.credits = _Printer("credits", """\
+    Thanks to CWI, CNRI, BeOpen.com, Zope Corporation and a cast of thousands
+    for supporting Python development.  See www.python.org for more information.""")
+    here = os.path.dirname(os.__file__)
+    builtins.license = _Printer(
+        "license", "See http://www.python.org/%.3s/license.html" % sys.version,
+        ["LICENSE.txt", "LICENSE"],
+        [os.path.join(here, os.pardir), here, os.curdir])
+
+
+class _Helper(object):
+    """Define the built-in 'help'.
+    This is a wrapper around pydoc.help (with a twist).
+
+    """
+
+    def __repr__(self):
+        return "Type help() for interactive help, " \
+               "or help(object) for help about object."
+    def __call__(self, *args, **kwds):
+        import pydoc
+        return pydoc.help(*args, **kwds)
+
+def sethelper():
+    builtins.help = _Helper()
+
+def aliasmbcs():
+    """On Windows, some default encodings are not provided by Python,
+    while they are always available as "mbcs" in each locale. Make
+    them usable by aliasing to "mbcs" in such a case."""
+    if sys.platform == 'win32':
+        import locale, codecs
+        enc = locale.getdefaultlocale()[1]
+        if enc.startswith('cp'):            # "cp***" ?
+            try:
+                codecs.lookup(enc)
+            except LookupError:
+                import encodings
+                encodings._cache[enc] = encodings._unknown
+                encodings.aliases.aliases[enc] = 'mbcs'
+
+def setencoding():
+    """Set the string encoding used by the Unicode implementation.  The
+    default is 'ascii', but if you're willing to experiment, you can
+    change this."""
+    encoding = "ascii" # Default value set by _PyUnicode_Init()
+    if 0:
+        # Enable to support locale aware default string encodings.
+        import locale
+        loc = locale.getdefaultlocale()
+        if loc[1]:
+            encoding = loc[1]
+    if 0:
+        # Enable to switch off string to Unicode coercion and implicit
+        # Unicode to string conversion.
+        encoding = "undefined"
+    if encoding != "ascii":
+        # On Non-Unicode builds this will raise an AttributeError...
+        sys.setdefaultencoding(encoding) # Needs Python Unicode build !
+
+
+def execsitecustomize():
+    """Run custom site specific code, if available."""
+    try:
+        import sitecustomize
+    except ImportError:
+        pass
+
+def virtual_install_main_packages():
+    f = open(os.path.join(os.path.dirname(__file__), 'orig-prefix.txt'))
+    sys.real_prefix = f.read().strip()
+    f.close()
+    pos = 2
+    hardcoded_relative_dirs = []
+    if sys.path[0] == '':
+        pos += 1
+    if _is_jython:
+        paths = [os.path.join(sys.real_prefix, 'Lib')]
+    elif _is_pypy:
+        if sys.version_info > (3, 2):
+            cpyver = '%d' % sys.version_info[0]
+        elif sys.pypy_version_info >= (1, 5):
+            cpyver = '%d.%d' % sys.version_info[:2]
+        else:
+            cpyver = '%d.%d.%d' % sys.version_info[:3]
+        paths = [os.path.join(sys.real_prefix, 'lib_pypy'),
+                 os.path.join(sys.real_prefix, 'lib-python', cpyver)]
+        if sys.pypy_version_info < (1, 9):
+            paths.insert(1, os.path.join(sys.real_prefix,
+                                         'lib-python', 'modified-%s' % cpyver))
+        hardcoded_relative_dirs = paths[:] # for the special 'darwin' case below
+        #
+        # This is hardcoded in the Python executable, but relative to sys.prefix:
+        for path in paths[:]:
+            plat_path = os.path.join(path, 'plat-%s' % sys.platform)
+            if os.path.exists(plat_path):
+                paths.append(plat_path)
+    elif sys.platform == 'win32':
+        paths = [os.path.join(sys.real_prefix, 'Lib'), os.path.join(sys.real_prefix, 'DLLs')]
+    else:
+        paths = [os.path.join(sys.real_prefix, 'lib', 'python'+sys.version[:3])]
+        hardcoded_relative_dirs = paths[:] # for the special 'darwin' case below
+        lib64_path = os.path.join(sys.real_prefix, 'lib64', 'python'+sys.version[:3])
+        if os.path.exists(lib64_path):
+            if _is_64bit:
+                paths.insert(0, lib64_path)
+            else:
+                paths.append(lib64_path)
+        # This is hardcoded in the Python executable, but relative to
+        # sys.prefix.  Debian change: we need to add the multiarch triplet
+        # here, which is where the real stuff lives.  As per PEP 421, in
+        # Python 3.3+, this lives in sys.implementation, while in Python 2.7
+        # it lives in sys.
+        try:
+            arch = getattr(sys, 'implementation', sys)._multiarch
+        except AttributeError:
+            # This is a non-multiarch aware Python.  Fallback to the old way.
+            arch = sys.platform
+        plat_path = os.path.join(sys.real_prefix, 'lib',
+                                 'python'+sys.version[:3],
+                                 'plat-%s' % arch)
+        if os.path.exists(plat_path):
+            paths.append(plat_path)
+    # This is hardcoded in the Python executable, but
+    # relative to sys.prefix, so we have to fix up:
+    for path in list(paths):
+        tk_dir = os.path.join(path, 'lib-tk')
+        if os.path.exists(tk_dir):
+            paths.append(tk_dir)
+
+    # These are hardcoded in the Apple's Python executable,
+    # but relative to sys.prefix, so we have to fix them up:
+    if sys.platform == 'darwin':
+        hardcoded_paths = [os.path.join(relative_dir, module)
+                           for relative_dir in hardcoded_relative_dirs
+                           for module in ('plat-darwin', 'plat-mac', 'plat-mac/lib-scriptpackages')]
+
+        for path in hardcoded_paths:
+            if os.path.exists(path):
+                paths.append(path)
+
+    sys.path.extend(paths)
+
+def force_global_eggs_after_local_site_packages():
+    """
+    Force easy_installed eggs in the global environment to get placed
+    in sys.path after all packages inside the virtualenv.  This
+    maintains the "least surprise" result that packages in the
+    virtualenv always mask global packages, never the other way
+    around.
+
+    """
+    egginsert = getattr(sys, '__egginsert', 0)
+    for i, path in enumerate(sys.path):
+        if i > egginsert and path.startswith(sys.prefix):
+            egginsert = i
+    sys.__egginsert = egginsert + 1
+
+def virtual_addsitepackages(known_paths):
+    force_global_eggs_after_local_site_packages()
+    return addsitepackages(known_paths, sys_prefix=sys.real_prefix)
+
+def fixclasspath():
+    """Adjust the special classpath sys.path entries for Jython. These
+    entries should follow the base virtualenv lib directories.
+    """
+    paths = []
+    classpaths = []
+    for path in sys.path:
+        if path == '__classpath__' or path.startswith('__pyclasspath__'):
+            classpaths.append(path)
+        else:
+            paths.append(path)
+    sys.path = paths
+    sys.path.extend(classpaths)
+
+def execusercustomize():
+    """Run custom user specific code, if available."""
+    try:
+        import usercustomize
+    except ImportError:
+        pass
+
+
+def main():
+    global ENABLE_USER_SITE
+    virtual_install_main_packages()
+    abs__file__()
+    paths_in_sys = removeduppaths()
+    if (os.name == "posix" and sys.path and
+        os.path.basename(sys.path[-1]) == "Modules"):
+        addbuilddir()
+    if _is_jython:
+        fixclasspath()
+    GLOBAL_SITE_PACKAGES = not os.path.exists(os.path.join(os.path.dirname(__file__), 'no-global-site-packages.txt'))
+    if not GLOBAL_SITE_PACKAGES:
+        ENABLE_USER_SITE = False
+    if ENABLE_USER_SITE is None:
+        ENABLE_USER_SITE = check_enableusersite()
+    paths_in_sys = addsitepackages(paths_in_sys)
+    paths_in_sys = addusersitepackages(paths_in_sys)
+    if GLOBAL_SITE_PACKAGES:
+        paths_in_sys = virtual_addsitepackages(paths_in_sys)
+    if sys.platform == 'os2emx':
+        setBEGINLIBPATH()
+    setquit()
+    setcopyright()
+    sethelper()
+    aliasmbcs()
+    setencoding()
+    execsitecustomize()
+    if ENABLE_USER_SITE:
+        execusercustomize()
+    # Remove sys.setdefaultencoding() so that users cannot change the
+    # encoding after initialization.  The test for presence is needed when
+    # this module is run as a script, because this code is executed twice.
+    if hasattr(sys, "setdefaultencoding"):
+        del sys.setdefaultencoding
+
+main()
+
+def _script():
+    help = """\
+    %s [--user-base] [--user-site]
+
+    Without arguments print some useful information
+    With arguments print the value of USER_BASE and/or USER_SITE separated
+    by '%s'.
+
+    Exit codes with --user-base or --user-site:
+      0 - user site directory is enabled
+      1 - user site directory is disabled by user
+      2 - uses site directory is disabled by super user
+          or for security reasons
+     >2 - unknown error
+    """
+    args = sys.argv[1:]
+    if not args:
+        print("sys.path = [")
+        for dir in sys.path:
+            print("    %r," % (dir,))
+        print("]")
+        def exists(path):
+            if os.path.isdir(path):
+                return "exists"
+            else:
+                return "doesn't exist"
+        print("USER_BASE: %r (%s)" % (USER_BASE, exists(USER_BASE)))
+        print("USER_SITE: %r (%s)" % (USER_SITE, exists(USER_BASE)))
+        print("ENABLE_USER_SITE: %r" %  ENABLE_USER_SITE)
+        sys.exit(0)
+
+    buffer = []
+    if '--user-base' in args:
+        buffer.append(USER_BASE)
+    if '--user-site' in args:
+        buffer.append(USER_SITE)
+
+    if buffer:
+        print(os.pathsep.join(buffer))
+        if ENABLE_USER_SITE:
+            sys.exit(0)
+        elif ENABLE_USER_SITE is False:
+            sys.exit(1)
+        elif ENABLE_USER_SITE is None:
+            sys.exit(2)
+        else:
+            sys.exit(3)
+    else:
+        import textwrap
+        print(textwrap.dedent(help % (sys.argv[0], os.pathsep)))
+        sys.exit(10)
+
+if __name__ == '__main__':
+    _script()
diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv_support/__init__.py b/testing/mozharness/external_tools/virtualenv/virtualenv_support/__init__.py
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv_support/__init__.py
diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv_support/argparse-1.4.0-py2.py3-none-any.whl b/testing/mozharness/external_tools/virtualenv/virtualenv_support/argparse-1.4.0-py2.py3-none-any.whl
new file mode 100644
index 000000000..dfef51d44
--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv_support/argparse-1.4.0-py2.py3-none-any.whl
diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv_support/pip-8.1.2-py2.py3-none-any.whl b/testing/mozharness/external_tools/virtualenv/virtualenv_support/pip-8.1.2-py2.py3-none-any.whl
new file mode 100644
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--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv_support/pip-8.1.2-py2.py3-none-any.whl
diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv_support/setuptools-25.2.0-py2.py3-none-any.whl b/testing/mozharness/external_tools/virtualenv/virtualenv_support/setuptools-25.2.0-py2.py3-none-any.whl
new file mode 100644
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--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv_support/setuptools-25.2.0-py2.py3-none-any.whl
diff --git a/testing/mozharness/external_tools/virtualenv/virtualenv_support/wheel-0.29.0-py2.py3-none-any.whl b/testing/mozharness/external_tools/virtualenv/virtualenv_support/wheel-0.29.0-py2.py3-none-any.whl
new file mode 100644
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--- /dev/null
+++ b/testing/mozharness/external_tools/virtualenv/virtualenv_support/wheel-0.29.0-py2.py3-none-any.whl