python/virtualenv/PKG-INFO
author Jim Mathies <jmathies@mozilla.com>
Wed, 05 Feb 2014 06:18:19 -0600
changeset 166838 25572e0fbf0b28108833ba755d705a26ad7f7730
parent 146505 3f2c2521a7ae4c9a46bf1ef783027a7b0d4aeb0a
child 178242 a3fa93d4db23778016cad4032052fe22dce9d0e4
permissions -rw-r--r--
backout dde12ccefb19 due to bustage.

Metadata-Version: 1.1
Name: virtualenv
Version: 1.10.1
Summary: Virtual Python Environment builder
Home-page: http://www.virtualenv.org
Author: Jannis Leidel, Carl Meyer and Brian Rosner
Author-email: python-virtualenv@groups.google.com
License: MIT
Description: 
        
        What It Does
        ------------
        
        ``virtualenv`` is a tool to create isolated Python environments.
        
        The basic problem being addressed is one of dependencies and versions,
        and indirectly permissions. Imagine you have an application that
        needs version 1 of LibFoo, but another application requires version
        2. How can you use both these applications?  If you install
        everything into ``/usr/lib/python2.7/site-packages`` (or whatever your
        platform's standard location is), it's easy to end up in a situation
        where you unintentionally upgrade an application that shouldn't be
        upgraded.
        
        Or more generally, what if you want to install an application *and
        leave it be*?  If an application works, any change in its libraries or
        the versions of those libraries can break the application.
        
        Also, what if you can't install packages into the global
        ``site-packages`` directory?  For instance, on a shared host.
        
        In all these cases, ``virtualenv`` can help you. It creates an
        environment that has its own installation directories, that doesn't
        share libraries with other virtualenv environments (and optionally
        doesn't access the globally installed libraries either).
        
        
        Installation
        ------------
        
        .. warning::
        
            We advise installing virtualenv-1.9 or greater. Prior to version 1.9, the
            pip included in virtualenv did not 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 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 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.
        
        Usage
        -----
        
        The basic usage is::
        
            $ virtualenv ENV
        
        This creates ``ENV/lib/pythonX.X/site-packages``, where any libraries you
        install will go. It also creates ``ENV/bin/python``, which is a Python
        interpreter that uses this environment. Anytime you use that interpreter
        (including when a script has ``#!/path/to/ENV/bin/python`` in it) the libraries
        in that environment will be used.
        
        It also installs either `Setuptools
        <http://peak.telecommunity.com/DevCenter/setuptools>`_ into the environment.
        
        .. note::
        
          Virtualenv (<1.10) used to provide a ``--distribute`` option to use the
          setuptools fork Distribute_. Since Distribute has been merged back into
          setuptools this option is now no-op, it will always use the improved
          setuptools releases.
        
        A new virtualenv also includes the `pip <http://pypi.python.org/pypi/pip>`_
        installer, so you can use ``ENV/bin/pip`` to install additional packages into
        the environment.
        
        .. _Distribute: https://pypi.python.org/pypi/distribute
        
        activate script
        ~~~~~~~~~~~~~~~
        
        In a newly created virtualenv there will be a ``bin/activate`` shell
        script. For Windows systems, activation scripts are provided for CMD.exe
        and Powershell.
        
        On Posix systems you can do::
        
            $ source bin/activate
        
        This will change your ``$PATH`` so its first entry is the virtualenv's
        ``bin/`` directory. (You have to use ``source`` because it changes your
        shell environment in-place.) This is all it does; it's purely a
        convenience. If you directly run a script or the python interpreter
        from the virtualenv's ``bin/`` directory (e.g. ``path/to/env/bin/pip``
        or ``/path/to/env/bin/python script.py``) there's no need for
        activation.
        
        After activating an environment you can use the function ``deactivate`` to
        undo the changes to your ``$PATH``.
        
        The ``activate`` script will also modify your shell prompt to indicate
        which environment is currently active. You can disable this behavior,
        which can be useful if you have your own custom prompt that already
        displays the active environment name. To do so, set the
        ``VIRTUAL_ENV_DISABLE_PROMPT`` environment variable to any non-empty
        value before running the ``activate`` script.
        
        On Windows you just do::
        
            > \path\to\env\Scripts\activate
        
        And type `deactivate` to undo the changes.
        
        Based on your active shell (CMD.exe or Powershell.exe), Windows will use
        either activate.bat or activate.ps1 (as appropriate) to activate the
        virtual environment. If using Powershell, see the notes about code signing
        below.
        
        .. note::
        
            If using Powershell, the ``activate`` script is subject to the
            `execution policies`_ on the system. By default on Windows 7, the system's
            excution policy is set to ``Restricted``, meaning no scripts like the
            ``activate`` script are allowed to be executed. But that can't stop us
            from changing that slightly to allow it to be executed.
        
            In order to use the script, you have to relax your system's execution
            policy to ``AllSigned``, meaning all scripts on the system must be
            digitally signed to be executed. Since the virtualenv activation
            script is signed by one of the authors (Jannis Leidel) this level of
            the execution policy suffices. As an administrator run::
        
                PS C:\> Set-ExecutionPolicy AllSigned
        
            Then you'll be asked to trust the signer, when executing the script.
            You will be prompted with the following::
        
                PS C:\> virtualenv .\foo
                New python executable in C:\foo\Scripts\python.exe
                Installing setuptools................done.
                Installing pip...................done.
                PS C:\> .\foo\scripts\activate
        
                Do you want to run software from this untrusted publisher?
                File C:\foo\scripts\activate.ps1 is published by E=jannis@leidel.info,
                CN=Jannis Leidel, L=Berlin, S=Berlin, C=DE, Description=581796-Gh7xfJxkxQSIO4E0
                and is not trusted on your system. Only run scripts from trusted publishers.
                [V] Never run  [D] Do not run  [R] Run once  [A] Always run  [?] Help
                (default is "D"):A
                (foo) PS C:\>
        
            If you select ``[A] Always Run``, the certificate will be added to the
            Trusted Publishers of your user account, and will be trusted in this
            user's context henceforth. If you select ``[R] Run Once``, the script will
            be run, but you will be prometed on a subsequent invocation. Advanced users
            can add the signer's certificate to the Trusted Publishers of the Computer
            account to apply to all users (though this technique is out of scope of this
            document).
        
            Alternatively, you may relax the system execution policy to allow running
            of local scripts without verifying the code signature using the following::
        
                PS C:\> Set-ExecutionPolicy RemoteSigned
        
            Since the ``activate.ps1`` script is generated locally for each virtualenv,
            it is not considered a remote script and can then be executed.
        
        .. _`execution policies`: http://technet.microsoft.com/en-us/library/dd347641.aspx
        
        The ``--system-site-packages`` Option
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        
        If you build with ``virtualenv --system-site-packages ENV``, your virtual
        environment will inherit packages from ``/usr/lib/python2.7/site-packages``
        (or wherever your global site-packages directory is).
        
        This can be used if you have control over the global site-packages directory,
        and you want to depend on the packages there. If you want isolation from the
        global system, do not use this flag.
        
        
        Environment variables and configuration files
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        
        virtualenv can not only be configured by passing command line options such as
        ``--python`` but also by two other means:
        
        - Environment variables
        
          Each command line option is automatically used to look for environment
          variables with the name format ``VIRTUALENV_<UPPER_NAME>``. That means
          the name of the command line options are capitalized and have dashes
          (``'-'``) replaced with underscores (``'_'``).
        
          For example, to automatically use a custom Python binary instead of the
          one virtualenv is run with you can also set an environment variable::
        
              $ export VIRTUALENV_PYTHON=/opt/python-3.3/bin/python
              $ virtualenv ENV
        
          It's the same as passing the option to virtualenv directly::
        
              $ virtualenv --python=/opt/python-3.3/bin/python ENV
        
          This also works for appending command line options, like ``--find-links``.
          Just leave an empty space between the passsed values, e.g.::
        
              $ export VIRTUALENV_EXTRA_SEARCH_DIR="/path/to/dists /path/to/other/dists"
              $ virtualenv ENV
        
          is the same as calling::
        
              $ virtualenv --extra-search-dir=/path/to/dists --extra-search-dir=/path/to/other/dists ENV
        
        - Config files
        
          virtualenv also looks for a standard ini config file. On Unix and Mac OS X
          that's ``$HOME/.virtualenv/virtualenv.ini`` and on Windows, it's
          ``%APPDATA%\virtualenv\virtualenv.ini``.
        
          The names of the settings are derived from the long command line option,
          e.g. the option ``--python`` would look like this::
        
              [virtualenv]
              python = /opt/python-3.3/bin/python
        
          Appending options like ``--extra-search-dir`` can be written on multiple
          lines::
        
              [virtualenv]
              extra-search-dir =
                  /path/to/dists
                  /path/to/other/dists
        
        Please have a look at the output of ``virtualenv --help`` for a full list
        of supported options.
        
        Windows Notes
        ~~~~~~~~~~~~~
        
        Some paths within the virtualenv are slightly different on Windows: scripts and
        executables on Windows go in ``ENV\Scripts\`` instead of ``ENV/bin/`` and
        libraries go in ``ENV\Lib\`` rather than ``ENV/lib/``.
        
        To create a virtualenv under a path with spaces in it on Windows, you'll need
        the `win32api <http://sourceforge.net/projects/pywin32/>`_ library installed.
        
        PyPy Support
        ~~~~~~~~~~~~
        
        Beginning with virtualenv version 1.5 `PyPy <http://pypy.org>`_ is
        supported. To use PyPy 1.4 or 1.4.1, you need a version of virtualenv >= 1.5.
        To use PyPy 1.5, you need a version of virtualenv >= 1.6.1.
        
        Creating Your Own Bootstrap Scripts
        -----------------------------------
        
        While this creates an environment, it doesn't put anything into the
        environment. Developers may find it useful to distribute a script
        that sets up a particular environment, for example a script that
        installs a particular web application.
        
        To create a script like this, call
        ``virtualenv.create_bootstrap_script(extra_text)``, and write the
        result to your new bootstrapping script. Here's the documentation
        from the docstring:
        
        Creates a bootstrap script, which is like this script but with
        extend_parser, adjust_options, and after_install hooks.
        
        This returns a string that (written to disk of course) can be used
        as a bootstrap script with your own customizations. The script
        will be the standard virtualenv.py script, with your extra text
        added (your extra text should be Python code).
        
        If you include these functions, they will be called:
        
        ``extend_parser(optparse_parser)``:
            You can add or remove options from the parser here.
        
        ``adjust_options(options, args)``:
            You can change options here, or change the args (if you accept
            different kinds of arguments, be sure you modify ``args`` so it is
            only ``[DEST_DIR]``).
        
        ``after_install(options, home_dir)``:
        
            After everything is installed, this function is called. This
            is probably the function you are most likely to use. An
            example would be::
        
                def after_install(options, home_dir):
                    if sys.platform == 'win32':
                        bin = 'Scripts'
                    else:
                        bin = 'bin'
                    subprocess.call([join(home_dir, bin, 'easy_install'),
                                     'MyPackage'])
                    subprocess.call([join(home_dir, bin, 'my-package-script'),
                                     'setup', home_dir])
        
            This example immediately installs a package, and runs a setup
            script from that package.
        
        Bootstrap Example
        ~~~~~~~~~~~~~~~~~
        
        Here's a more concrete example of how you could use this::
        
            import virtualenv, textwrap
            output = virtualenv.create_bootstrap_script(textwrap.dedent("""
            import os, subprocess
            def after_install(options, home_dir):
                etc = join(home_dir, 'etc')
                if not os.path.exists(etc):
                    os.makedirs(etc)
                subprocess.call([join(home_dir, 'bin', 'easy_install'),
                                 'BlogApplication'])
                subprocess.call([join(home_dir, 'bin', 'paster'),
                                 'make-config', 'BlogApplication',
                                 join(etc, 'blog.ini')])
                subprocess.call([join(home_dir, 'bin', 'paster'),
                                 'setup-app', join(etc, 'blog.ini')])
            """))
            f = open('blog-bootstrap.py', 'w').write(output)
        
        Another example is available `here
        <https://github.com/socialplanning/fassembler/blob/master/fassembler/create-venv-script.py>`_.
        
        
        Using Virtualenv without ``bin/python``
        ---------------------------------------
        
        Sometimes you can't or don't want to use the Python interpreter
        created by the virtualenv. For instance, in a `mod_python
        <http://www.modpython.org/>`_ or `mod_wsgi <http://www.modwsgi.org/>`_
        environment, there is only one interpreter.
        
        Luckily, it's easy. You must use the custom Python interpreter to
        *install* libraries. But to *use* libraries, you just have to be sure
        the path is correct. A script is available to correct the path. You
        can setup the environment like::
        
            activate_this = '/path/to/env/bin/activate_this.py'
            execfile(activate_this, dict(__file__=activate_this))
        
        This will change ``sys.path`` and even change ``sys.prefix``, but also allow
        you to use an existing interpreter. Items in your environment will show up
        first on ``sys.path``, before global items. However, global items will
        always be accessible (as if the ``--system-site-packages`` flag had been used
        in creating the environment, whether it was or not). Also, this cannot undo
        the activation of other environments, or modules that have been imported.
        You shouldn't try to, for instance, activate an environment before a web
        request; you should activate *one* environment as early as possible, and not
        do it again in that process.
        
        Making Environments Relocatable
        -------------------------------
        
        Note: this option is somewhat experimental, and there are probably
        caveats that have not yet been identified.
        
        .. warning::
        
            The ``--relocatable`` option currently has a number of issues,
            and is not guaranteed to work in all circumstances. It is possible
            that the option will be deprecated in a future version of ``virtualenv``.
        
        Normally environments are tied to a specific path. That means that
        you cannot move an environment around or copy it to another computer.
        You can fix up an environment to make it relocatable with the
        command::
        
            $ virtualenv --relocatable ENV
        
        This will make some of the files created by setuptools use relative paths,
        and will change all the scripts to use ``activate_this.py`` instead of using
        the location of the Python interpreter to select the environment.
        
        **Note:** scripts which have been made relocatable will only work if
        the virtualenv is activated, specifically the python executable from
        the virtualenv must be the first one on the system PATH. Also note that
        the activate scripts are not currently made relocatable by
        ``virtualenv --relocatable``.
        
        **Note:** you must run this after you've installed *any* packages into
        the environment. If you make an environment relocatable, then
        install a new package, you must run ``virtualenv --relocatable``
        again.
        
        Also, this **does not make your packages cross-platform**. You can
        move the directory around, but it can only be used on other similar
        computers. Some known environmental differences that can cause
        incompatibilities: a different version of Python, when one platform
        uses UCS2 for its internal unicode representation and another uses
        UCS4 (a compile-time option), obvious platform changes like Windows
        vs. Linux, or Intel vs. ARM, and if you have libraries that bind to C
        libraries on the system, if those C libraries are located somewhere
        different (either different versions, or a different filesystem
        layout).
        
        If you use this flag to create an environment, currently, the
        ``--system-site-packages`` option will be implied.
        
        The ``--extra-search-dir`` option
        ---------------------------------
        
        .. note::
        
            Currently, this feature only partially works for pip, and not at
            all for setuptools. For details,
            see `Issue #327 <https://github.com/pypa/virtualenv/issues/327>`_
        
        This option allows you to provide your own versions of setuptools
        and/or pip on the filesystem, and tell virtualenv to use those distributions
        instead of the ones in ``virtualenv_support``.
        
        To use this feature, pass one or more ``--extra-search-dir`` options to
        virtualenv like this::
        
            $ virtualenv --extra-search-dir=/path/to/distributions ENV
        
        The ``/path/to/distributions`` path should point to a directory that
        contains setuptools and/or pip distributions. Setuptools distributions
        must be ``.egg`` files; pip distributions should be `.tar.gz` source
        distributions.
        
        If no satisfactory local distributions are found, virtualenv will fail. Virtualenv will never download packages.
        
        The distribution lookup is done in the following locations, with the most
        recent version found used:
        
        #. The current directory.
        #. The directory where virtualenv.py is located.
        #. A ``virtualenv_support`` directory relative to the directory where
           virtualenv.py is located.
        #. If the file being executed is not named virtualenv.py (i.e. is a boot
           script), a ``virtualenv_support`` directory relative to wherever
           virtualenv.py is actually installed.
        
        
        Compare & Contrast with Alternatives
        ------------------------------------
        
        There are several alternatives that create isolated environments:
        
        * ``workingenv`` (which I do not suggest you use anymore) is the
          predecessor to this library. It used the main Python interpreter,
          but relied on setting ``$PYTHONPATH`` to activate the environment.
          This causes problems when running Python scripts that aren't part of
          the environment (e.g., a globally installed ``hg`` or ``bzr``). It
          also conflicted a lot with Setuptools.
        
        * `virtual-python
          <http://peak.telecommunity.com/DevCenter/EasyInstall#creating-a-virtual-python>`_
          is also a predecessor to this library. It uses only symlinks, so it
          couldn't work on Windows. It also symlinks over the *entire*
          standard library and global ``site-packages``. As a result, it
          won't see new additions to the global ``site-packages``.
        
          This script only symlinks a small portion of the standard library
          into the environment, and so on Windows it is feasible to simply
          copy these files over. Also, it creates a new/empty
          ``site-packages`` and also adds the global ``site-packages`` to the
          path, so updates are tracked separately. This script also installs
          Setuptools automatically, saving a step and avoiding the need for
          network access.
        
        * `zc.buildout <http://pypi.python.org/pypi/zc.buildout>`_ doesn't
          create an isolated Python environment in the same style, but
          achieves similar results through a declarative config file that sets
          up scripts with very particular packages. As a declarative system,
          it is somewhat easier to repeat and manage, but more difficult to
          experiment with. ``zc.buildout`` includes the ability to setup
          non-Python systems (e.g., a database server or an Apache instance).
        
        I *strongly* recommend anyone doing application development or
        deployment use one of these tools.
        
        Contributing
        ------------
        
        Refer to the `contributing to pip`_ documentation - it applies equally to
        virtualenv, except that virtualenv issues should filed on the `virtualenv
        repo`_ at GitHub.
        
        Virtualenv's release schedule is tied to pip's -- each time there's a new pip
        release, there will be a new virtualenv release that bundles the new version of
        pip.
        
        Files in the `virtualenv_embedded/` subdirectory are embedded into
        `virtualenv.py` itself as base64-encoded strings (in order to support
        single-file use of `virtualenv.py` without installing it). If your patch
        changes any file in `virtualenv_embedded/`, run `bin/rebuild-script.py` to
        update the embedded version of that file in `virtualenv.py`; commit that and
        submit it as part of your patch / pull request.
        
        .. _contributing to pip: http://www.pip-installer.org/en/latest/contributing.html
        .. _virtualenv repo: https://github.com/pypa/virtualenv/
        
        Running the tests
        ~~~~~~~~~~~~~~~~~
        
        Virtualenv's test suite is small and not yet at all comprehensive, but we aim
        to grow it.
        
        The easy way to run tests (handles test dependencies automatically)::
        
            $ python setup.py test
        
        If you want to run only a selection of the tests, you'll need to run them
        directly with nose instead. Create a virtualenv, and install required
        packages::
        
            $ pip install nose mock
        
        Run nosetests::
        
            $ nosetests
        
        Or select just a single test file to run::
        
            $ nosetests tests.test_virtualenv
        
        
        Other Documentation and Links
        -----------------------------
        
        * James Gardner has written a tutorial on using `virtualenv with
          Pylons
          <http://wiki.pylonshq.com/display/pylonscookbook/Using+a+Virtualenv+Sandbox>`_.
        
        * `Blog announcement
          <http://blog.ianbicking.org/2007/10/10/workingenv-is-dead-long-live-virtualenv/>`_.
        
        * Doug Hellmann wrote a description of his `command-line work flow
          using virtualenv (virtualenvwrapper)
          <http://www.doughellmann.com/articles/CompletelyDifferent-2008-05-virtualenvwrapper/index.html>`_
          including some handy scripts to make working with multiple
          environments easier. He also wrote `an example of using virtualenv
          to try IPython
          <http://www.doughellmann.com/articles/CompletelyDifferent-2008-02-ipython-and-virtualenv/index.html>`_.
        
        * Chris Perkins created a `showmedo video including virtualenv
          <http://showmedo.com/videos/video?name=2910000&fromSeriesID=291>`_.
        
        * `Using virtualenv with mod_wsgi
          <http://code.google.com/p/modwsgi/wiki/VirtualEnvironments>`_.
        
        * `virtualenv commands
          <https://github.com/thisismedium/virtualenv-commands>`_ for some more
          workflow-related tools around virtualenv.
        
        Status and License
        ------------------
        
        ``virtualenv`` is a successor to `workingenv
        <http://cheeseshop.python.org/pypi/workingenv.py>`_, and an extension
        of `virtual-python
        <http://peak.telecommunity.com/DevCenter/EasyInstall#creating-a-virtual-python>`_.
        
        It was written by Ian Bicking, sponsored by the `Open Planning
        Project <http://openplans.org>`_ and is now maintained by a
        `group of developers <https://github.com/pypa/virtualenv/raw/master/AUTHORS.txt>`_.
        It is licensed under an
        `MIT-style permissive license <https://github.com/pypa/virtualenv/raw/master/LICENSE.txt>`_.
        
        Changes & News
        --------------
        
        .. warning::
        
           Python bugfix releases 2.6.8, 2.7.3, 3.1.5 and 3.2.3 include a change that
           will cause "import random" to fail with "cannot import name urandom" on any
           virtualenv created on a Unix host with an earlier release of Python
           2.6/2.7/3.1/3.2, if the underlying system Python is upgraded. This is due to
           the fact that a virtualenv uses the system Python's standard library but
           contains its own copy of the Python interpreter, so an upgrade to the system
           Python results in a mismatch between the version of the Python interpreter
           and the version of the standard library. It can be fixed by removing
           ``$ENV/bin/python`` and re-running virtualenv on the same target directory
           with the upgraded Python.
        
        1.10.1 (2013-08-07)
        ~~~~~~~~~~~~~~~~~~~
        
        * **New Signing Key** Release 1.10.1 is using a different key than normal with
          fingerprint: 7C6B 7C5D 5E2B 6356 A926 F04F 6E3C BCE9 3372 DCFA
        * Upgraded pip to v1.4.1
        * Upgraded setuptools to v0.9.8
        
        
        1.10 (2013-07-23)
        ~~~~~~~~~~~~~~~~~
        
        * **BACKWARDS INCOMPATIBLE** Dropped support for Python 2.5. The minimum
          supported Python version is now Python 2.6.
        
        * **BACKWARDS INCOMPATIBLE** Using ``virtualenv.py`` as an isolated script
          (i.e. without an associated ``virtualenv_support`` directory) is no longer
          supported for security reasons and will fail with an error.
        
          Along with this, ``--never-download`` is now always pinned to ``True``, and
          is only being maintained in the short term for backward compatibility
          (Pull #412).
        
        * **IMPORTANT** Switched to the new setuptools (v0.9.7) which has been merged
          with Distribute_ again and works for Python 2 and 3 with one codebase.
          The ``--distribute`` and ``--setuptools`` options are now no-op.
        
        * Updated to pip 1.4.
        
        * Added support for PyPy3k
        
        * Added the option to use a version number with the ``-p`` option to get the
          system copy of that Python version (Windows only)
        
        * Removed embedded ``ez_setup.py``, ``distribute_setup.py`` and
          ``distribute_from_egg.py`` files as part of switching to merged setuptools.
        
        * Fixed ``--relocatable`` to work better on Windows.
        
        * Fixed issue with readline on Windows.
        
        .. _Distribute: https://pypi.python.org/pypi/distribute
        
        1.9.1 (2013-03-08)
        ~~~~~~~~~~~~~~~~~~
        
        * Updated to pip 1.3.1 that fixed a major backward incompatible change of
          parsing URLs to externally hosted packages that got accidentily included
          in pip 1.3.
        
        1.9 (2013-03-07)
        ~~~~~~~~~~~~~~~~
        
        * Unset VIRTUAL_ENV environment variable in deactivate.bat (Pull #364)
        * Upgraded distribute to 0.6.34.
        * Added ``--no-setuptools`` and ``--no-pip`` options (Pull #336).
        * Fixed Issue #373. virtualenv-1.8.4 was failing in cygwin (Pull #382).
        * Fixed Issue #378. virtualenv is now "multiarch" aware on debian/ubuntu (Pull #379).
        * Fixed issue with readline module path on pypy and OSX (Pull #374).
        * Made 64bit detection compatible with Python 2.5 (Pull #393).
        
        
        1.8.4 (2012-11-25)
        ~~~~~~~~~~~~~~~~~~
        
        * Updated distribute to 0.6.31. This fixes #359 (numpy install regression) on
          UTF-8 platforms, and provides a workaround on other platforms:
          ``PYTHONIOENCODING=utf8 pip install numpy``.
        
        * When installing virtualenv via curl, don't forget to filter out arguments
          the distribute setup script won't understand. Fixes #358.
        
        * Added some more integration tests.
        
        * Removed the unsupported embedded setuptools egg for Python 2.4 to reduce
          file size.
        
        1.8.3 (2012-11-21)
        ~~~~~~~~~~~~~~~~~~
        
        * Fixed readline on OS X. Thanks minrk
        
        * Updated distribute to 0.6.30 (improves our error reporting, plus new
          distribute features and fixes). Thanks Gabriel (g2p)
        
        * Added compatibility with multiarch Python (Python 3.3 for example). Added an
          integration test. Thanks Gabriel (g2p)
        
        * Added ability to install distribute from a user-provided egg, rather than the
          bundled sdist, for better speed. Thanks Paul Moore.
        
        * Make the creation of lib64 symlink smarter about already-existing symlink,
          and more explicit about full paths. Fixes #334 and #330. Thanks Jeremy Orem.
        
        * Give lib64 site-dir preference over lib on 64-bit systems, to avoid wrong
          32-bit compiles in the venv. Fixes #328. Thanks Damien Nozay.
        
        * Fix a bug with prompt-handling in ``activate.csh`` in non-interactive csh
          shells. Fixes #332. Thanks Benjamin Root for report and patch.
        
        * Make it possible to create a virtualenv from within a Python
          3.3. pyvenv. Thanks Chris McDonough for the report.
        
        * Add optional --setuptools option to be able to switch to it in case
          distribute is the default (like in Debian).
        
        1.8.2 (2012-09-06)
        ~~~~~~~~~~~~~~~~~~
        
        * Updated the included pip version to 1.2.1 to fix regressions introduced
          there in 1.2.
        
        
        1.8.1 (2012-09-03)
        ~~~~~~~~~~~~~~~~~~
        
        * Fixed distribute version used with `--never-download`. Thanks michr for
          report and patch.
        
        * Fix creating Python 3.3 based virtualenvs by unsetting the
          ``__PYVENV_LAUNCHER__`` environment variable in subprocesses.
        
        
        1.8 (2012-09-01)
        ~~~~~~~~~~~~~~~~
        
        * **Dropped support for Python 2.4** The minimum supported Python version is
          now Python 2.5.
        
        * Fix `--relocatable` on systems that use lib64. Fixes #78. Thanks Branden
          Rolston.
        
        * Symlink some additional modules under Python 3. Fixes #194. Thanks Vinay
          Sajip, Ian Clelland, and Stefan Holek for the report.
        
        * Fix ``--relocatable`` when a script uses ``__future__`` imports. Thanks
          Branden Rolston.
        
        * Fix a bug in the config option parser that prevented setting negative
          options with environemnt variables. Thanks Ralf Schmitt.
        
        * Allow setting ``--no-site-packages`` from the config file.
        
        * Use ``/usr/bin/multiarch-platform`` if available to figure out the include
          directory. Thanks for the patch, Mika Laitio.
        
        * Fix ``install_name_tool`` replacement to work on Python 3.X.
        
        * Handle paths of users' site-packages on Mac OS X correctly when changing
          the prefix.
        
        * Updated the embedded version of distribute to 0.6.28 and pip to 1.2.
        
        
        1.7.2 (2012-06-22)
        ~~~~~~~~~~~~~~~~~~
        
        * Updated to distribute 0.6.27.
        
        * Fix activate.fish on OS X. Fixes #8. Thanks David Schoonover.
        
        * Create a virtualenv-x.x script with the Python version when installing, so
          virtualenv for multiple Python versions can be installed to the same
          script location. Thanks Miki Tebeka.
        
        * Restored ability to create a virtualenv with a path longer than 78
          characters, without breaking creation of virtualenvs with non-ASCII paths.
          Thanks, Bradley Ayers.
        
        * Added ability to create virtualenvs without having installed Apple's
          developers tools (using an own implementation of ``install_name_tool``).
          Thanks Mike Hommey.
        
        * Fixed PyPy and Jython support on Windows. Thanks Konstantin Zemlyak.
        
        * Added pydoc script to ease use. Thanks Marc Abramowitz. Fixes #149.
        
        * Fixed creating a bootstrap script on Python 3. Thanks Raul Leal. Fixes #280.
        
        * Fixed inconsistency when having set the ``PYTHONDONTWRITEBYTECODE`` env var
          with the --distribute option or the ``VIRTUALENV_USE_DISTRIBUTE`` env var.
          ``VIRTUALENV_USE_DISTRIBUTE`` is now considered again as a legacy alias.
        
        
        1.7.1.2 (2012-02-17)
        ~~~~~~~~~~~~~~~~~~~~
        
        * Fixed minor issue in `--relocatable`. Thanks, Cap Petschulat.
        
        
        1.7.1.1 (2012-02-16)
        ~~~~~~~~~~~~~~~~~~~~
        
        * Bumped the version string in ``virtualenv.py`` up, too.
        
        * Fixed rST rendering bug of long description.
        
        
        1.7.1 (2012-02-16)
        ~~~~~~~~~~~~~~~~~~
        
        * Update embedded pip to version 1.1.
        
        * Fix `--relocatable` under Python 3. Thanks Doug Hellmann.
        
        * Added environ PATH modification to activate_this.py. Thanks Doug
          Napoleone. Fixes #14.
        
        * Support creating virtualenvs directly from a Python build directory on
          Windows. Thanks CBWhiz. Fixes #139.
        
        * Use non-recursive symlinks to fix things up for posix_local install
          scheme. Thanks michr.
        
        * Made activate script available for use with msys and cygwin on Windows.
          Thanks Greg Haskins, Cliff Xuan, Jonathan Griffin and Doug Napoleone.
          Fixes #176.
        
        * Fixed creation of virtualenvs on Windows when Python is not installed for
          all users. Thanks Anatoly Techtonik for report and patch and Doug
          Napoleone for testing and confirmation. Fixes #87.
        
        * Fixed creation of virtualenvs using -p in installs where some modules
          that ought to be in the standard library (e.g. `readline`) are actually
          installed in `site-packages` next to `virtualenv.py`. Thanks Greg Haskins
          for report and fix. Fixes #167.
        
        * Added activation script for Powershell (signed by Jannis Leidel). Many
          thanks to Jason R. Coombs.
        
        
        1.7 (2011-11-30)
        ~~~~~~~~~~~~~~~~
        
        * Gave user-provided ``--extra-search-dir`` priority over default dirs for
          finding setuptools/distribute (it already had priority for finding pip).
          Thanks Ethan Jucovy.
        
        * Updated embedded Distribute release to 0.6.24. Thanks Alex Gronholm.
        
        * Made ``--no-site-packages`` behavior the default behavior.  The
          ``--no-site-packages`` flag is still permitted, but displays a warning when
          used. Thanks Chris McDonough.
        
        * New flag: ``--system-site-packages``; this flag should be passed to get the
          previous default global-site-package-including behavior back.
        
        * Added ability to set command options as environment variables and options
          in a ``virtualenv.ini`` file.
        
        * Fixed various encoding related issues with paths. Thanks Gunnlaugur Thor Briem.
        
        * Made ``virtualenv.py`` script executable.
        
        
        1.6.4 (2011-07-21)
        ~~~~~~~~~~~~~~~~~~
        
        * Restored ability to run on Python 2.4, too.
        
        
        1.6.3 (2011-07-16)
        ~~~~~~~~~~~~~~~~~~
        
        * Restored ability to run on Python < 2.7.
        
        
        1.6.2 (2011-07-16)
        ~~~~~~~~~~~~~~~~~~
        
        * Updated embedded distribute release to 0.6.19.
        
        * Updated embedded pip release to 1.0.2.
        
        * Fixed #141 - Be smarter about finding pkg_resources when using the
          non-default Python intepreter (by using the ``-p`` option).
        
        * Fixed #112 - Fixed path in docs.
        
        * Fixed #109 - Corrected doctests of a Logger method.
        
        * Fixed #118 - Fixed creating virtualenvs on platforms that use the
          "posix_local" install scheme, such as Ubuntu with Python 2.7.
        
        * Add missing library to Python 3 virtualenvs (``_dummy_thread``).
        
        
        1.6.1 (2011-04-30)
        ~~~~~~~~~~~~~~~~~~
        
        * Start to use git-flow.
        
        * Added support for PyPy 1.5
        
        * Fixed #121 -- added sanity-checking of the -p argument. Thanks Paul Nasrat.
        
        * Added progress meter for pip installation as well as setuptools. Thanks Ethan
          Jucovy.
        
        * Added --never-download and --search-dir options. Thanks Ethan Jucovy.
        
        
        1.6
        ~~~
        
        * Added Python 3 support! Huge thanks to Vinay Sajip and Vitaly Babiy.
        
        * Fixed creation of virtualenvs on Mac OS X when standard library modules
          (readline) are installed outside the standard library.
        
        * Updated bundled pip to 1.0.
        
        
        1.5.2
        ~~~~~
        
        * Moved main repository to Github: https://github.com/pypa/virtualenv
        
        * Transferred primary maintenance from Ian to Jannis Leidel, Carl Meyer and Brian Rosner
        
        * Fixed a few more pypy related bugs.
        
        * Updated bundled pip to 0.8.2.
        
        * Handed project over to new team of maintainers.
        
        * Moved virtualenv to Github at https://github.com/pypa/virtualenv
        
        
        1.5.1
        ~~~~~
        
        * Added ``_weakrefset`` requirement for Python 2.7.1.
        
        * Fixed Windows regression in 1.5
        
        
        1.5
        ~~~
        
        * Include pip 0.8.1.
        
        * Add support for PyPy.
        
        * Uses a proper temporary dir when installing environment requirements.
        
        * Add ``--prompt`` option to be able to override the default prompt prefix.
        
        * Fix an issue with ``--relocatable`` on Windows.
        
        * Fix issue with installing the wrong version of distribute.
        
        * Add fish and csh activate scripts.
        
        
        1.4.9
        ~~~~~
        
        * Include pip 0.7.2
        
        
        1.4.8
        ~~~~~
        
        * Fix for Mac OS X Framework builds that use
          ``--universal-archs=intel``
        
        * Fix ``activate_this.py`` on Windows.
        
        * Allow ``$PYTHONHOME`` to be set, so long as you use ``source
          bin/activate`` it will get unset; if you leave it set and do not
          activate the environment it will still break the environment.
        
        * Include pip 0.7.1
        
        
        1.4.7
        ~~~~~
        
        * Include pip 0.7
        
        
        1.4.6
        ~~~~~
        
        * Allow ``activate.sh`` to skip updating the prompt (by setting
          ``$VIRTUAL_ENV_DISABLE_PROMPT``).
        
        
        1.4.5
        ~~~~~
        
        * Include pip 0.6.3
        
        * Fix ``activate.bat`` and ``deactivate.bat`` under Windows when
          ``PATH`` contained a parenthesis
        
        
        1.4.4
        ~~~~~
        
        * Include pip 0.6.2 and Distribute 0.6.10
        
        * Create the ``virtualenv`` script even when Setuptools isn't
          installed
        
        * Fix problem with ``virtualenv --relocate`` when ``bin/`` has
          subdirectories (e.g., ``bin/.svn/``); from Alan Franzoni.
        
        * If you set ``$VIRTUALENV_DISTRIBUTE`` then virtualenv will use
          Distribute by default (so you don't have to remember to use
          ``--distribute``).
        
        
        1.4.3
        ~~~~~
        
        * Include pip 0.6.1
        
        
        1.4.2
        ~~~~~
        
        * Fix pip installation on Windows
        
        * Fix use of stand-alone ``virtualenv.py`` (and boot scripts)
        
        * Exclude ~/.local (user site-packages) from environments when using
          ``--no-site-packages``
        
        
        1.4.1
        ~~~~~
        
        * Include pip 0.6
        
        
        1.4
        ~~~
        
        * Updated setuptools to 0.6c11
        
        * Added the --distribute option
        
        * Fixed packaging problem of support-files
        
        
        1.3.4
        ~~~~~
        
        * Virtualenv now copies the actual embedded Python binary on
          Mac OS X to fix a hang on Snow Leopard (10.6).
        
        * Fail more gracefully on Windows when ``win32api`` is not installed.
        
        * Fix site-packages taking precedent over Jython's ``__classpath__``
          and also specially handle the new ``__pyclasspath__`` entry in
          ``sys.path``.
        
        * Now copies Jython's ``registry`` file to the virtualenv if it exists.
        
        * Better find libraries when compiling extensions on Windows.
        
        * Create ``Scripts\pythonw.exe`` on Windows.
        
        * Added support for the Debian/Ubuntu
          ``/usr/lib/pythonX.Y/dist-packages`` directory.
        
        * Set ``distutils.sysconfig.get_config_vars()['LIBDIR']`` (based on
          ``sys.real_prefix``) which is reported to help building on Windows.
        
        * Make ``deactivate`` work on ksh
        
        * Fixes for ``--python``: make it work with ``--relocatable`` and the
          symlink created to the exact Python version.
        
        
        1.3.3
        ~~~~~
        
        * Use Windows newlines in ``activate.bat``, which has been reported to help
          when using non-ASCII directory names.
        
        * Fixed compatibility with Jython 2.5b1.
        
        * Added a function ``virtualenv.install_python`` for more fine-grained
          access to what ``virtualenv.create_environment`` does.
        
        * Fix `a problem <https://bugs.launchpad.net/virtualenv/+bug/241581>`_
          with Windows and paths that contain spaces.
        
        * If ``/path/to/env/.pydistutils.cfg`` exists (or
          ``/path/to/env/pydistutils.cfg`` on Windows systems) then ignore
          ``~/.pydistutils.cfg`` and use that other file instead.
        
        * Fix ` a problem
          <https://bugs.launchpad.net/virtualenv/+bug/340050>`_ picking up
          some ``.so`` libraries in ``/usr/local``.
        
        
        1.3.2
        ~~~~~
        
        * Remove the ``[install] prefix = ...`` setting from the virtualenv
          ``distutils.cfg`` -- this has been causing problems for a lot of
          people, in rather obscure ways.
        
        * If you use a boot script it will attempt to import ``virtualenv``
          and find a pre-downloaded Setuptools egg using that.
        
        * Added platform-specific paths, like ``/usr/lib/pythonX.Y/plat-linux2``
        
        
        1.3.1
        ~~~~~
        
        * Real Python 2.6 compatibility.  Backported the Python 2.6 updates to
          ``site.py``, including `user directories
          <http://docs.python.org/dev/whatsnew/2.6.html#pep-370-per-user-site-packages-directory>`_
          (this means older versions of Python will support user directories,
          whether intended or not).
        
        * Always set ``[install] prefix`` in ``distutils.cfg`` -- previously
          on some platforms where a system-wide ``distutils.cfg`` was present
          with a ``prefix`` setting, packages would be installed globally
          (usually in ``/usr/local/lib/pythonX.Y/site-packages``).
        
        * Sometimes Cygwin seems to leave ``.exe`` off ``sys.executable``; a
          workaround is added.
        
        * Fix ``--python`` option.
        
        * Fixed handling of Jython environments that use a
          jython-complete.jar.
        
        
        1.3
        ~~~
        
        * Update to Setuptools 0.6c9
        * Added an option ``virtualenv --relocatable EXISTING_ENV``, which
          will make an existing environment "relocatable" -- the paths will
          not be absolute in scripts, ``.egg-info`` and ``.pth`` files.  This
          may assist in building environments that can be moved and copied.
          You have to run this *after* any new packages installed.
        * Added ``bin/activate_this.py``, a file you can use like
          ``execfile("path_to/activate_this.py",
          dict(__file__="path_to/activate_this.py"))`` -- this will activate
          the environment in place, similar to what `the mod_wsgi example
          does <http://code.google.com/p/modwsgi/wiki/VirtualEnvironments>`_.
        * For Mac framework builds of Python, the site-packages directory
          ``/Library/Python/X.Y/site-packages`` is added to ``sys.path``, from
          Andrea Rech.
        * Some platform-specific modules in Macs are added to the path now
          (``plat-darwin/``, ``plat-mac/``, ``plat-mac/lib-scriptpackages``),
          from Andrea Rech.
        * Fixed a small Bashism in the ``bin/activate`` shell script.
        * Added ``__future__`` to the list of required modules, for Python
          2.3.  You'll still need to backport your own ``subprocess`` module.
        * Fixed the ``__classpath__`` entry in Jython's ``sys.path`` taking
          precedent over virtualenv's libs.
        
        
        1.2
        ~~~
        
        * Added a ``--python`` option to select the Python interpreter.
        * Add ``warnings`` to the modules copied over, for Python 2.6 support.
        * Add ``sets`` to the module copied over for Python 2.3 (though Python
          2.3 still probably doesn't work).
        
        
        1.1.1
        ~~~~~
        
        * Added support for Jython 2.5.
        
        
        1.1
        ~~~
        
        * Added support for Python 2.6.
        * Fix a problem with missing ``DLLs/zlib.pyd`` on Windows.  Create
        * ``bin/python`` (or ``bin/python.exe``) even when you run virtualenv
          with an interpreter named, e.g., ``python2.4``
        * Fix MacPorts Python
        * Added --unzip-setuptools option
        * Update to Setuptools 0.6c8
        * If the current directory is not writable, run ez_setup.py in ``/tmp``
        * Copy or symlink over the ``include`` directory so that packages will
          more consistently compile.
        
        
        1.0
        ~~~
        
        * Fix build on systems that use ``/usr/lib64``, distinct from
          ``/usr/lib`` (specifically CentOS x64).
        * Fixed bug in ``--clear``.
        * Fixed typos in ``deactivate.bat``.
        * Preserve ``$PYTHONPATH`` when calling subprocesses.
        
        
        0.9.2
        ~~~~~
        
        * Fix include dir copying on Windows (makes compiling possible).
        * Include the main ``lib-tk`` in the path.
        * Patch ``distutils.sysconfig``: ``get_python_inc`` and
          ``get_python_lib`` to point to the global locations.
        * Install ``distutils.cfg`` before Setuptools, so that system
          customizations of ``distutils.cfg`` won't effect the installation.
        * Add ``bin/pythonX.Y`` to the virtualenv (in addition to
          ``bin/python``).
        * Fixed an issue with Mac Framework Python builds, and absolute paths
          (from Ronald Oussoren).
        
        
        0.9.1
        ~~~~~
        
        * Improve ability to create a virtualenv from inside a virtualenv.
        * Fix a little bug in ``bin/activate``.
        * Actually get ``distutils.cfg`` to work reliably.
        
        
        0.9
        ~~~
        
        * Added ``lib-dynload`` and ``config`` to things that need to be
          copied over in an environment.
        * Copy over or symlink the ``include`` directory, so that you can
          build packages that need the C headers.
        * Include a ``distutils`` package, so you can locally update
          ``distutils.cfg`` (in ``lib/pythonX.Y/distutils/distutils.cfg``).
        * Better avoid downloading Setuptools, and hitting PyPI on environment
          creation.
        * Fix a problem creating a ``lib64/`` directory.
        * Should work on MacOSX Framework builds (the default Python
          installations on Mac).  Thanks to Ronald Oussoren.
        
        
        0.8.4
        ~~~~~
        
        * Windows installs would sometimes give errors about ``sys.prefix`` that
          were inaccurate.
        * Slightly prettier output.
        
        
        0.8.3
        ~~~~~
        
        * Added support for Windows.
        
        
        0.8.2
        ~~~~~
        
        * Give a better warning if you are on an unsupported platform (Mac
          Framework Pythons, and Windows).
        * Give error about running while inside a workingenv.
        * Give better error message about Python 2.3.
        
        
        0.8.1
        ~~~~~
        
        Fixed packaging of the library.
        
        
        0.8
        ~~~
        
        Initial release.  Everything is changed and new!
        
Keywords: setuptools deployment installation distutils
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.5
Classifier: Programming Language :: Python :: 2.6
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.1
Classifier: Programming Language :: Python :: 3.2