NOISSUE merging of strategy into profile, onesix into minecraft

26 files changed, 1143 insertions, 1549 deletions

diff --git a/api/logic/minecraft/Library_test.cpp b/api/logic/minecraft/Library_test.cpp
index 3f4828c9..54296849 100644
--- a/api/logic/minecraft/Library_test.cpp
+++ b/api/logic/minecraft/Library_test.cpp
@@ -2,7 +2,7 @@
 #include "TestUtil.h"
 
 #include "minecraft/MojangVersionFormat.h"
-#include "minecraft/onesix/OneSixVersionFormat.h"
+#include "minecraft/OneSixVersionFormat.h"
 #include "minecraft/Library.h"
 #include "net/HttpMetaCache.h"
 #include "FileSystem.h"
diff --git a/api/logic/minecraft/MinecraftInstance.cpp b/api/logic/minecraft/MinecraftInstance.cpp
index 785ddb38..df51ed2c 100644
--- a/api/logic/minecraft/MinecraftInstance.cpp
+++ b/api/logic/minecraft/MinecraftInstance.cpp
@@ -17,16 +17,23 @@
 #include "launch/steps/PreLaunchCommand.h"
 #include "launch/steps/TextPrint.h"
 #include "minecraft/launch/LauncherPartLaunch.h"
+#include "minecraft/launch/DirectJavaLaunch.h"
 #include "minecraft/launch/ModMinecraftJar.h"
 #include "minecraft/launch/ClaimAccount.h"
 #include "java/launch/CheckJava.h"
 #include "java/JavaUtils.h"
-#include <meta/Index.h>
-#include <meta/VersionList.h>
+#include "meta/Index.h"
+#include "meta/VersionList.h"
 
-#include <icons/IIconList.h>
+#include "ModList.h"
+#include "WorldList.h"
+
+#include "icons/IIconList.h"
 
 #include <QCoreApplication>
+#include "MinecraftProfile.h"
+#include "AssetsUtils.h"
+#include "MinecraftUpdate.h"
 
 #define IBUS "@im=ibus"
 
@@ -56,6 +63,12 @@ private:
 MinecraftInstance::MinecraftInstance(SettingsObjectPtr globalSettings, SettingsObjectPtr settings, const QString &rootDir)
 	: BaseInstance(globalSettings, settings, rootDir)
 {
+	// FIXME: remove these
+	m_settings->registerSetting({"IntendedVersion", "MinecraftVersion"}, "");
+	m_settings->registerSetting("LWJGLVersion", "2.9.1");
+	m_settings->registerSetting("ForgeVersion", "");
+	m_settings->registerSetting("LiteloaderVersion", "");
+
 	// Java Settings
 	auto javaOverride = m_settings->registerSetting("OverrideJava", false);
 	auto locationOverride = m_settings->registerSetting("OverrideJavaLocation", false);
@@ -90,6 +103,70 @@ MinecraftInstance::MinecraftInstance(SettingsObjectPtr globalSettings, SettingsO
 	m_settings->registerOverride(globalSettings->getSetting("MCLaunchMethod"), launchMethodOverride);
 }
 
+void MinecraftInstance::init()
+{
+	createProfile();
+}
+
+QString MinecraftInstance::typeName() const
+{
+	return "Minecraft";
+}
+
+
+bool MinecraftInstance::reload()
+{
+	if (BaseInstance::reload())
+	{
+		try
+		{
+			reloadProfile();
+			return true;
+		}
+		catch (...)
+		{
+			return false;
+		}
+	}
+	return false;
+}
+
+void MinecraftInstance::createProfile()
+{
+	m_profile.reset(new MinecraftProfile(this));
+}
+
+void MinecraftInstance::reloadProfile()
+{
+	m_profile->reload();
+	setVersionBroken(m_profile->getProblemSeverity() == ProblemSeverity::Error);
+	emit versionReloaded();
+}
+
+void MinecraftInstance::clearProfile()
+{
+	m_profile->clear();
+	emit versionReloaded();
+}
+
+std::shared_ptr<MinecraftProfile> MinecraftInstance::getMinecraftProfile() const
+{
+	return m_profile;
+}
+
+QSet<QString> MinecraftInstance::traits()
+{
+	auto version = getMinecraftProfile();
+	if (!version)
+	{
+		return {"version-incomplete"};
+	}
+	else
+	{
+		return version->getTraits();
+	}
+}
+
 QString MinecraftInstance::minecraftRoot() const
 {
 	QFileInfo mcDir(FS::PathCombine(instanceRoot(), "minecraft"));
@@ -106,9 +183,107 @@ QString MinecraftInstance::binRoot() const
 	return FS::PathCombine(minecraftRoot(), "bin");
 }
 
-std::shared_ptr< BaseVersionList > MinecraftInstance::versionList() const
+QString MinecraftInstance::getNativePath() const
+{
+	QDir natives_dir(FS::PathCombine(instanceRoot(), "natives/"));
+	return natives_dir.absolutePath();
+}
+
+QString MinecraftInstance::getLocalLibraryPath() const
+{
+	QDir libraries_dir(FS::PathCombine(instanceRoot(), "libraries/"));
+	return libraries_dir.absolutePath();
+}
+
+QString MinecraftInstance::loaderModsDir() const
+{
+	return FS::PathCombine(minecraftRoot(), "mods");
+}
+
+QString MinecraftInstance::coreModsDir() const
+{
+	return FS::PathCombine(minecraftRoot(), "coremods");
+}
+
+QString MinecraftInstance::resourcePacksDir() const
+{
+	return FS::PathCombine(minecraftRoot(), "resourcepacks");
+}
+
+QString MinecraftInstance::texturePacksDir() const
+{
+	return FS::PathCombine(minecraftRoot(), "texturepacks");
+}
+
+QString MinecraftInstance::instanceConfigFolder() const
+{
+	return FS::PathCombine(minecraftRoot(), "config");
+}
+
+QString MinecraftInstance::jarModsDir() const
+{
+	return FS::PathCombine(instanceRoot(), "jarmods");
+}
+
+QString MinecraftInstance::libDir() const
 {
-	return ENV.metadataIndex()->get("net.minecraft");
+	return FS::PathCombine(minecraftRoot(), "lib");
+}
+
+QString MinecraftInstance::worldDir() const
+{
+	return FS::PathCombine(minecraftRoot(), "saves");
+}
+
+QDir MinecraftInstance::librariesPath() const
+{
+	return QDir::current().absoluteFilePath("libraries");
+}
+
+QDir MinecraftInstance::jarmodsPath() const
+{
+	return QDir(jarModsDir());
+}
+
+QDir MinecraftInstance::versionsPath() const
+{
+	return QDir::current().absoluteFilePath("versions");
+}
+
+QStringList MinecraftInstance::getClassPath() const
+{
+	QStringList jars, nativeJars;
+	auto javaArchitecture = settings()->get("JavaArchitecture").toString();
+	m_profile->getLibraryFiles(javaArchitecture, jars, nativeJars, getLocalLibraryPath(), binRoot());
+	return jars;
+}
+
+QString MinecraftInstance::getMainClass() const
+{
+	return m_profile->getMainClass();
+}
+
+QStringList MinecraftInstance::getNativeJars() const
+{
+	QStringList jars, nativeJars;
+	auto javaArchitecture = settings()->get("JavaArchitecture").toString();
+	m_profile->getLibraryFiles(javaArchitecture, jars, nativeJars, getLocalLibraryPath(), binRoot());
+	return nativeJars;
+}
+
+QStringList MinecraftInstance::extraArguments() const
+{
+	auto list = BaseInstance::extraArguments();
+	auto version = getMinecraftProfile();
+	if (!version)
+		return list;
+	auto jarMods = getJarMods();
+	if (!jarMods.isEmpty())
+	{
+		list.append({"-Dfml.ignoreInvalidMinecraftCertificates=true",
+					 "-Dfml.ignorePatchDiscrepancies=true"});
+	}
+	return list;
 }
 
 QStringList MinecraftInstance::javaArguments() const
@@ -193,6 +368,270 @@ QProcessEnvironment MinecraftInstance::createEnvironment()
 	return env;
 }
 
+static QString replaceTokensIn(QString text, QMap<QString, QString> with)
+{
+	QString result;
+	QRegExp token_regexp("\\$\\{(.+)\\}");
+	token_regexp.setMinimal(true);
+	QStringList list;
+	int tail = 0;
+	int head = 0;
+	while ((head = token_regexp.indexIn(text, head)) != -1)
+	{
+		result.append(text.mid(tail, head - tail));
+		QString key = token_regexp.cap(1);
+		auto iter = with.find(key);
+		if (iter != with.end())
+		{
+			result.append(*iter);
+		}
+		head += token_regexp.matchedLength();
+		tail = head;
+	}
+	result.append(text.mid(tail));
+	return result;
+}
+
+QStringList MinecraftInstance::processMinecraftArgs(AuthSessionPtr session) const
+{
+	QString args_pattern = m_profile->getMinecraftArguments();
+	for (auto tweaker : m_profile->getTweakers())
+	{
+		args_pattern += " --tweakClass " + tweaker;
+	}
+
+	QMap<QString, QString> token_mapping;
+	// yggdrasil!
+	if(session)
+	{
+		token_mapping["auth_username"] = session->username;
+		token_mapping["auth_session"] = session->session;
+		token_mapping["auth_access_token"] = session->access_token;
+		token_mapping["auth_player_name"] = session->player_name;
+		token_mapping["auth_uuid"] = session->uuid;
+		token_mapping["user_properties"] = session->serializeUserProperties();
+		token_mapping["user_type"] = session->user_type;
+	}
+
+	// blatant self-promotion.
+	token_mapping["profile_name"] = token_mapping["version_name"] = "MultiMC5";
+	if(m_profile->isVanilla())
+	{
+		token_mapping["version_type"] = m_profile->getMinecraftVersionType();
+	}
+	else
+	{
+		token_mapping["version_type"] = "custom";
+	}
+
+	QString absRootDir = QDir(minecraftRoot()).absolutePath();
+	token_mapping["game_directory"] = absRootDir;
+	QString absAssetsDir = QDir("assets/").absolutePath();
+	auto assets = m_profile->getMinecraftAssets();
+	// FIXME: this is wrong and should be run as an async task
+	token_mapping["game_assets"] = AssetsUtils::reconstructAssets(assets->id).absolutePath();
+
+	// 1.7.3+ assets tokens
+	token_mapping["assets_root"] = absAssetsDir;
+	token_mapping["assets_index_name"] = assets->id;
+
+	QStringList parts = args_pattern.split(' ', QString::SkipEmptyParts);
+	for (int i = 0; i < parts.length(); i++)
+	{
+		parts[i] = replaceTokensIn(parts[i], token_mapping);
+	}
+	return parts;
+}
+
+QString MinecraftInstance::createLaunchScript(AuthSessionPtr session)
+{
+	QString launchScript;
+
+	if (!m_profile)
+		return nullptr;
+
+	auto mainClass = getMainClass();
+	if (!mainClass.isEmpty())
+	{
+		launchScript += "mainClass " + mainClass + "\n";
+	}
+	auto appletClass = m_profile->getAppletClass();
+	if (!appletClass.isEmpty())
+	{
+		launchScript += "appletClass " + appletClass + "\n";
+	}
+
+	// generic minecraft params
+	for (auto param : processMinecraftArgs(session))
+	{
+		launchScript += "param " + param + "\n";
+	}
+
+	// window size, title and state, legacy
+	{
+		QString windowParams;
+		if (settings()->get("LaunchMaximized").toBool())
+			windowParams = "max";
+		else
+			windowParams = QString("%1x%2")
+							   .arg(settings()->get("MinecraftWinWidth").toInt())
+							   .arg(settings()->get("MinecraftWinHeight").toInt());
+		launchScript += "windowTitle " + windowTitle() + "\n";
+		launchScript += "windowParams " + windowParams + "\n";
+	}
+
+	// legacy auth
+	if(session)
+	{
+		launchScript += "userName " + session->player_name + "\n";
+		launchScript += "sessionId " + session->session + "\n";
+	}
+
+	// libraries and class path.
+	{
+		QStringList jars, nativeJars;
+		auto javaArchitecture = settings()->get("JavaArchitecture").toString();
+		m_profile->getLibraryFiles(javaArchitecture, jars, nativeJars, getLocalLibraryPath(), binRoot());
+		for(auto file: jars)
+		{
+			launchScript += "cp " + file + "\n";
+		}
+		for(auto file: nativeJars)
+		{
+			launchScript += "ext " + file + "\n";
+		}
+		launchScript += "natives " + getNativePath() + "\n";
+	}
+
+	for (auto trait : m_profile->getTraits())
+	{
+		launchScript += "traits " + trait + "\n";
+	}
+	launchScript += "launcher onesix\n";
+	return launchScript;
+}
+
+QStringList MinecraftInstance::verboseDescription(AuthSessionPtr session)
+{
+	QStringList out;
+	out << "Main Class:" << "  " + getMainClass() << "";
+	out << "Native path:" << "  " + getNativePath() << "";
+
+
+	auto alltraits = traits();
+	if(alltraits.size())
+	{
+		out << "Traits:";
+		for (auto trait : alltraits)
+		{
+			out << "traits " + trait;
+		}
+		out << "";
+	}
+
+	// libraries and class path.
+	{
+		out << "Libraries:";
+		QStringList jars, nativeJars;
+		auto javaArchitecture = settings()->get("JavaArchitecture").toString();
+		m_profile->getLibraryFiles(javaArchitecture, jars, nativeJars, getLocalLibraryPath(), binRoot());
+		auto printLibFile = [&](const QString & path)
+		{
+			QFileInfo info(path);
+			if(info.exists())
+			{
+				out << "  " + path;
+			}
+			else
+			{
+				out << "  " + path + " (missing)";
+			}
+		};
+		for(auto file: jars)
+		{
+			printLibFile(file);
+		}
+		out << "";
+		out << "Native libraries:";
+		for(auto file: nativeJars)
+		{
+			printLibFile(file);
+		}
+		out << "";
+	}
+
+	if(loaderModList()->size())
+	{
+		out << "Mods:";
+		for(auto & mod: loaderModList()->allMods())
+		{
+			if(!mod.enabled())
+				continue;
+			if(mod.type() == Mod::MOD_FOLDER)
+				continue;
+			// TODO: proper implementation would need to descend into folders.
+
+			out << "  " + mod.filename().completeBaseName();
+		}
+		out << "";
+	}
+
+	if(coreModList()->size())
+	{
+		out << "Core Mods:";
+		for(auto & coremod: coreModList()->allMods())
+		{
+			if(!coremod.enabled())
+				continue;
+			if(coremod.type() == Mod::MOD_FOLDER)
+				continue;
+			// TODO: proper implementation would need to descend into folders.
+
+			out << "  " + coremod.filename().completeBaseName();
+		}
+		out << "";
+	}
+
+	auto & jarMods = m_profile->getJarMods();
+	if(jarMods.size())
+	{
+		out << "Jar Mods:";
+		for(auto & jarmod: jarMods)
+		{
+			auto displayname = jarmod->displayName(currentSystem);
+			auto realname = jarmod->filename(currentSystem);
+			if(displayname != realname)
+			{
+				out << "  " + displayname + " (" + realname + ")";
+			}
+			else
+			{
+				out << "  " + realname;
+			}
+		}
+		out << "";
+	}
+
+	auto params = processMinecraftArgs(nullptr);
+	out << "Params:";
+	out << "  " + params.join(' ');
+	out << "";
+
+	QString windowParams;
+	if (settings()->get("LaunchMaximized").toBool())
+	{
+		out << "Window size: max (if available)";
+	}
+	else
+	{
+		auto width = settings()->get("MinecraftWinWidth").toInt();
+		auto height = settings()->get("MinecraftWinHeight").toInt();
+		out << "Window size: " + QString::number(width) + " x " + QString::number(height);
+	}
+	out << "";
+	return out;
+}
+
 QMap<QString, QString> MinecraftInstance::createCensorFilterFromSession(AuthSessionPtr session)
 {
 	if(!session)
@@ -321,7 +760,7 @@ QString MinecraftInstance::getStatusbarDescription()
 	}
 
 	QString description;
-	description.append(tr("Minecraft %1 (%2)").arg(intendedVersionId()).arg(typeName()));
+	description.append(tr("Minecraft %1 (%2)").arg(getComponentVersion("net.minecraft")).arg(typeName()));
 	if(totalTimePlayed() > 0)
 	{
 		description.append(tr(", played for %1").arg(prettifyTimeDuration(totalTimePlayed())));
@@ -333,6 +772,11 @@ QString MinecraftInstance::getStatusbarDescription()
 	return description;
 }
 
+shared_qobject_ptr<Task> MinecraftInstance::createUpdateTask()
+{
+	return shared_qobject_ptr<Task>(new OneSixUpdate(this));
+}
+
 std::shared_ptr<LaunchTask> MinecraftInstance::createLaunchTask(AuthSessionPtr session)
 {
 	auto process = LaunchTask::create(std::dynamic_pointer_cast<MinecraftInstance>(getSharedPtr()));
@@ -352,7 +796,7 @@ std::shared_ptr<LaunchTask> MinecraftInstance::createLaunchTask(AuthSessionPtr s
 	}
 
 	// check launch method
-	QStringList validMethods = validLaunchMethods();
+	QStringList validMethods = {"LauncherPart", "DirectJava"};
 	QString method = launchMethod();
 	if(!validMethods.contains(method))
 	{
@@ -402,8 +846,21 @@ std::shared_ptr<LaunchTask> MinecraftInstance::createLaunchTask(AuthSessionPtr s
 
 	{
 		// actually launch the game
-		auto step = createMainLaunchStep(pptr, session);
-		process->appendStep(step);
+		auto method = launchMethod();
+		if(method == "LauncherPart")
+		{
+			auto step = std::make_shared<LauncherPartLaunch>(pptr);
+			step->setWorkingDirectory(minecraftRoot());
+			step->setAuthSession(session);
+			process->appendStep(step);
+		}
+		else if (method == "DirectJava")
+		{
+			auto step = std::make_shared<DirectJavaLaunch>(pptr);
+			step->setWorkingDirectory(minecraftRoot());
+			step->setAuthSession(session);
+			process->appendStep(step);
+		}
 	}
 
 	// run post-exit command if that's needed
@@ -432,5 +889,114 @@ JavaVersion MinecraftInstance::getJavaVersion() const
 	return JavaVersion(settings()->get("JavaVersion").toString());
 }
 
+bool MinecraftInstance::setComponentVersion(const QString& uid, const QString& version)
+{
+	if(uid == "net.minecraft")
+	{
+		settings()->set("IntendedVersion", version);
+	}
+	else if (uid == "org.lwjgl")
+	{
+		settings()->set("LWJGLVersion", version);
+	}
+	else if (uid == "net.minecraftforge")
+	{
+		settings()->set("ForgeVersion", version);
+	}
+	else if (uid == "com.mumfrey.liteloader")
+	{
+		settings()->set("LiteloaderVersion", version);
+	}
+	if(getMinecraftProfile())
+	{
+		clearProfile();
+	}
+	emit propertiesChanged(this);
+	return true;
+}
+
+QString MinecraftInstance::getComponentVersion(const QString& uid) const
+{
+	if(uid == "net.minecraft")
+	{
+		return settings()->get("IntendedVersion").toString();
+	}
+	else if(uid == "org.lwjgl")
+	{
+		return settings()->get("LWJGLVersion").toString();
+	}
+	else if(uid == "net.minecraftforge")
+	{
+		return settings()->get("ForgeVersion").toString();
+	}
+	else if(uid == "com.mumfrey.liteloader")
+	{
+		return settings()->get("LiteloaderVersion").toString();
+	}
+	return QString();
+}
+
+std::shared_ptr<ModList> MinecraftInstance::loaderModList() const
+{
+	if (!m_loader_mod_list)
+	{
+		m_loader_mod_list.reset(new ModList(loaderModsDir()));
+	}
+	m_loader_mod_list->update();
+	return m_loader_mod_list;
+}
+
+std::shared_ptr<ModList> MinecraftInstance::coreModList() const
+{
+	if (!m_core_mod_list)
+	{
+		m_core_mod_list.reset(new ModList(coreModsDir()));
+	}
+	m_core_mod_list->update();
+	return m_core_mod_list;
+}
+
+std::shared_ptr<ModList> MinecraftInstance::resourcePackList() const
+{
+	if (!m_resource_pack_list)
+	{
+		m_resource_pack_list.reset(new ModList(resourcePacksDir()));
+	}
+	m_resource_pack_list->update();
+	return m_resource_pack_list;
+}
+
+std::shared_ptr<ModList> MinecraftInstance::texturePackList() const
+{
+	if (!m_texture_pack_list)
+	{
+		m_texture_pack_list.reset(new ModList(texturePacksDir()));
+	}
+	m_texture_pack_list->update();
+	return m_texture_pack_list;
+}
+
+std::shared_ptr<WorldList> MinecraftInstance::worldList() const
+{
+	if (!m_world_list)
+	{
+		m_world_list.reset(new WorldList(worldDir()));
+	}
+	return m_world_list;
+}
+
+QList< Mod > MinecraftInstance::getJarMods() const
+{
+	QList<Mod> mods;
+	for (auto jarmod : m_profile->getJarMods())
+	{
+		QStringList jar, temp1, temp2, temp3;
+		jarmod->getApplicableFiles(currentSystem, jar, temp1, temp2, temp3, jarmodsPath().absolutePath());
+		// QString filePath = jarmodsPath().absoluteFilePath(jarmod->filename(currentSystem));
+		mods.push_back(Mod(QFileInfo(jar[0])));
+	}
+	return mods;
+}
+
 
 #include "MinecraftInstance.moc"
diff --git a/api/logic/minecraft/MinecraftInstance.h b/api/logic/minecraft/MinecraftInstance.h
index 7f967ce0..ebb22eb1 100644
--- a/api/logic/minecraft/MinecraftInstance.h
+++ b/api/logic/minecraft/MinecraftInstance.h
@@ -3,88 +3,117 @@
 #include <java/JavaVersion.h>
 #include "minecraft/Mod.h"
 #include <QProcess>
-
+#include <QDir>
 #include "multimc_logic_export.h"
 
 class ModList;
 class WorldList;
 class LaunchStep;
+class MinecraftProfile;
 
 class MULTIMC_LOGIC_EXPORT MinecraftInstance: public BaseInstance
 {
+	Q_OBJECT
 public:
 	MinecraftInstance(SettingsObjectPtr globalSettings, SettingsObjectPtr settings, const QString &rootDir);
 	virtual ~MinecraftInstance() {};
+	virtual void init() override;
 
-	/// Path to the instance's minecraft directory.
-	QString minecraftRoot() const;
-
-	/// Path to the instance's minecraft/bin directory.
-	QString binRoot() const;
-
-	//////  Mod Lists  //////
-	virtual std::shared_ptr<ModList> resourcePackList() const
-	{
-		return nullptr;
-	}
-	virtual std::shared_ptr<ModList> texturePackList() const
-	{
-		return nullptr;
-	}
-	virtual std::shared_ptr<WorldList> worldList() const
+	QString typeName() const override;
+	QSet<QString> traits() override;
+	bool canExport() const override
 	{
-		return nullptr;
-	}
-	/// get all jar mods applicable to this instance's jar
-	virtual QList<Mod> getJarMods() const
-	{
-		return QList<Mod>();
+		return true;
 	}
 
-	virtual std::shared_ptr<LaunchTask> createLaunchTask(AuthSessionPtr account) override;
-	virtual QString createLaunchScript(AuthSessionPtr session) = 0;
+	////// Directories and files //////
+	QString jarModsDir() const;
+	QString resourcePacksDir() const;
+	QString texturePacksDir() const;
+	QString loaderModsDir() const;
+	QString coreModsDir() const;
+	QString libDir() const;
+	QString worldDir() const;
+	QDir jarmodsPath() const;
+	QDir librariesPath() const;
+	QDir versionsPath() const;
+	QString instanceConfigFolder() const override;
+	QString minecraftRoot() const; // Path to the instance's minecraft directory.
+	QString binRoot() const; // Path to the instance's minecraft bin directory.
+	QString getNativePath() const; // where to put the natives during/before launch
+	QString getLocalLibraryPath() const; // where the instance-local libraries should be
+
+
+	//////  Profile management //////
+	void createProfile();
+	std::shared_ptr<MinecraftProfile> getMinecraftProfile() const;
+	void reloadProfile();
+	void clearProfile();
+	bool reload() override;
 
-	//FIXME: nuke?
-	virtual std::shared_ptr<BaseVersionList> versionList() const override;
 
+	//////  Mod Lists  //////
+	std::shared_ptr<ModList> loaderModList() const;
+	std::shared_ptr<ModList> coreModList() const;
+	std::shared_ptr<ModList> resourcePackList() const;
+	std::shared_ptr<ModList> texturePackList() const;
+	std::shared_ptr<WorldList> worldList() const;
+
+
+	//////  Launch stuff //////
+	shared_qobject_ptr<Task> createUpdateTask() override;
+	std::shared_ptr<LaunchTask> createLaunchTask(AuthSessionPtr account) override;
+	QStringList extraArguments() const override;
+	QStringList verboseDescription(AuthSessionPtr session) override;
+	QList<Mod> getJarMods() const;
+	QString createLaunchScript(AuthSessionPtr session);
 	/// get arguments passed to java
 	QStringList javaArguments() const;
 
 	/// get variables for launch command variable substitution/environment
-	virtual QMap<QString, QString> getVariables() const override;
+	QMap<QString, QString> getVariables() const override;
 
 	/// create an environment for launching processes
-	virtual QProcessEnvironment createEnvironment() override;
+	QProcessEnvironment createEnvironment() override;
 
 	/// guess log level from a line of minecraft log
-	virtual MessageLevel::Enum guessLevel(const QString &line, MessageLevel::Enum level) override;
-
-	virtual IPathMatcher::Ptr getLogFileMatcher() override;
+	MessageLevel::Enum guessLevel(const QString &line, MessageLevel::Enum level) override;
 
-	virtual QString getLogFileRoot() override;
+	IPathMatcher::Ptr getLogFileMatcher() override;
 
-	virtual QString getStatusbarDescription() override;
+	QString getLogFileRoot() override;
 
-	virtual QStringList getClassPath() const = 0;
-	virtual QStringList getNativeJars() const = 0;
+	QString getStatusbarDescription() override;
 
-	virtual QString getMainClass() const = 0;
+	virtual QStringList getClassPath() const;
+	virtual QStringList getNativeJars() const;
+	virtual QString getMainClass() const;
 
-	virtual QString getNativePath() const = 0;
+	virtual QStringList processMinecraftArgs(AuthSessionPtr account) const;
 
-	virtual QString getLocalLibraryPath() const = 0;
+	virtual JavaVersion getJavaVersion() const;
 
-	virtual QStringList processMinecraftArgs(AuthSessionPtr account) const = 0;
+	QString getComponentVersion(const QString &uid) const;
+	bool setComponentVersion(const QString &uid, const QString &version);
 
-	virtual JavaVersion getJavaVersion() const;
+signals:
+	void versionReloaded();
 
 protected:
 	QMap<QString, QString> createCensorFilterFromSession(AuthSessionPtr session);
-	virtual QStringList validLaunchMethods() = 0;
-	virtual QString launchMethod();
-	virtual std::shared_ptr<LaunchStep> createMainLaunchStep(LaunchTask *parent, AuthSessionPtr session) = 0;
+	QStringList validLaunchMethods();
+	QString launchMethod();
+
 private:
 	QString prettifyTimeDuration(int64_t duration);
+
+protected: // data
+	std::shared_ptr<MinecraftProfile> m_profile;
+	mutable std::shared_ptr<ModList> m_loader_mod_list;
+	mutable std::shared_ptr<ModList> m_core_mod_list;
+	mutable std::shared_ptr<ModList> m_resource_pack_list;
+	mutable std::shared_ptr<ModList> m_texture_pack_list;
+	mutable std::shared_ptr<WorldList> m_world_list;
 };
 
 typedef std::shared_ptr<MinecraftInstance> MinecraftInstancePtr;
diff --git a/api/logic/minecraft/MinecraftProfile.cpp b/api/logic/minecraft/MinecraftProfile.cpp
index f6e39f45..c883e8e9 100644
--- a/api/logic/minecraft/MinecraftProfile.cpp
+++ b/api/logic/minecraft/MinecraftProfile.cpp
@@ -22,47 +22,30 @@
 #include <QDebug>
 
 #include "minecraft/MinecraftProfile.h"
-#include "ProfileUtils.h"
-#include "ProfileStrategy.h"
 #include "Exception.h"
-
-MinecraftProfile::MinecraftProfile(ProfileStrategy *strategy)
+#include <minecraft/OneSixVersionFormat.h>
+#include <FileSystem.h>
+#include <QSaveFile>
+#include <Env.h>
+#include <meta/Index.h>
+#include <minecraft/MinecraftInstance.h>
+#include <QUuid>
+
+MinecraftProfile::MinecraftProfile(MinecraftInstance * instance)
 	: QAbstractListModel()
 {
-	setStrategy(strategy);
+	m_instance = instance;
 	clear();
 }
 
 MinecraftProfile::~MinecraftProfile()
 {
-	if(m_strategy)
-	{
-		delete m_strategy;
-	}
-}
-
-void MinecraftProfile::setStrategy(ProfileStrategy* strategy)
-{
-	Q_ASSERT(strategy != nullptr);
-
-	if(m_strategy != nullptr)
-	{
-		delete m_strategy;
-		m_strategy = nullptr;
-	}
-	m_strategy = strategy;
-	m_strategy->profile = this;
-}
-
-ProfileStrategy* MinecraftProfile::strategy()
-{
-	return m_strategy;
 }
 
 void MinecraftProfile::reload()
 {
 	beginResetModel();
-	m_strategy->load();
+	load_internal();
 	reapplyPatches();
 	endResetModel();
 }
@@ -107,7 +90,7 @@ bool MinecraftProfile::remove(const int index)
 		return false;
 	}
 
-	if(!m_strategy->removePatch(patch))
+	if(!removePatch_internal(patch))
 	{
 		qCritical() << "Patch" << patch->getID() << "could not be removed";
 		return false;
@@ -143,7 +126,7 @@ bool MinecraftProfile::customize(int index)
 		qDebug() << "Patch" << patch->getID() << "is not customizable";
 		return false;
 	}
-	if(!m_strategy->customizePatch(patch))
+	if(!customizePatch_internal(patch))
 	{
 		qCritical() << "Patch" << patch->getID() << "could not be customized";
 		return false;
@@ -163,7 +146,7 @@ bool MinecraftProfile::revertToBase(int index)
 		qDebug() << "Patch" << patch->getID() << "is not revertible";
 		return false;
 	}
-	if(!m_strategy->revertPatch(patch))
+	if(!revertPatch_internal(patch))
 	{
 		qCritical() << "Patch" << patch->getID() << "could not be reverted";
 		return false;
@@ -334,7 +317,7 @@ void MinecraftProfile::saveCurrentOrder() const
 			continue;
 		order.append(item->getID());
 	}
-	m_strategy->saveOrder(order);
+	saveOrder_internal(order);
 }
 
 void MinecraftProfile::move(const int index, const MoveDirection direction)
@@ -374,7 +357,7 @@ void MinecraftProfile::move(const int index, const MoveDirection direction)
 }
 void MinecraftProfile::resetOrder()
 {
-	m_strategy->resetOrder();
+	resetOrder_internal();
 	reload();
 }
 
@@ -661,12 +644,12 @@ void MinecraftProfile::getLibraryFiles(const QString& architecture, QStringList&
 
 void MinecraftProfile::installJarMods(QStringList selectedFiles)
 {
-	m_strategy->installJarMods(selectedFiles);
+	installJarMods_internal(selectedFiles);
 }
 
 void MinecraftProfile::installCustomJar(QString selectedFile)
 {
-	m_strategy->installCustomJar(selectedFile);
+	installCustomJar_internal(selectedFile);
 }
 
 
@@ -685,3 +668,389 @@ int MinecraftProfile::getFreeOrderNumber()
 	}
 	return largest + 1;
 }
+
+void MinecraftProfile::loadDefaultBuiltinPatches_internal()
+{
+	auto addBuiltinPatch = [&](const QString &uid, const QString intendedVersion, int order)
+	{
+		auto jsonFilePath = FS::PathCombine(m_instance->instanceRoot(), "patches" , uid + ".json");
+		// load up the base minecraft patch
+		ProfilePatchPtr profilePatch;
+		if(QFile::exists(jsonFilePath))
+		{
+			auto file = ProfileUtils::parseJsonFile(QFileInfo(jsonFilePath), false);
+			if(file->version.isEmpty())
+			{
+				file->version = intendedVersion;
+			}
+			profilePatch = std::make_shared<ProfilePatch>(file, jsonFilePath);
+			profilePatch->setVanilla(false);
+			profilePatch->setRevertible(true);
+		}
+		else
+		{
+			auto metaVersion = ENV.metadataIndex()->get(uid, intendedVersion);
+			profilePatch = std::make_shared<ProfilePatch>(metaVersion);
+			profilePatch->setVanilla(true);
+		}
+		profilePatch->setOrder(order);
+		appendPatch(profilePatch);
+	};
+	addBuiltinPatch("net.minecraft", m_instance->getComponentVersion("net.minecraft"), -2);
+	addBuiltinPatch("org.lwjgl", m_instance->getComponentVersion("org.lwjgl"), -1);
+}
+
+void MinecraftProfile::loadUserPatches_internal()
+{
+	// first, collect all patches (that are not builtins of OneSix) and load them
+	QMap<QString, ProfilePatchPtr> loadedPatches;
+	QDir patchesDir(FS::PathCombine(m_instance->instanceRoot(),"patches"));
+	for (auto info : patchesDir.entryInfoList(QStringList() << "*.json", QDir::Files))
+	{
+		// parse the file
+		qDebug() << "Reading" << info.fileName();
+		auto file = ProfileUtils::parseJsonFile(info, true);
+		// ignore builtins
+		if (file->uid == "net.minecraft")
+			continue;
+		if (file->uid == "org.lwjgl")
+			continue;
+		auto patch = std::make_shared<ProfilePatch>(file, info.filePath());
+		patch->setRemovable(true);
+		patch->setMovable(true);
+		if(ENV.metadataIndex()->hasUid(file->uid))
+		{
+			// FIXME: requesting a uid/list creates it in the index... this allows reverting to possibly invalid versions...
+			patch->setRevertible(true);
+		}
+		loadedPatches[file->uid] = patch;
+	}
+	// these are 'special'... if not already loaded from instance files, grab them from the metadata repo.
+	auto loadSpecial = [&](const QString & uid, int order)
+	{
+		auto patchVersion = m_instance->getComponentVersion(uid);
+		if(!patchVersion.isEmpty() && !loadedPatches.contains(uid))
+		{
+			auto patch = std::make_shared<ProfilePatch>(ENV.metadataIndex()->get(uid, patchVersion));
+			patch->setOrder(order);
+			patch->setVanilla(true);
+			patch->setRemovable(true);
+			patch->setMovable(true);
+			loadedPatches[uid] = patch;
+		}
+	};
+	loadSpecial("net.minecraftforge", 5);
+	loadSpecial("com.mumfrey.liteloader", 10);
+
+	// now add all the patches by user sort order
+	ProfileUtils::PatchOrder userOrder;
+	ProfileUtils::readOverrideOrders(FS::PathCombine(m_instance->instanceRoot(), "order.json"), userOrder);
+	for (auto uid : userOrder)
+	{
+		// ignore builtins
+		if (uid == "net.minecraft")
+			continue;
+		if (uid == "org.lwjgl")
+			continue;
+		// ordering has a patch that is gone?
+		if(!loadedPatches.contains(uid))
+		{
+			continue;
+		}
+		appendPatch(loadedPatches.take(uid));
+	}
+
+	// is there anything left to sort?
+	if(loadedPatches.isEmpty())
+	{
+		// TODO: save the order here?
+		return;
+	}
+
+	// inserting into multimap by order number as key sorts the patches and detects duplicates
+	QMultiMap<int, ProfilePatchPtr> files;
+	auto iter = loadedPatches.begin();
+	while(iter != loadedPatches.end())
+	{
+		files.insert((*iter)->getOrder(), *iter);
+		iter++;
+	}
+
+	// then just extract the patches and put them in the list
+	for (auto order : files.keys())
+	{
+		const auto &values = files.values(order);
+		for(auto &value: values)
+		{
+			// TODO: put back the insertion of problem messages here, so the user knows about the id duplication
+			appendPatch(value);
+		}
+	}
+	// TODO: save the order here?
+}
+
+
+void MinecraftProfile::load_internal()
+{
+	clearPatches();
+	loadDefaultBuiltinPatches_internal();
+	loadUserPatches_internal();
+}
+
+bool MinecraftProfile::saveOrder_internal(ProfileUtils::PatchOrder order) const
+{
+	return ProfileUtils::writeOverrideOrders(FS::PathCombine(m_instance->instanceRoot(), "order.json"), order);
+}
+
+bool MinecraftProfile::resetOrder_internal()
+{
+	return QDir(m_instance->instanceRoot()).remove("order.json");
+}
+
+bool MinecraftProfile::removePatch_internal(ProfilePatchPtr patch)
+{
+	bool ok = true;
+	// first, remove the patch file. this ensures it's not used anymore
+	auto fileName = patch->getFilename();
+	if(fileName.size())
+	{
+		QFile patchFile(fileName);
+		if(patchFile.exists() && !patchFile.remove())
+		{
+			qCritical() << "File" << fileName << "could not be removed because:" << patchFile.errorString();
+			return false;
+		}
+	}
+	if(!m_instance->getComponentVersion(patch->getID()).isEmpty())
+	{
+		m_instance->setComponentVersion(patch->getID(), QString());
+	}
+
+	// FIXME: we need a generic way of removing local resources, not just jar mods...
+	auto preRemoveJarMod = [&](LibraryPtr jarMod) -> bool
+	{
+		if (!jarMod->isLocal())
+		{
+			return true;
+		}
+		QStringList jar, temp1, temp2, temp3;
+		jarMod->getApplicableFiles(currentSystem, jar, temp1, temp2, temp3, m_instance->jarmodsPath().absolutePath());
+		QFileInfo finfo (jar[0]);
+		if(finfo.exists())
+		{
+			QFile jarModFile(jar[0]);
+			if(!jarModFile.remove())
+			{
+				qCritical() << "File" << jar[0] << "could not be removed because:" << jarModFile.errorString();
+				return false;
+			}
+			return true;
+		}
+		return true;
+	};
+
+	auto &jarMods = patch->getVersionFile()->jarMods;
+	for(auto &jarmod: jarMods)
+	{
+		ok &= preRemoveJarMod(jarmod);
+	}
+	return ok;
+}
+
+bool MinecraftProfile::customizePatch_internal(ProfilePatchPtr patch)
+{
+	if(patch->isCustom())
+	{
+		return false;
+	}
+
+	auto filename = FS::PathCombine(m_instance->instanceRoot(), "patches" , patch->getID() + ".json");
+	if(!FS::ensureFilePathExists(filename))
+	{
+		return false;
+	}
+	// FIXME: get rid of this try-catch.
+	try
+	{
+		QSaveFile jsonFile(filename);
+		if(!jsonFile.open(QIODevice::WriteOnly))
+		{
+			return false;
+		}
+		auto vfile = patch->getVersionFile();
+		if(!vfile)
+		{
+			return false;
+		}
+		auto document = OneSixVersionFormat::versionFileToJson(vfile, true);
+		jsonFile.write(document.toJson());
+		if(!jsonFile.commit())
+		{
+			return false;
+		}
+		load_internal();
+	}
+	catch (Exception &error)
+	{
+		qWarning() << "Version could not be loaded:" << error.cause();
+	}
+	return true;
+}
+
+bool MinecraftProfile::revertPatch_internal(ProfilePatchPtr patch)
+{
+	if(!patch->isCustom())
+	{
+		// already not custom
+		return true;
+	}
+	auto filename = patch->getFilename();
+	if(!QFile::exists(filename))
+	{
+		// already gone / not custom
+		return true;
+	}
+	// just kill the file and reload
+	bool result = QFile::remove(filename);
+	// FIXME: get rid of this try-catch.
+	try
+	{
+		load_internal();
+	}
+	catch (Exception &error)
+	{
+		qWarning() << "Version could not be loaded:" << error.cause();
+	}
+	return result;
+}
+
+bool MinecraftProfile::installJarMods_internal(QStringList filepaths)
+{
+	QString patchDir = FS::PathCombine(m_instance->instanceRoot(), "patches");
+	if(!FS::ensureFolderPathExists(patchDir))
+	{
+		return false;
+	}
+
+	if (!FS::ensureFolderPathExists(m_instance->jarModsDir()))
+	{
+		return false;
+	}
+
+	for(auto filepath:filepaths)
+	{
+		QFileInfo sourceInfo(filepath);
+		auto uuid = QUuid::createUuid();
+		QString id = uuid.toString().remove('{').remove('}');
+		QString target_filename = id + ".jar";
+		QString target_id = "org.multimc.jarmod." + id;
+		QString target_name = sourceInfo.completeBaseName() + " (jar mod)";
+		QString finalPath = FS::PathCombine(m_instance->jarModsDir(), target_filename);
+
+		QFileInfo targetInfo(finalPath);
+		if(targetInfo.exists())
+		{
+			return false;
+		}
+
+		if (!QFile::copy(sourceInfo.absoluteFilePath(),QFileInfo(finalPath).absoluteFilePath()))
+		{
+			return false;
+		}
+
+		auto f = std::make_shared<VersionFile>();
+		auto jarMod = std::make_shared<Library>();
+		jarMod->setRawName(GradleSpecifier("org.multimc.jarmods:" + id + ":1"));
+		jarMod->setFilename(target_filename);
+		jarMod->setDisplayName(sourceInfo.completeBaseName());
+		jarMod->setHint("local");
+		f->jarMods.append(jarMod);
+		f->name = target_name;
+		f->uid = target_id;
+		f->order = getFreeOrderNumber();
+		QString patchFileName = FS::PathCombine(patchDir, target_id + ".json");
+
+		QFile file(patchFileName);
+		if (!file.open(QFile::WriteOnly))
+		{
+			qCritical() << "Error opening" << file.fileName()
+						<< "for reading:" << file.errorString();
+			return false;
+		}
+		file.write(OneSixVersionFormat::versionFileToJson(f, true).toJson());
+		file.close();
+
+		auto patch = std::make_shared<ProfilePatch>(f, patchFileName);
+		patch->setMovable(true);
+		patch->setRemovable(true);
+		appendPatch(patch);
+	}
+	saveCurrentOrder();
+	reapplyPatches();
+	return true;
+}
+
+bool MinecraftProfile::installCustomJar_internal(QString filepath)
+{
+	QString patchDir = FS::PathCombine(m_instance->instanceRoot(), "patches");
+	if(!FS::ensureFolderPathExists(patchDir))
+	{
+		return false;
+	}
+
+	QString libDir = m_instance->getLocalLibraryPath();
+	if (!FS::ensureFolderPathExists(libDir))
+	{
+		return false;
+	}
+
+	auto specifier = GradleSpecifier("org.multimc:customjar:1");
+	QFileInfo sourceInfo(filepath);
+	QString target_filename = specifier.getFileName();
+	QString target_id = specifier.artifactId();
+	QString target_name = sourceInfo.completeBaseName() + " (custom jar)";
+	QString finalPath = FS::PathCombine(libDir, target_filename);
+
+	QFileInfo jarInfo(finalPath);
+	if (jarInfo.exists())
+	{
+		if(!QFile::remove(finalPath))
+		{
+			return false;
+		}
+	}
+	if (!QFile::copy(filepath, finalPath))
+	{
+		return false;
+	}
+
+	auto f = std::make_shared<VersionFile>();
+	auto jarMod = std::make_shared<Library>();
+	jarMod->setRawName(specifier);
+	jarMod->setDisplayName(sourceInfo.completeBaseName());
+	jarMod->setHint("local");
+	f->mainJar = jarMod;
+	f->name = target_name;
+	f->uid = target_id;
+	f->order = getFreeOrderNumber();
+	QString patchFileName = FS::PathCombine(patchDir, target_id + ".json");
+
+	QFile file(patchFileName);
+	if (!file.open(QFile::WriteOnly))
+	{
+		qCritical() << "Error opening" << file.fileName()
+					<< "for reading:" << file.errorString();
+		return false;
+	}
+	file.write(OneSixVersionFormat::versionFileToJson(f, true).toJson());
+	file.close();
+
+	auto patch = std::make_shared<ProfilePatch>(f, patchFileName);
+	patch->setMovable(true);
+	patch->setRemovable(true);
+	appendPatch(patch);
+
+	saveCurrentOrder();
+	reapplyPatches();
+	return true;
+}
\ No newline at end of file
diff --git a/api/logic/minecraft/MinecraftProfile.h b/api/logic/minecraft/MinecraftProfile.h
index e81ba499..da8dcbbc 100644
--- a/api/logic/minecraft/MinecraftProfile.h
+++ b/api/logic/minecraft/MinecraftProfile.h
@@ -23,13 +23,13 @@
 
 #include "Library.h"
 #include "ProfilePatch.h"
+#include "ProfileUtils.h"
 #include "BaseVersion.h"
 #include "MojangDownloadInfo.h"
 
 #include "multimc_logic_export.h"
 
-class ProfileStrategy;
-class OneSixInstance;
+class MinecraftInstance;
 
 
 class MULTIMC_LOGIC_EXPORT MinecraftProfile : public QAbstractListModel
@@ -37,12 +37,9 @@ class MULTIMC_LOGIC_EXPORT MinecraftProfile : public QAbstractListModel
 	Q_OBJECT
 
 public:
-	explicit MinecraftProfile(ProfileStrategy *strategy);
+	explicit MinecraftProfile(MinecraftInstance * instance);
 	virtual ~MinecraftProfile();
 
-	void setStrategy(ProfileStrategy * strategy);
-	ProfileStrategy *strategy();
-
 	virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
 	virtual QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
 	virtual int rowCount(const QModelIndex &parent = QModelIndex()) const override;
@@ -138,6 +135,19 @@ public:
 	/// Add the patch object to the internal list of patches
 	void appendPatch(ProfilePatchPtr patch);
 
+private:
+	void load_internal();
+	bool resetOrder_internal();
+	bool saveOrder_internal(ProfileUtils::PatchOrder order) const;
+	bool installJarMods_internal(QStringList filepaths);
+    bool installCustomJar_internal(QString filepath);
+	bool removePatch_internal(ProfilePatchPtr patch);
+	bool customizePatch_internal(ProfilePatchPtr patch);
+	bool revertPatch_internal(ProfilePatchPtr patch);
+	void loadDefaultBuiltinPatches_internal();
+	void loadUserPatches_internal();
+	void upgradeDeprecatedFiles_internal();
+
 private: /* data */
 	/// the version of Minecraft - jar to use
 	QString m_minecraftVersion;
@@ -185,30 +195,9 @@ private: /* data */
 
 	ProblemSeverity m_problemSeverity = ProblemSeverity::None;
 
-	/*
-	FIXME: add support for those rules here? Looks like a pile of quick hacks to me though.
-
-	"rules": [
-		{
-		"action": "allow"
-		},
-		{
-		"action": "disallow",
-		"os": {
-			"name": "osx",
-			"version": "^10\\.5\\.\\d$"
-		}
-		}
-	],
-	"incompatibilityReason": "There is a bug in LWJGL which makes it incompatible with OSX
-	10.5.8. Please go to New Profile and use 1.5.2 for now. Sorry!"
-	}
-	*/
-	// QList<Rule> rules;
-
 	/// list of attached profile patches
 	QList<ProfilePatchPtr> m_patches;
 
-	/// strategy used for profile operations
-	ProfileStrategy *m_strategy = nullptr;
+	// the instance this belongs to
+	MinecraftInstance *m_instance;
 };
diff --git a/api/logic/minecraft/onesix/OneSixUpdate.cpp b/api/logic/minecraft/MinecraftUpdate.cpp
index 230877ef..61dce779 100644
--- a/api/logic/minecraft/onesix/OneSixUpdate.cpp
+++ b/api/logic/minecraft/MinecraftUpdate.cpp
@@ -15,8 +15,8 @@
 
 #include "Env.h"
 #include <minecraft/forge/ForgeXzDownload.h>
-#include "OneSixUpdate.h"
-#include "OneSixInstance.h"
+#include "MinecraftUpdate.h"
+#include "MinecraftInstance.h"
 
 #include <QFile>
 #include <QFileInfo>
@@ -37,7 +37,7 @@
 #include <meta/Index.h>
 #include <meta/Version.h>
 
-OneSixUpdate::OneSixUpdate(OneSixInstance *inst, QObject *parent) : Task(parent), m_inst(inst)
+OneSixUpdate::OneSixUpdate(MinecraftInstance *inst, QObject *parent) : Task(parent), m_inst(inst)
 {
 	// create folders
 	{
diff --git a/api/logic/minecraft/onesix/OneSixUpdate.h b/api/logic/minecraft/MinecraftUpdate.h
index f879f19e..23c7da89 100644
--- a/api/logic/minecraft/onesix/OneSixUpdate.h
+++ b/api/logic/minecraft/MinecraftUpdate.h
@@ -25,13 +25,13 @@
 #include <quazip.h>
 
 class MinecraftVersion;
-class OneSixInstance;
+class MinecraftInstance;
 
 class OneSixUpdate : public Task
 {
 	Q_OBJECT
 public:
-	explicit OneSixUpdate(OneSixInstance *inst, QObject *parent = 0);
+	explicit OneSixUpdate(MinecraftInstance *inst, QObject *parent = 0);
 	void executeTask() override;
 	bool canAbort() const override;
 
@@ -45,7 +45,7 @@ private:
 	void next();
 
 private:
-	OneSixInstance *m_inst = nullptr;
+	MinecraftInstance *m_inst = nullptr;
 	QList<std::shared_ptr<Task>> m_tasks;
 	QString m_preFailure;
 	int m_currentTask = -1;
diff --git a/api/logic/minecraft/MojangVersionFormat.cpp b/api/logic/minecraft/MojangVersionFormat.cpp
index f73c8e49..a0aa2894 100644
--- a/api/logic/minecraft/MojangVersionFormat.cpp
+++ b/api/logic/minecraft/MojangVersionFormat.cpp
@@ -1,5 +1,5 @@
 #include "MojangVersionFormat.h"
-#include "onesix/OneSixVersionFormat.h"
+#include "OneSixVersionFormat.h"
 #include "MojangDownloadInfo.h"
 
 #include "Json.h"
diff --git a/api/logic/minecraft/onesix/OneSixVersionFormat.cpp b/api/logic/minecraft/OneSixVersionFormat.cpp
index 7ebf514f..7ebf514f 100644
--- a/api/logic/minecraft/onesix/OneSixVersionFormat.cpp
+++ b/api/logic/minecraft/OneSixVersionFormat.cpp
diff --git a/api/logic/minecraft/onesix/OneSixVersionFormat.h b/api/logic/minecraft/OneSixVersionFormat.h
index 64f18da8..64f18da8 100644
--- a/api/logic/minecraft/onesix/OneSixVersionFormat.h
+++ b/api/logic/minecraft/OneSixVersionFormat.h
diff --git a/api/logic/minecraft/ProfileStrategy.h b/api/logic/minecraft/ProfileStrategy.h
deleted file mode 100644
index 09a09f24..00000000
--- a/api/logic/minecraft/ProfileStrategy.h
+++ /dev/null
@@ -1,39 +0,0 @@
-#pragma once
-
-#include "ProfileUtils.h"
-#include "ProfilePatch.h"
-
-class MinecraftProfile;
-
-class ProfileStrategy
-{
-	friend class MinecraftProfile;
-public:
-	virtual ~ProfileStrategy(){};
-
-	/// load the patch files into the profile
-	virtual void load() = 0;
-
-	/// reset the order of patches
-	virtual bool resetOrder() = 0;
-
-	/// save the order of patches, given the order
-	virtual bool saveOrder(ProfileUtils::PatchOrder order) = 0;
-
-	/// install a list of jar mods into the instance
-	virtual bool installJarMods(QStringList filepaths) = 0;
-
-	/// install a custom jar (replaces the one from the Minecraft component)
-	virtual bool installCustomJar(QString filepath) = 0;
-
-	/// remove any files or records that constitute the version patch
-	virtual bool removePatch(ProfilePatchPtr jarMod) = 0;
-
-	/// make the patch custom, if possible
-	virtual bool customizePatch(ProfilePatchPtr patch) = 0;
-
-	/// revert the custom patch to 'vanilla', if possible
-	virtual bool revertPatch(ProfilePatchPtr patch) = 0;
-protected:
-	MinecraftProfile *profile;
-};
diff --git a/api/logic/minecraft/ProfileUtils.cpp b/api/logic/minecraft/ProfileUtils.cpp
index 8c5bc052..c8722f7e 100644
--- a/api/logic/minecraft/ProfileUtils.cpp
+++ b/api/logic/minecraft/ProfileUtils.cpp
@@ -1,6 +1,6 @@
 #include "ProfileUtils.h"
 #include "minecraft/VersionFilterData.h"
-#include "minecraft/onesix/OneSixVersionFormat.h"
+#include "minecraft/OneSixVersionFormat.h"
 #include "Json.h"
 #include <QDebug>
 
diff --git a/api/logic/minecraft/launch/ModMinecraftJar.cpp b/api/logic/minecraft/launch/ModMinecraftJar.cpp
index b56f6fca..497a9d2d 100644
--- a/api/logic/minecraft/launch/ModMinecraftJar.cpp
+++ b/api/logic/minecraft/launch/ModMinecraftJar.cpp
@@ -14,31 +14,47 @@
  */
 
 #include "ModMinecraftJar.h"
-#include <launch/LaunchTask.h>
-#include <QStandardPaths>
+#include "launch/LaunchTask.h"
+#include "MMCZip.h"
+#include "minecraft/OpSys.h"
+#include "FileSystem.h"
+#include "minecraft/MinecraftInstance.h"
+#include "minecraft/MinecraftProfile.h"
 
 void ModMinecraftJar::executeTask()
 {
-	m_jarModTask = m_parent->instance()->createJarModdingTask();
-	if(m_jarModTask)
+	auto m_inst = std::dynamic_pointer_cast<MinecraftInstance>(m_parent->instance());
+
+	// nuke obsolete stripped jar(s) if needed
+	if(!FS::ensureFolderPathExists(m_inst->binRoot()))
 	{
-		connect(m_jarModTask.get(), SIGNAL(finished()), this, SLOT(jarModdingFinished()));
-		m_jarModTask->start();
-		return;
+		emitFailed(tr("Couldn't create the bin folder for Minecraft.jar"));
 	}
-	emitSucceeded();
-}
-
-void ModMinecraftJar::jarModdingFinished()
-{
-	if(m_jarModTask->wasSuccessful())
+	auto finalJarPath = QDir(m_inst->binRoot()).absoluteFilePath("minecraft.jar");
+	QFile finalJar(finalJarPath);
+	if(finalJar.exists())
 	{
-		emitSucceeded();
+		if(!finalJar.remove())
+		{
+			emitFailed(tr("Couldn't remove stale jar file: %1").arg(finalJarPath));
+			return;
+		}
 	}
-	else
+
+	// create temporary modded jar, if needed
+	auto profile = m_inst->getMinecraftProfile();
+	auto jarMods = m_inst->getJarMods();
+	if(jarMods.size())
 	{
-		QString reason = tr("jar modding failed because: %1.\n\n").arg(m_jarModTask->failReason());
-		emit logLine(reason, MessageLevel::Fatal);
-		emitFailed(reason);
+		auto mainJar = profile->getMainJar();
+		QStringList jars, temp1, temp2, temp3, temp4;
+		mainJar->getApplicableFiles(currentSystem, jars, temp1, temp2, temp3, m_inst->getLocalLibraryPath());
+		auto sourceJarPath = jars[0];
+		if(!MMCZip::createModdedJar(sourceJarPath, finalJarPath, jarMods))
+		{
+			emitFailed(tr("Failed to create the custom Minecraft jar file."));
+			return;
+		}
 	}
+	emitSucceeded();
 }
diff --git a/api/logic/minecraft/launch/ModMinecraftJar.h b/api/logic/minecraft/launch/ModMinecraftJar.h
index 1196c487..ab8d7dca 100644
--- a/api/logic/minecraft/launch/ModMinecraftJar.h
+++ b/api/logic/minecraft/launch/ModMinecraftJar.h
@@ -18,7 +18,6 @@
 #include <launch/LaunchStep.h>
 #include <memory>
 
-// FIXME: temporary wrapper for existing task.
 class ModMinecraftJar: public LaunchStep
 {
 	Q_OBJECT
@@ -31,9 +30,4 @@ public:
 	{
 		return false;
 	}
-private slots:
-	void jarModdingFinished();
-
-private:
-	std::shared_ptr<Task> m_jarModTask;
 };
diff --git a/api/logic/minecraft/onesix/OneSixInstance.cpp b/api/logic/minecraft/onesix/OneSixInstance.cpp
deleted file mode 100644
index 34253f02..00000000
--- a/api/logic/minecraft/onesix/OneSixInstance.cpp
+++ /dev/null
@@ -1,706 +0,0 @@
-/* Copyright 2013-2017 MultiMC Contributors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <QDebug>
-#include <minecraft/launch/DirectJavaLaunch.h>
-#include <minecraft/launch/LauncherPartLaunch.h>
-#include <Env.h>
-
-#include "OneSixInstance.h"
-#include "OneSixUpdate.h"
-#include "OneSixProfileStrategy.h"
-
-#include "minecraft/MinecraftProfile.h"
-#include "minecraft/launch/ModMinecraftJar.h"
-#include "MMCZip.h"
-
-#include "minecraft/AssetsUtils.h"
-#include "minecraft/WorldList.h"
-#include <FileSystem.h>
-
-OneSixInstance::OneSixInstance(SettingsObjectPtr globalSettings, SettingsObjectPtr settings, const QString &rootDir)
-	: MinecraftInstance(globalSettings, settings, rootDir)
-{
-	// set explicitly during instance creation
-	m_settings->registerSetting({"IntendedVersion", "MinecraftVersion"}, "");
-
-	// defaults to the version we've been using for years (2.9.1)
-	m_settings->registerSetting("LWJGLVersion", "2.9.1");
-
-	// optionals
-	m_settings->registerSetting("ForgeVersion", "");
-	m_settings->registerSetting("LiteloaderVersion", "");
-}
-
-void OneSixInstance::init()
-{
-	createProfile();
-}
-
-void OneSixInstance::createProfile()
-{
-	m_profile.reset(new MinecraftProfile(new OneSixProfileStrategy(this)));
-}
-
-QSet<QString> OneSixInstance::traits()
-{
-	auto version = getMinecraftProfile();
-	if (!version)
-	{
-		return {"version-incomplete"};
-	}
-	else
-	{
-		return version->getTraits();
-	}
-}
-
-shared_qobject_ptr<Task> OneSixInstance::createUpdateTask()
-{
-	return shared_qobject_ptr<Task>(new OneSixUpdate(this));
-}
-
-QString replaceTokensIn(QString text, QMap<QString, QString> with)
-{
-	QString result;
-	QRegExp token_regexp("\\$\\{(.+)\\}");
-	token_regexp.setMinimal(true);
-	QStringList list;
-	int tail = 0;
-	int head = 0;
-	while ((head = token_regexp.indexIn(text, head)) != -1)
-	{
-		result.append(text.mid(tail, head - tail));
-		QString key = token_regexp.cap(1);
-		auto iter = with.find(key);
-		if (iter != with.end())
-		{
-			result.append(*iter);
-		}
-		head += token_regexp.matchedLength();
-		tail = head;
-	}
-	result.append(text.mid(tail));
-	return result;
-}
-
-QStringList OneSixInstance::processMinecraftArgs(AuthSessionPtr session) const
-{
-	QString args_pattern = m_profile->getMinecraftArguments();
-	for (auto tweaker : m_profile->getTweakers())
-	{
-		args_pattern += " --tweakClass " + tweaker;
-	}
-
-	QMap<QString, QString> token_mapping;
-	// yggdrasil!
-	if(session)
-	{
-		token_mapping["auth_username"] = session->username;
-		token_mapping["auth_session"] = session->session;
-		token_mapping["auth_access_token"] = session->access_token;
-		token_mapping["auth_player_name"] = session->player_name;
-		token_mapping["auth_uuid"] = session->uuid;
-		token_mapping["user_properties"] = session->serializeUserProperties();
-		token_mapping["user_type"] = session->user_type;
-	}
-
-	// blatant self-promotion.
-	token_mapping["profile_name"] = token_mapping["version_name"] = "MultiMC5";
-	if(m_profile->isVanilla())
-	{
-		token_mapping["version_type"] = m_profile->getMinecraftVersionType();
-	}
-	else
-	{
-		token_mapping["version_type"] = "custom";
-	}
-
-	QString absRootDir = QDir(minecraftRoot()).absolutePath();
-	token_mapping["game_directory"] = absRootDir;
-	QString absAssetsDir = QDir("assets/").absolutePath();
-	auto assets = m_profile->getMinecraftAssets();
-	token_mapping["game_assets"] = AssetsUtils::reconstructAssets(assets->id).absolutePath();
-
-	// 1.7.3+ assets tokens
-	token_mapping["assets_root"] = absAssetsDir;
-	token_mapping["assets_index_name"] = assets->id;
-
-	QStringList parts = args_pattern.split(' ', QString::SkipEmptyParts);
-	for (int i = 0; i < parts.length(); i++)
-	{
-		parts[i] = replaceTokensIn(parts[i], token_mapping);
-	}
-	return parts;
-}
-
-QString OneSixInstance::getNativePath() const
-{
-	QDir natives_dir(FS::PathCombine(instanceRoot(), "natives/"));
-	return natives_dir.absolutePath();
-}
-
-QString OneSixInstance::getLocalLibraryPath() const
-{
-	QDir libraries_dir(FS::PathCombine(instanceRoot(), "libraries/"));
-	return libraries_dir.absolutePath();
-}
-
-QString OneSixInstance::createLaunchScript(AuthSessionPtr session)
-{
-	QString launchScript;
-
-	if (!m_profile)
-		return nullptr;
-
-	auto mainClass = getMainClass();
-	if (!mainClass.isEmpty())
-	{
-		launchScript += "mainClass " + mainClass + "\n";
-	}
-	auto appletClass = m_profile->getAppletClass();
-	if (!appletClass.isEmpty())
-	{
-		launchScript += "appletClass " + appletClass + "\n";
-	}
-
-	// generic minecraft params
-	for (auto param : processMinecraftArgs(session))
-	{
-		launchScript += "param " + param + "\n";
-	}
-
-	// window size, title and state, legacy
-	{
-		QString windowParams;
-		if (settings()->get("LaunchMaximized").toBool())
-			windowParams = "max";
-		else
-			windowParams = QString("%1x%2")
-							   .arg(settings()->get("MinecraftWinWidth").toInt())
-							   .arg(settings()->get("MinecraftWinHeight").toInt());
-		launchScript += "windowTitle " + windowTitle() + "\n";
-		launchScript += "windowParams " + windowParams + "\n";
-	}
-
-	// legacy auth
-	if(session)
-	{
-		launchScript += "userName " + session->player_name + "\n";
-		launchScript += "sessionId " + session->session + "\n";
-	}
-
-	// libraries and class path.
-	{
-		QStringList jars, nativeJars;
-		auto javaArchitecture = settings()->get("JavaArchitecture").toString();
-		m_profile->getLibraryFiles(javaArchitecture, jars, nativeJars, getLocalLibraryPath(), binRoot());
-		for(auto file: jars)
-		{
-			launchScript += "cp " + file + "\n";
-		}
-		for(auto file: nativeJars)
-		{
-			launchScript += "ext " + file + "\n";
-		}
-		launchScript += "natives " + getNativePath() + "\n";
-	}
-
-	for (auto trait : m_profile->getTraits())
-	{
-		launchScript += "traits " + trait + "\n";
-	}
-	launchScript += "launcher onesix\n";
-	return launchScript;
-}
-
-QStringList OneSixInstance::verboseDescription(AuthSessionPtr session)
-{
-	QStringList out;
-	out << "Main Class:" << "  " + getMainClass() << "";
-	out << "Native path:" << "  " + getNativePath() << "";
-
-
-	auto alltraits = traits();
-	if(alltraits.size())
-	{
-		out << "Traits:";
-		for (auto trait : alltraits)
-		{
-			out << "traits " + trait;
-		}
-		out << "";
-	}
-
-	// libraries and class path.
-	{
-		out << "Libraries:";
-		QStringList jars, nativeJars;
-		auto javaArchitecture = settings()->get("JavaArchitecture").toString();
-		m_profile->getLibraryFiles(javaArchitecture, jars, nativeJars, getLocalLibraryPath(), binRoot());
-		auto printLibFile = [&](const QString & path)
-		{
-			QFileInfo info(path);
-			if(info.exists())
-			{
-				out << "  " + path;
-			}
-			else
-			{
-				out << "  " + path + " (missing)";
-			}
-		};
-		for(auto file: jars)
-		{
-			printLibFile(file);
-		}
-		out << "";
-		out << "Native libraries:";
-		for(auto file: nativeJars)
-		{
-			printLibFile(file);
-		}
-		out << "";
-	}
-
-	if(loaderModList()->size())
-	{
-		out << "Mods:";
-		for(auto & mod: loaderModList()->allMods())
-		{
-			if(!mod.enabled())
-				continue;
-			if(mod.type() == Mod::MOD_FOLDER)
-				continue;
-			// TODO: proper implementation would need to descend into folders.
-
-			out << "  " + mod.filename().completeBaseName();
-		}
-		out << "";
-	}
-
-	if(coreModList()->size())
-	{
-		out << "Core Mods:";
-		for(auto & coremod: coreModList()->allMods())
-		{
-			if(!coremod.enabled())
-				continue;
-			if(coremod.type() == Mod::MOD_FOLDER)
-				continue;
-			// TODO: proper implementation would need to descend into folders.
-
-			out << "  " + coremod.filename().completeBaseName();
-		}
-		out << "";
-	}
-
-	auto & jarMods = m_profile->getJarMods();
-	if(jarMods.size())
-	{
-		out << "Jar Mods:";
-		for(auto & jarmod: jarMods)
-		{
-			auto displayname = jarmod->displayName(currentSystem);
-			auto realname = jarmod->filename(currentSystem);
-			if(displayname != realname)
-			{
-				out << "  " + displayname + " (" + realname + ")";
-			}
-			else
-			{
-				out << "  " + realname;
-			}
-		}
-		out << "";
-	}
-
-	auto params = processMinecraftArgs(nullptr);
-	out << "Params:";
-	out << "  " + params.join(' ');
-	out << "";
-
-	QString windowParams;
-	if (settings()->get("LaunchMaximized").toBool())
-	{
-		out << "Window size: max (if available)";
-	}
-	else
-	{
-		auto width = settings()->get("MinecraftWinWidth").toInt();
-		auto height = settings()->get("MinecraftWinHeight").toInt();
-		out << "Window size: " + QString::number(width) + " x " + QString::number(height);
-	}
-	out << "";
-	return out;
-}
-
-
-std::shared_ptr<LaunchStep> OneSixInstance::createMainLaunchStep(LaunchTask * parent, AuthSessionPtr session)
-{
-	auto method = launchMethod();
-	if(method == "LauncherPart")
-	{
-		auto step = std::make_shared<LauncherPartLaunch>(parent);
-		step->setAuthSession(session);
-		step->setWorkingDirectory(minecraftRoot());
-		return step;
-	}
-	else if (method == "DirectJava")
-	{
-		auto step = std::make_shared<DirectJavaLaunch>(parent);
-		step->setWorkingDirectory(minecraftRoot());
-		step->setAuthSession(session);
-		return step;
-	}
-	return nullptr;
-}
-
-class JarModTask : public Task
-{
-	Q_OBJECT
-public:
-	explicit JarModTask(std::shared_ptr<OneSixInstance> inst) : Task(nullptr), m_inst(inst)
-	{
-	}
-	virtual void executeTask()
-	{
-		auto profile = m_inst->getMinecraftProfile();
-		// nuke obsolete stripped jar(s) if needed
-		QString version_id = profile->getMinecraftVersion();
-		if(!FS::ensureFolderPathExists(m_inst->binRoot()))
-		{
-			emitFailed(tr("Couldn't create the bin folder for Minecraft.jar"));
-		}
-		auto finalJarPath = QDir(m_inst->binRoot()).absoluteFilePath("minecraft.jar");
-		QFile finalJar(finalJarPath);
-		if(finalJar.exists())
-		{
-			if(!finalJar.remove())
-			{
-				emitFailed(tr("Couldn't remove stale jar file: %1").arg(finalJarPath));
-				return;
-			}
-		}
-
-		// create temporary modded jar, if needed
-		auto jarMods = m_inst->getJarMods();
-		if(jarMods.size())
-		{
-			auto mainJar = profile->getMainJar();
-			QStringList jars, temp1, temp2, temp3, temp4;
-			mainJar->getApplicableFiles(currentSystem, jars, temp1, temp2, temp3, m_inst->getLocalLibraryPath());
-			auto sourceJarPath = jars[0];
-			if(!MMCZip::createModdedJar(sourceJarPath, finalJarPath, jarMods))
-			{
-				emitFailed(tr("Failed to create the custom Minecraft jar file."));
-				return;
-			}
-		}
-		emitSucceeded();
-	}
-	std::shared_ptr<OneSixInstance> m_inst;
-};
-
-std::shared_ptr<Task> OneSixInstance::createJarModdingTask()
-{
-	return std::make_shared<JarModTask>(std::dynamic_pointer_cast<OneSixInstance>(shared_from_this()));
-}
-
-std::shared_ptr<ModList> OneSixInstance::loaderModList() const
-{
-	if (!m_loader_mod_list)
-	{
-		m_loader_mod_list.reset(new ModList(loaderModsDir()));
-	}
-	m_loader_mod_list->update();
-	return m_loader_mod_list;
-}
-
-std::shared_ptr<ModList> OneSixInstance::coreModList() const
-{
-	if (!m_core_mod_list)
-	{
-		m_core_mod_list.reset(new ModList(coreModsDir()));
-	}
-	m_core_mod_list->update();
-	return m_core_mod_list;
-}
-
-std::shared_ptr<ModList> OneSixInstance::resourcePackList() const
-{
-	if (!m_resource_pack_list)
-	{
-		m_resource_pack_list.reset(new ModList(resourcePacksDir()));
-	}
-	m_resource_pack_list->update();
-	return m_resource_pack_list;
-}
-
-std::shared_ptr<ModList> OneSixInstance::texturePackList() const
-{
-	if (!m_texture_pack_list)
-	{
-		m_texture_pack_list.reset(new ModList(texturePacksDir()));
-	}
-	m_texture_pack_list->update();
-	return m_texture_pack_list;
-}
-
-std::shared_ptr<WorldList> OneSixInstance::worldList() const
-{
-	if (!m_world_list)
-	{
-		m_world_list.reset(new WorldList(worldDir()));
-	}
-	return m_world_list;
-}
-
-bool OneSixInstance::setIntendedVersionId(QString version)
-{
-	return setComponentVersion("net.minecraft", version);
-}
-
-QString OneSixInstance::intendedVersionId() const
-{
-	return getComponentVersion("net.minecraft");
-}
-
-bool OneSixInstance::setComponentVersion(const QString& uid, const QString& version)
-{
-	if(uid == "net.minecraft")
-	{
-		settings()->set("IntendedVersion", version);
-	}
-	else if (uid == "org.lwjgl")
-	{
-		settings()->set("LWJGLVersion", version);
-	}
-	else if (uid == "net.minecraftforge")
-	{
-		settings()->set("ForgeVersion", version);
-	}
-	else if (uid == "com.mumfrey.liteloader")
-	{
-		settings()->set("LiteloaderVersion", version);
-	}
-	if(getMinecraftProfile())
-	{
-		clearProfile();
-	}
-	emit propertiesChanged(this);
-	return true;
-}
-
-QString OneSixInstance::getComponentVersion(const QString& uid) const
-{
-	if(uid == "net.minecraft")
-	{
-		return settings()->get("IntendedVersion").toString();
-	}
-	else if(uid == "org.lwjgl")
-	{
-		return settings()->get("LWJGLVersion").toString();
-	}
-	else if(uid == "net.minecraftforge")
-	{
-		return settings()->get("ForgeVersion").toString();
-	}
-	else if(uid == "com.mumfrey.liteloader")
-	{
-		return settings()->get("LiteloaderVersion").toString();
-	}
-	return QString();
-}
-
-QList< Mod > OneSixInstance::getJarMods() const
-{
-	QList<Mod> mods;
-	for (auto jarmod : m_profile->getJarMods())
-	{
-		QStringList jar, temp1, temp2, temp3;
-		jarmod->getApplicableFiles(currentSystem, jar, temp1, temp2, temp3, jarmodsPath().absolutePath());
-		// QString filePath = jarmodsPath().absoluteFilePath(jarmod->filename(currentSystem));
-		mods.push_back(Mod(QFileInfo(jar[0])));
-	}
-	return mods;
-}
-
-void OneSixInstance::setShouldUpdate(bool)
-{
-}
-
-bool OneSixInstance::shouldUpdate() const
-{
-	return true;
-}
-
-QString OneSixInstance::currentVersionId() const
-{
-	return intendedVersionId();
-}
-
-void OneSixInstance::reloadProfile()
-{
-	m_profile->reload();
-	setVersionBroken(m_profile->getProblemSeverity() == ProblemSeverity::Error);
-	emit versionReloaded();
-}
-
-void OneSixInstance::clearProfile()
-{
-	m_profile->clear();
-	emit versionReloaded();
-}
-
-std::shared_ptr<MinecraftProfile> OneSixInstance::getMinecraftProfile() const
-{
-	return m_profile;
-}
-
-QDir OneSixInstance::librariesPath() const
-{
-	return QDir::current().absoluteFilePath("libraries");
-}
-
-QDir OneSixInstance::jarmodsPath() const
-{
-	return QDir(jarModsDir());
-}
-
-QDir OneSixInstance::versionsPath() const
-{
-	return QDir::current().absoluteFilePath("versions");
-}
-
-bool OneSixInstance::providesVersionFile() const
-{
-	return false;
-}
-
-bool OneSixInstance::reload()
-{
-	if (BaseInstance::reload())
-	{
-		try
-		{
-			reloadProfile();
-			return true;
-		}
-		catch (...)
-		{
-			return false;
-		}
-	}
-	return false;
-}
-
-QString OneSixInstance::loaderModsDir() const
-{
-	return FS::PathCombine(minecraftRoot(), "mods");
-}
-
-QString OneSixInstance::coreModsDir() const
-{
-	return FS::PathCombine(minecraftRoot(), "coremods");
-}
-
-QString OneSixInstance::resourcePacksDir() const
-{
-	return FS::PathCombine(minecraftRoot(), "resourcepacks");
-}
-
-QString OneSixInstance::texturePacksDir() const
-{
-	return FS::PathCombine(minecraftRoot(), "texturepacks");
-}
-
-QString OneSixInstance::instanceConfigFolder() const
-{
-	return FS::PathCombine(minecraftRoot(), "config");
-}
-
-QString OneSixInstance::jarModsDir() const
-{
-	return FS::PathCombine(instanceRoot(), "jarmods");
-}
-
-QString OneSixInstance::FMLlibDir() const
-{
-	return FS::PathCombine(minecraftRoot(), "lib");
-}
-
-QString OneSixInstance::customLibrariesDir() const
-{
-	return FS::PathCombine(instanceRoot(), "libraries");
-}
-
-QString OneSixInstance::worldDir() const
-{
-	return FS::PathCombine(minecraftRoot(), "saves");
-}
-
-QStringList OneSixInstance::extraArguments() const
-{
-	auto list = BaseInstance::extraArguments();
-	auto version = getMinecraftProfile();
-	if (!version)
-		return list;
-	auto jarMods = getJarMods();
-	if (!jarMods.isEmpty())
-	{
-		list.append({"-Dfml.ignoreInvalidMinecraftCertificates=true",
-					 "-Dfml.ignorePatchDiscrepancies=true"});
-	}
-	return list;
-}
-
-std::shared_ptr<OneSixInstance> OneSixInstance::getSharedPtr()
-{
-	return std::dynamic_pointer_cast<OneSixInstance>(BaseInstance::getSharedPtr());
-}
-
-QString OneSixInstance::typeName() const
-{
-	return tr("OneSix");
-}
-
-QStringList OneSixInstance::validLaunchMethods()
-{
-	return {"LauncherPart", "DirectJava"};
-}
-
-QStringList OneSixInstance::getClassPath() const
-{
-	QStringList jars, nativeJars;
-	auto javaArchitecture = settings()->get("JavaArchitecture").toString();
-	m_profile->getLibraryFiles(javaArchitecture, jars, nativeJars, getLocalLibraryPath(), binRoot());
-	return jars;
-}
-
-QString OneSixInstance::getMainClass() const
-{
-	return m_profile->getMainClass();
-}
-
-QStringList OneSixInstance::getNativeJars() const
-{
-	QStringList jars, nativeJars;
-	auto javaArchitecture = settings()->get("JavaArchitecture").toString();
-	m_profile->getLibraryFiles(javaArchitecture, jars, nativeJars, getLocalLibraryPath(), binRoot());
-	return nativeJars;
-}
-
-#include "OneSixInstance.moc"
diff --git a/api/logic/minecraft/onesix/OneSixInstance.h b/api/logic/minecraft/onesix/OneSixInstance.h
deleted file mode 100644
index 0cb4340b..00000000
--- a/api/logic/minecraft/onesix/OneSixInstance.h
+++ /dev/null
@@ -1,128 +0,0 @@
-/* Copyright 2013-2017 MultiMC Contributors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include "minecraft/MinecraftInstance.h"
-
-#include "minecraft/MinecraftProfile.h"
-#include "minecraft/ModList.h"
-
-#include "multimc_logic_export.h"
-
-class MULTIMC_LOGIC_EXPORT OneSixInstance : public MinecraftInstance
-{
-	Q_OBJECT
-public:
-	explicit OneSixInstance(SettingsObjectPtr globalSettings, SettingsObjectPtr settings, const QString &rootDir);
-	virtual ~OneSixInstance(){};
-
-	virtual void init() override;
-
-	//////  Mod Lists  //////
-	std::shared_ptr<ModList> loaderModList() const;
-	std::shared_ptr<ModList> coreModList() const;
-	std::shared_ptr<ModList> resourcePackList() const override;
-	std::shared_ptr<ModList> texturePackList() const override;
-	std::shared_ptr<WorldList> worldList() const override;
-	virtual QList<Mod> getJarMods() const override;
-	virtual void createProfile();
-
-	virtual QSet<QString> traits() override;
-
-	////// Directories and files //////
-	QString jarModsDir() const;
-	QString resourcePacksDir() const;
-	QString texturePacksDir() const;
-	QString loaderModsDir() const;
-	QString coreModsDir() const;
-	QString FMLlibDir() const;
-	QString customLibrariesDir() const;
-	QString worldDir() const;
-	virtual QString instanceConfigFolder() const override;
-
-	virtual shared_qobject_ptr<Task> createUpdateTask() override;
-	virtual std::shared_ptr<Task> createJarModdingTask() override;
-	virtual QString createLaunchScript(AuthSessionPtr session) override;
-	QStringList verboseDescription(AuthSessionPtr session) override;
-
-	virtual QString intendedVersionId() const override;
-	virtual bool setIntendedVersionId(QString version) override;
-	virtual QString currentVersionId() const override;
-
-	QString getComponentVersion(const QString &uid) const;
-	bool setComponentVersion(const QString &uid, const QString &version);
-
-	virtual bool shouldUpdate() const override;
-	virtual void setShouldUpdate(bool val) override;
-
-	/**
-	 * reload the profile, including version json files.
-	 *
-	 * throws various exceptions :3
-	 */
-	void reloadProfile();
-
-	/// clears all version information in preparation for an update
-	void clearProfile();
-
-	/// get the current full version info
-	std::shared_ptr<MinecraftProfile> getMinecraftProfile() const;
-
-	virtual QDir jarmodsPath() const;
-	virtual QDir librariesPath() const;
-	virtual QDir versionsPath() const;
-	virtual bool providesVersionFile() const;
-
-	bool reload() override;
-
-	virtual QStringList extraArguments() const override;
-
-	std::shared_ptr<OneSixInstance> getSharedPtr();
-
-	virtual QString typeName() const override;
-
-	bool canExport() const override
-	{
-		return true;
-	}
-
-	QStringList getClassPath() const override;
-	QString getMainClass() const override;
-
-	QStringList getNativeJars() const override;
-	QString getNativePath() const override;
-
-	QString getLocalLibraryPath() const override;
-
-	QStringList processMinecraftArgs(AuthSessionPtr account) const override;
-
-protected:
-	std::shared_ptr<LaunchStep> createMainLaunchStep(LaunchTask *parent, AuthSessionPtr session) override;
-	QStringList validLaunchMethods() override;
-
-signals:
-	void versionReloaded();
-
-protected:
-	std::shared_ptr<MinecraftProfile> m_profile;
-	mutable std::shared_ptr<ModList> m_loader_mod_list;
-	mutable std::shared_ptr<ModList> m_core_mod_list;
-	mutable std::shared_ptr<ModList> m_resource_pack_list;
-	mutable std::shared_ptr<ModList> m_texture_pack_list;
-	mutable std::shared_ptr<WorldList> m_world_list;
-};
-
-Q_DECLARE_METATYPE(std::shared_ptr<OneSixInstance>)
diff --git a/api/logic/minecraft/onesix/OneSixProfileStrategy.cpp b/api/logic/minecraft/onesix/OneSixProfileStrategy.cpp
deleted file mode 100644
index 39dd8343..00000000
--- a/api/logic/minecraft/onesix/OneSixProfileStrategy.cpp
+++ /dev/null
@@ -1,471 +0,0 @@
-#include "OneSixProfileStrategy.h"
-#include "OneSixInstance.h"
-#include "OneSixVersionFormat.h"
-
-#include "Env.h"
-#include <FileSystem.h>
-
-#include <QDir>
-#include <QUuid>
-#include <QJsonDocument>
-#include <QJsonArray>
-#include <QSaveFile>
-#include <QResource>
-#include <meta/Index.h>
-#include <meta/Version.h>
-
-#include <tuple>
-
-OneSixProfileStrategy::OneSixProfileStrategy(OneSixInstance* instance)
-{
-	m_instance = instance;
-}
-
-void OneSixProfileStrategy::upgradeDeprecatedFiles()
-{
-	auto versionJsonPath = FS::PathCombine(m_instance->instanceRoot(), "version.json");
-	auto customJsonPath = FS::PathCombine(m_instance->instanceRoot(), "custom.json");
-	auto mcJson = FS::PathCombine(m_instance->instanceRoot(), "patches" , "net.minecraft.json");
-
-	QString sourceFile;
-	QString renameFile;
-
-	// convert old crap.
-	if(QFile::exists(customJsonPath))
-	{
-		sourceFile = customJsonPath;
-		renameFile = versionJsonPath;
-	}
-	else if(QFile::exists(versionJsonPath))
-	{
-		sourceFile = versionJsonPath;
-	}
-	if(!sourceFile.isEmpty() && !QFile::exists(mcJson))
-	{
-		if(!FS::ensureFilePathExists(mcJson))
-		{
-			qWarning() << "Couldn't create patches folder for" << m_instance->name();
-			return;
-		}
-		if(!renameFile.isEmpty() && QFile::exists(renameFile))
-		{
-			if(!QFile::rename(renameFile, renameFile + ".old"))
-			{
-				qWarning() << "Couldn't rename" << renameFile << "to" << renameFile + ".old" << "in" << m_instance->name();
-				return;
-			}
-		}
-		auto file = ProfileUtils::parseJsonFile(QFileInfo(sourceFile), false);
-		ProfileUtils::removeLwjglFromPatch(file);
-		file->uid = "net.minecraft";
-		file->version = file->minecraftVersion;
-		file->name = "Minecraft";
-		auto data = OneSixVersionFormat::versionFileToJson(file, false).toJson();
-		QSaveFile newPatchFile(mcJson);
-		if(!newPatchFile.open(QIODevice::WriteOnly))
-		{
-			newPatchFile.cancelWriting();
-			qWarning() << "Couldn't open main patch for writing in" << m_instance->name();
-			return;
-		}
-		newPatchFile.write(data);
-		if(!newPatchFile.commit())
-		{
-			qWarning() << "Couldn't save main patch in" << m_instance->name();
-			return;
-		}
-		if(!QFile::rename(sourceFile, sourceFile + ".old"))
-		{
-			qWarning() << "Couldn't rename" << sourceFile << "to" << sourceFile + ".old" << "in" << m_instance->name();
-			return;
-		}
-	}
-}
-
-void OneSixProfileStrategy::loadDefaultBuiltinPatches()
-{
-	auto addBuiltinPatch = [&](const QString &uid, const QString intendedVersion, int order)
-	{
-		auto jsonFilePath = FS::PathCombine(m_instance->instanceRoot(), "patches" , uid + ".json");
-		// load up the base minecraft patch
-		ProfilePatchPtr profilePatch;
-		if(QFile::exists(jsonFilePath))
-		{
-			auto file = ProfileUtils::parseJsonFile(QFileInfo(jsonFilePath), false);
-			if(file->version.isEmpty())
-			{
-				file->version = intendedVersion;
-			}
-			profilePatch = std::make_shared<ProfilePatch>(file, jsonFilePath);
-			profilePatch->setVanilla(false);
-			profilePatch->setRevertible(true);
-		}
-		else
-		{
-			auto metaVersion = ENV.metadataIndex()->get(uid, intendedVersion);
-			profilePatch = std::make_shared<ProfilePatch>(metaVersion);
-			profilePatch->setVanilla(true);
-		}
-		profilePatch->setOrder(order);
-		profile->appendPatch(profilePatch);
-	};
-	addBuiltinPatch("net.minecraft", m_instance->getComponentVersion("net.minecraft"), -2);
-	addBuiltinPatch("org.lwjgl", m_instance->getComponentVersion("org.lwjgl"), -1);
-}
-
-void OneSixProfileStrategy::loadUserPatches()
-{
-	// first, collect all patches (that are not builtins of OneSix) and load them
-	QMap<QString, ProfilePatchPtr> loadedPatches;
-	QDir patchesDir(FS::PathCombine(m_instance->instanceRoot(),"patches"));
-	for (auto info : patchesDir.entryInfoList(QStringList() << "*.json", QDir::Files))
-	{
-		// parse the file
-		qDebug() << "Reading" << info.fileName();
-		auto file = ProfileUtils::parseJsonFile(info, true);
-		// ignore builtins
-		if (file->uid == "net.minecraft")
-			continue;
-		if (file->uid == "org.lwjgl")
-			continue;
-		auto patch = std::make_shared<ProfilePatch>(file, info.filePath());
-		patch->setRemovable(true);
-		patch->setMovable(true);
-		if(ENV.metadataIndex()->hasUid(file->uid))
-		{
-			// FIXME: requesting a uid/list creates it in the index... this allows reverting to possibly invalid versions...
-			patch->setRevertible(true);
-		}
-		loadedPatches[file->uid] = patch;
-	}
-	// these are 'special'... if not already loaded from instance files, grab them from the metadata repo.
-	auto loadSpecial = [&](const QString & uid, int order)
-	{
-		auto patchVersion = m_instance->getComponentVersion(uid);
-		if(!patchVersion.isEmpty() && !loadedPatches.contains(uid))
-		{
-			auto patch = std::make_shared<ProfilePatch>(ENV.metadataIndex()->get(uid, patchVersion));
-			patch->setOrder(order);
-			patch->setVanilla(true);
-			patch->setRemovable(true);
-			patch->setMovable(true);
-			loadedPatches[uid] = patch;
-		}
-	};
-	loadSpecial("net.minecraftforge", 5);
-	loadSpecial("com.mumfrey.liteloader", 10);
-
-	// now add all the patches by user sort order
-	ProfileUtils::PatchOrder userOrder;
-	ProfileUtils::readOverrideOrders(FS::PathCombine(m_instance->instanceRoot(), "order.json"), userOrder);
-	for (auto uid : userOrder)
-	{
-		// ignore builtins
-		if (uid == "net.minecraft")
-			continue;
-		if (uid == "org.lwjgl")
-			continue;
-		// ordering has a patch that is gone?
-		if(!loadedPatches.contains(uid))
-		{
-			continue;
-		}
-		profile->appendPatch(loadedPatches.take(uid));
-	}
-
-	// is there anything left to sort?
-	if(loadedPatches.isEmpty())
-	{
-		// TODO: save the order here?
-		return;
-	}
-
-	// inserting into multimap by order number as key sorts the patches and detects duplicates
-	QMultiMap<int, ProfilePatchPtr> files;
-	auto iter = loadedPatches.begin();
-	while(iter != loadedPatches.end())
-	{
-		files.insert((*iter)->getOrder(), *iter);
-		iter++;
-	}
-
-	// then just extract the patches and put them in the list
-	for (auto order : files.keys())
-	{
-		const auto &values = files.values(order);
-		for(auto &value: values)
-		{
-			// TODO: put back the insertion of problem messages here, so the user knows about the id duplication
-			profile->appendPatch(value);
-		}
-	}
-	// TODO: save the order here?
-}
-
-
-void OneSixProfileStrategy::load()
-{
-	profile->clearPatches();
-
-	upgradeDeprecatedFiles();
-	loadDefaultBuiltinPatches();
-	loadUserPatches();
-}
-
-bool OneSixProfileStrategy::saveOrder(ProfileUtils::PatchOrder order)
-{
-	return ProfileUtils::writeOverrideOrders(FS::PathCombine(m_instance->instanceRoot(), "order.json"), order);
-}
-
-bool OneSixProfileStrategy::resetOrder()
-{
-	return QDir(m_instance->instanceRoot()).remove("order.json");
-}
-
-bool OneSixProfileStrategy::removePatch(ProfilePatchPtr patch)
-{
-	bool ok = true;
-	// first, remove the patch file. this ensures it's not used anymore
-	auto fileName = patch->getFilename();
-	if(fileName.size())
-	{
-		QFile patchFile(fileName);
-		if(patchFile.exists() && !patchFile.remove())
-		{
-			qCritical() << "File" << fileName << "could not be removed because:" << patchFile.errorString();
-			return false;
-		}
-	}
-	if(!m_instance->getComponentVersion(patch->getID()).isEmpty())
-	{
-		m_instance->setComponentVersion(patch->getID(), QString());
-	}
-
-	// FIXME: we need a generic way of removing local resources, not just jar mods...
-	auto preRemoveJarMod = [&](LibraryPtr jarMod) -> bool
-	{
-		if (!jarMod->isLocal())
-		{
-			return true;
-		}
-		QStringList jar, temp1, temp2, temp3;
-		jarMod->getApplicableFiles(currentSystem, jar, temp1, temp2, temp3, m_instance->jarmodsPath().absolutePath());
-		QFileInfo finfo (jar[0]);
-		if(finfo.exists())
-		{
-			QFile jarModFile(jar[0]);
-			if(!jarModFile.remove())
-			{
-				qCritical() << "File" << jar[0] << "could not be removed because:" << jarModFile.errorString();
-				return false;
-			}
-			return true;
-		}
-		return true;
-	};
-
-	auto &jarMods = patch->getVersionFile()->jarMods;
-	for(auto &jarmod: jarMods)
-	{
-		ok &= preRemoveJarMod(jarmod);
-	}
-	return ok;
-}
-
-bool OneSixProfileStrategy::customizePatch(ProfilePatchPtr patch)
-{
-	if(patch->isCustom())
-	{
-		return false;
-	}
-
-	auto filename = FS::PathCombine(m_instance->instanceRoot(), "patches" , patch->getID() + ".json");
-	if(!FS::ensureFilePathExists(filename))
-	{
-		return false;
-	}
-	// FIXME: get rid of this try-catch.
-	try
-	{
-		QSaveFile jsonFile(filename);
-		if(!jsonFile.open(QIODevice::WriteOnly))
-		{
-			return false;
-		}
-		auto vfile = patch->getVersionFile();
-		if(!vfile)
-		{
-			return false;
-		}
-		auto document = OneSixVersionFormat::versionFileToJson(vfile, true);
-		jsonFile.write(document.toJson());
-		if(!jsonFile.commit())
-		{
-			return false;
-		}
-		load();
-	}
-	catch (Exception &error)
-	{
-		qWarning() << "Version could not be loaded:" << error.cause();
-	}
-	return true;
-}
-
-bool OneSixProfileStrategy::revertPatch(ProfilePatchPtr patch)
-{
-	if(!patch->isCustom())
-	{
-		// already not custom
-		return true;
-	}
-	auto filename = patch->getFilename();
-	if(!QFile::exists(filename))
-	{
-		// already gone / not custom
-		return true;
-	}
-	// just kill the file and reload
-	bool result = QFile::remove(filename);
-	// FIXME: get rid of this try-catch.
-	try
-	{
-		load();
-	}
-	catch (Exception &error)
-	{
-		qWarning() << "Version could not be loaded:" << error.cause();
-	}
-	return result;
-}
-
-bool OneSixProfileStrategy::installJarMods(QStringList filepaths)
-{
-	QString patchDir = FS::PathCombine(m_instance->instanceRoot(), "patches");
-	if(!FS::ensureFolderPathExists(patchDir))
-	{
-		return false;
-	}
-
-	if (!FS::ensureFolderPathExists(m_instance->jarModsDir()))
-	{
-		return false;
-	}
-
-	for(auto filepath:filepaths)
-	{
-		QFileInfo sourceInfo(filepath);
-		auto uuid = QUuid::createUuid();
-		QString id = uuid.toString().remove('{').remove('}');
-		QString target_filename = id + ".jar";
-		QString target_id = "org.multimc.jarmod." + id;
-		QString target_name = sourceInfo.completeBaseName() + " (jar mod)";
-		QString finalPath = FS::PathCombine(m_instance->jarModsDir(), target_filename);
-
-		QFileInfo targetInfo(finalPath);
-		if(targetInfo.exists())
-		{
-			return false;
-		}
-
-		if (!QFile::copy(sourceInfo.absoluteFilePath(),QFileInfo(finalPath).absoluteFilePath()))
-		{
-			return false;
-		}
-
-		auto f = std::make_shared<VersionFile>();
-		auto jarMod = std::make_shared<Library>();
-		jarMod->setRawName(GradleSpecifier("org.multimc.jarmods:" + id + ":1"));
-		jarMod->setFilename(target_filename);
-		jarMod->setDisplayName(sourceInfo.completeBaseName());
-		jarMod->setHint("local");
-		f->jarMods.append(jarMod);
-		f->name = target_name;
-		f->uid = target_id;
-		f->order = profile->getFreeOrderNumber();
-		QString patchFileName = FS::PathCombine(patchDir, target_id + ".json");
-
-		QFile file(patchFileName);
-		if (!file.open(QFile::WriteOnly))
-		{
-			qCritical() << "Error opening" << file.fileName()
-						<< "for reading:" << file.errorString();
-			return false;
-		}
-		file.write(OneSixVersionFormat::versionFileToJson(f, true).toJson());
-		file.close();
-
-		auto patch = std::make_shared<ProfilePatch>(f, patchFileName);
-		patch->setMovable(true);
-		patch->setRemovable(true);
-		profile->appendPatch(patch);
-	}
-	profile->saveCurrentOrder();
-	profile->reapplyPatches();
-	return true;
-}
-
-bool OneSixProfileStrategy::installCustomJar(QString filepath)
-{
-	QString patchDir = FS::PathCombine(m_instance->instanceRoot(), "patches");
-	if(!FS::ensureFolderPathExists(patchDir))
-	{
-		return false;
-	}
-
-	QString libDir = m_instance->customLibrariesDir();
-	if (!FS::ensureFolderPathExists(libDir))
-	{
-		return false;
-	}
-
-	auto specifier = GradleSpecifier("org.multimc:customjar:1");
-	QFileInfo sourceInfo(filepath);
-	QString target_filename = specifier.getFileName();
-	QString target_id = specifier.artifactId();
-	QString target_name = sourceInfo.completeBaseName() + " (custom jar)";
-	QString finalPath = FS::PathCombine(libDir, target_filename);
-
-	QFileInfo jarInfo(finalPath);
-	if (jarInfo.exists())
-	{
-		if(!QFile::remove(finalPath))
-		{
-			return false;
-		}
-	}
-	if (!QFile::copy(filepath, finalPath))
-	{
-		return false;
-	}
-
-	auto f = std::make_shared<VersionFile>();
-	auto jarMod = std::make_shared<Library>();
-	jarMod->setRawName(specifier);
-	jarMod->setDisplayName(sourceInfo.completeBaseName());
-	jarMod->setHint("local");
-	f->mainJar = jarMod;
-	f->name = target_name;
-	f->uid = target_id;
-	f->order = profile->getFreeOrderNumber();
-	QString patchFileName = FS::PathCombine(patchDir, target_id + ".json");
-
-	QFile file(patchFileName);
-	if (!file.open(QFile::WriteOnly))
-	{
-		qCritical() << "Error opening" << file.fileName()
-					<< "for reading:" << file.errorString();
-		return false;
-	}
-	file.write(OneSixVersionFormat::versionFileToJson(f, true).toJson());
-	file.close();
-
-	auto patch = std::make_shared<ProfilePatch>(f, patchFileName);
-	patch->setMovable(true);
-	patch->setRemovable(true);
-	profile->appendPatch(patch);
-
-	profile->saveCurrentOrder();
-	profile->reapplyPatches();
-	return true;
-}
diff --git a/api/logic/minecraft/onesix/OneSixProfileStrategy.h b/api/logic/minecraft/onesix/OneSixProfileStrategy.h
deleted file mode 100644
index e4eee4b2..00000000
--- a/api/logic/minecraft/onesix/OneSixProfileStrategy.h
+++ /dev/null
@@ -1,27 +0,0 @@
-#pragma once
-#include "minecraft/ProfileStrategy.h"
-
-class OneSixInstance;
-
-class OneSixProfileStrategy : public ProfileStrategy
-{
-public:
-	OneSixProfileStrategy(OneSixInstance * instance);
-	virtual ~OneSixProfileStrategy() {};
-	void load() override;
-	bool resetOrder() override;
-	bool saveOrder(ProfileUtils::PatchOrder order) override;
-	bool installJarMods(QStringList filepaths) override;
-	bool installCustomJar(QString filepath) override;
-	bool removePatch(ProfilePatchPtr patch) override;
-	bool customizePatch(ProfilePatchPtr patch) override;
-	bool revertPatch(ProfilePatchPtr patch) override;
-
-protected:
-	virtual void loadDefaultBuiltinPatches();
-	virtual void loadUserPatches();
-	void upgradeDeprecatedFiles();
-
-protected:
-	OneSixInstance *m_instance;
-};
diff --git a/api/logic/minecraft/onesix/update/AssetUpdateTask.cpp b/api/logic/minecraft/update/AssetUpdateTask.cpp
index 21600ff0..b67e630e 100644
--- a/api/logic/minecraft/onesix/update/AssetUpdateTask.cpp
+++ b/api/logic/minecraft/update/AssetUpdateTask.cpp
@@ -1,10 +1,11 @@
 #include "Env.h"
 #include "AssetUpdateTask.h"
-#include "minecraft/onesix/OneSixInstance.h"
+#include "minecraft/MinecraftInstance.h"
+#include "minecraft/MinecraftProfile.h"
 #include "net/ChecksumValidator.h"
 #include "minecraft/AssetsUtils.h"
 
-AssetUpdateTask::AssetUpdateTask(OneSixInstance * inst)
+AssetUpdateTask::AssetUpdateTask(MinecraftInstance * inst)
 {
 	m_inst = inst;
 }
diff --git a/api/logic/minecraft/onesix/update/AssetUpdateTask.h b/api/logic/minecraft/update/AssetUpdateTask.h
index 3b500189..c666faa6 100644
--- a/api/logic/minecraft/onesix/update/AssetUpdateTask.h
+++ b/api/logic/minecraft/update/AssetUpdateTask.h
@@ -1,13 +1,13 @@
 #pragma once
 #include "tasks/Task.h"
 #include "net/NetJob.h"
-class OneSixInstance;
+class MinecraftInstance;
 
 class AssetUpdateTask : public Task
 {
 	Q_OBJECT
 public:
-	AssetUpdateTask(OneSixInstance * inst);
+	AssetUpdateTask(MinecraftInstance * inst);
 	void executeTask() override;
 
 	bool canAbort() const override;
@@ -21,6 +21,6 @@ public slots:
 	bool abort() override;
 
 private:
-	OneSixInstance *m_inst;
+	MinecraftInstance *m_inst;
 	NetJobPtr downloadJob;
 };
diff --git a/api/logic/minecraft/onesix/update/FMLLibrariesTask.cpp b/api/logic/minecraft/update/FMLLibrariesTask.cpp
index 13310e92..63428a48 100644
--- a/api/logic/minecraft/onesix/update/FMLLibrariesTask.cpp
+++ b/api/logic/minecraft/update/FMLLibrariesTask.cpp
@@ -2,17 +2,17 @@
 #include <FileSystem.h>
 #include <minecraft/VersionFilterData.h>
 #include "FMLLibrariesTask.h"
-#include "minecraft/onesix/OneSixInstance.h"
+#include "minecraft/MinecraftInstance.h"
+#include "minecraft/MinecraftProfile.h"
 
-
-FMLLibrariesTask::FMLLibrariesTask(OneSixInstance * inst)
+FMLLibrariesTask::FMLLibrariesTask(MinecraftInstance * inst)
 {
 	m_inst = inst;
 }
 void FMLLibrariesTask::executeTask()
 {
 	// Get the mod list
-	OneSixInstance *inst = (OneSixInstance *)m_inst;
+	MinecraftInstance *inst = (MinecraftInstance *)m_inst;
 	std::shared_ptr<MinecraftProfile> profile = inst->getMinecraftProfile();
 	bool forge_present = false;
 
@@ -22,7 +22,7 @@ void FMLLibrariesTask::executeTask()
 		return;
 	}
 
-	QString version = inst->intendedVersionId();
+	QString version = inst->getComponentVersion("net.minecraft");
 	auto &fmlLibsMapping = g_VersionFilterData.fmlLibsMapping;
 	if (!fmlLibsMapping.contains(version))
 	{
@@ -45,7 +45,7 @@ void FMLLibrariesTask::executeTask()
 	// now check the lib folder inside the instance for files.
 	for (auto &lib : libList)
 	{
-		QFileInfo libInfo(FS::PathCombine(inst->FMLlibDir(), lib.filename));
+		QFileInfo libInfo(FS::PathCombine(inst->libDir(), lib.filename));
 		if (libInfo.exists())
 			continue;
 		fmlLibsToProcess.append(lib);
@@ -88,20 +88,20 @@ void FMLLibrariesTask::fmllibsFinished()
 	if (!fmlLibsToProcess.isEmpty())
 	{
 		setStatus(tr("Copying FML libraries into the instance..."));
-		OneSixInstance *inst = (OneSixInstance *)m_inst;
+		MinecraftInstance *inst = (MinecraftInstance *)m_inst;
 		auto metacache = ENV.metacache();
 		int index = 0;
 		for (auto &lib : fmlLibsToProcess)
 		{
 			progress(index, fmlLibsToProcess.size());
 			auto entry = metacache->resolveEntry("fmllibs", lib.filename);
-			auto path = FS::PathCombine(inst->FMLlibDir(), lib.filename);
+			auto path = FS::PathCombine(inst->libDir(), lib.filename);
 			if (!FS::ensureFilePathExists(path))
 			{
 				emitFailed(tr("Failed creating FML library folder inside the instance."));
 				return;
 			}
-			if (!QFile::copy(entry->getFullPath(), FS::PathCombine(inst->FMLlibDir(), lib.filename)))
+			if (!QFile::copy(entry->getFullPath(), FS::PathCombine(inst->libDir(), lib.filename)))
 			{
 				emitFailed(tr("Failed copying Forge/FML library: %1.").arg(lib.filename));
 				return;
diff --git a/api/logic/minecraft/onesix/update/FMLLibrariesTask.h b/api/logic/minecraft/update/FMLLibrariesTask.h
index 616053d7..10f48f5b 100644
--- a/api/logic/minecraft/onesix/update/FMLLibrariesTask.h
+++ b/api/logic/minecraft/update/FMLLibrariesTask.h
@@ -1,13 +1,13 @@
 #pragma once
 #include "tasks/Task.h"
 #include "net/NetJob.h"
-class OneSixInstance;
+class MinecraftInstance;
 
 class FMLLibrariesTask : public Task
 {
 	Q_OBJECT
 public:
-	FMLLibrariesTask(OneSixInstance * inst);
+	FMLLibrariesTask(MinecraftInstance * inst);
 
 	void executeTask() override;
 
@@ -21,7 +21,7 @@ public slots:
 	bool abort() override;
 
 private:
-	OneSixInstance *m_inst;
+	MinecraftInstance *m_inst;
 	NetJobPtr downloadJob;
 	QList<FMLlib> fmlLibsToProcess;
 };
diff --git a/api/logic/minecraft/onesix/update/FoldersTask.cpp b/api/logic/minecraft/update/FoldersTask.cpp
index d478560c..34e2292a 100644
--- a/api/logic/minecraft/onesix/update/FoldersTask.cpp
+++ b/api/logic/minecraft/update/FoldersTask.cpp
@@ -1,8 +1,8 @@
 #include "FoldersTask.h"
-#include "minecraft/onesix/OneSixInstance.h"
+#include "minecraft/MinecraftInstance.h"
 #include <QDir>
 
-FoldersTask::FoldersTask(OneSixInstance * inst)
+FoldersTask::FoldersTask(MinecraftInstance * inst)
 	:Task()
 {
 	m_inst = inst;
diff --git a/api/logic/minecraft/onesix/update/FoldersTask.h b/api/logic/minecraft/update/FoldersTask.h
index 7cdc5a93..6e669b1e 100644
--- a/api/logic/minecraft/onesix/update/FoldersTask.h
+++ b/api/logic/minecraft/update/FoldersTask.h
@@ -2,14 +2,14 @@
 
 #include "tasks/Task.h"
 
-class OneSixInstance;
+class MinecraftInstance;
 class FoldersTask : public Task
 {
 	Q_OBJECT
 public:
-	FoldersTask(OneSixInstance * inst);
+	FoldersTask(MinecraftInstance * inst);
 	void executeTask() override;
 private:
-	OneSixInstance *m_inst;
+	MinecraftInstance *m_inst;
 };
 
diff --git a/api/logic/minecraft/onesix/update/LibrariesTask.cpp b/api/logic/minecraft/update/LibrariesTask.cpp
index 2cd41ded..c408f432 100644
--- a/api/logic/minecraft/onesix/update/LibrariesTask.cpp
+++ b/api/logic/minecraft/update/LibrariesTask.cpp
@@ -1,8 +1,9 @@
 #include "Env.h"
 #include "LibrariesTask.h"
-#include "minecraft/onesix/OneSixInstance.h"
+#include "minecraft/MinecraftInstance.h"
+#include "minecraft/MinecraftProfile.h"
 
-LibrariesTask::LibrariesTask(OneSixInstance * inst)
+LibrariesTask::LibrariesTask(MinecraftInstance * inst)
 {
 	m_inst = inst;
 }
@@ -11,7 +12,7 @@ void LibrariesTask::executeTask()
 {
 	setStatus(tr("Getting the library files from Mojang..."));
 	qDebug() << m_inst->name() << ": downloading libraries";
-	OneSixInstance *inst = (OneSixInstance *)m_inst;
+	MinecraftInstance *inst = (MinecraftInstance *)m_inst;
 	inst->reloadProfile();
 	if(inst->hasVersionBroken())
 	{
diff --git a/api/logic/minecraft/onesix/update/LibrariesTask.h b/api/logic/minecraft/update/LibrariesTask.h
index a84975e5..d06a5037 100644
--- a/api/logic/minecraft/onesix/update/LibrariesTask.h
+++ b/api/logic/minecraft/update/LibrariesTask.h
@@ -1,13 +1,13 @@
 #pragma once
 #include "tasks/Task.h"
 #include "net/NetJob.h"
-class OneSixInstance;
+class MinecraftInstance;
 
 class LibrariesTask : public Task
 {
 	Q_OBJECT
 public:
-	LibrariesTask(OneSixInstance * inst);
+	LibrariesTask(MinecraftInstance * inst);
 
 	void executeTask() override;
 
@@ -20,6 +20,6 @@ public slots:
 	bool abort() override;
 
 private:
-	OneSixInstance *m_inst;
+	MinecraftInstance *m_inst;
 	NetJobPtr downloadJob;
 };