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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.