pyenv-virtualenv is a pyenv plugin that provides a pyenv virtualenv command to create virtualenv for Python on UNIX-like systems.

(NOTICE: If you are an existing user of virtualenvwrapper and you love it, pyenv-virtualenvwrapper may help you to manage your virtualenvs.)

This will install the latest development version of pyenv-virtualenv into the ~/.pyenv/plugins/pyenv-virtualenv directory.

Important note: If you installed pyenv into a non-standard directory, make sure that you clone this repo into the 'plugins' directory of wherever you installed into.

From inside that directory you can:

• Check out a specific release tag.
• Get the latest development release by running git pull to download the latest changes.

1. Check out pyenv-virtualenv into plugin directory

    $ git clone https://github.com/yyuu/pyenv-virtualenv.git ~/.pyenv/plugins/pyenv-virtualenv
   

2. Add pyenv virtualenv-init to your shell to enable activation of virtualenv

    $ echo 'eval "$(pyenv virtualenv-init -)"' >> ~/.bash_profile
   

   Zsh note: Modify your ~/.zshenv file instead of ~/.bash_profile.

3. Restart your shell to the enable pyenv-virtualenv

    $ exec "$SHELL"
   

Mac OS X users can install pyenv-virtualenv with the Homebrew package manager. This will give you access to the pyenv-virtualenv command. If you have pyenv installed, you will also be able to use the pyenv virtualenv command.

This is recommended method of installation if you installed pyenv with Homebrew.

$ brew install pyenv-virtualenv

Or, if you would like to install the latest development release:

$ brew install --HEAD pyenv-virtualenv

After installation, you'll still need to add eval "$(pyenv virtualenv-init -)" to your profile (as stated in the caveats). You'll only ever have to do this once.

To create a virtualenv for the Python version use with pyenv, run pyenv virtualenv, specifying the Python version you want and the name of the virtualenv directory. For example,

$ pyenv virtualenv 2.7.7 my-virtual-env-2.7.7

will create a virtualenv based on Python 2.7.7 under ~/.pyenv/versions in a folder called my-virtual-env-2.7.7.

If there is only one argument is given to pyenv virtualenv, virtualenv will be created with given name based on current version.

$ pyenv version
3.4.1 (set by /home/yyuu/.pyenv/version)
$ pyenv virtualenv venv34

pyenv virtualenvs shows you the list of existing virtualenvs.

$ pyenv shell venv27
$ pyenv virtualenvs
* venv27 (created from /home/yyuu/.pyenv/versions/2.7.7)
  venv34 (created from /home/yyuu/.pyenv/versions/3.4.1)

Some external tools (e.g. jedi) might require you to activate the virtualenv. The pyenv-virtualenv will automatically activate/deactivate the virtualenv if the eval "$(pyenv virtualenv-init -)" is properly configured in your shell.

You can also activate and deactivate a pyenv virtualenv this way:

pyenv activate <name>
pyenv deactivate

There is venv module available for CPython 3.3 and newer. It provides a command-line tool pyvenv which is the successor of virtualenv and distributed by default.

The pyenv-virtualenv uses pyvenv if it is available and the virtualenv is not available.

You can set certain environment variables to control the pyenv-virtualenv.

• PYENV_VIRTUALENV_CACHE_PATH, if set, specifies a directory to use for caching downloaded package files.
• VIRTUALENV_VERSION, if set, forces pyenv-virtualenv to install desired version of virtualenv. If the virtualenv has not been installed, pyenv-virtualenv will try to install the given version of virtualenv.
• EZ_SETUP and GET_PIP, if set and pyvenv is preferred than virtualenv, use ez_setup.py and get_pip.py at specified location.
• EZ_SETUP_URL and GET_PIP_URL, if set and pyvenv is preferred than virtualenv, download ez_setup.py and get_pip.py from specified URL.
• SETUPTOOLS_VERSION and PIP_VERSION, if set and pyvenv is preferred than virtualenv, install specified version of setuptools and pip.

• Display information on auto-(de)?activation
• Support manual (de)?activation with auto-activation enabled (#32, #34)
• Exit as error when (de)?activation failed
• Use https://bootstrap.pypa.io/ to install setuptools and pip
• Create backup of original virtualenv within $(pyenv root)/versions when --upgrade

• Fix incompatibility issue of pyenv activate and pyenv deactivate (#26)
• Workaround for the issue with pyenv-which-ext (#26)

• Add pyenv virtualenv-init to enable auto-activation feature (#24)
• Create symlinks for executables with version suffix (pyenv/pyenv#182)

• Use new style GH raw url to avoid redirects (raw.github.com -> raw.githubusercontent.com)
• Repaired virtualenv activation and deactivation for the fish shell (#23)

• Display error if pyenv activate was invoked as a command
• Fix completion of pyenv activate (#15)
• Use virtualenv instead of pyvenv if -p has given (pyenv/pyenv#158)

• Add activate and deactivate to make pyenv-virtualenv work with jedi (#9)
• Use ensurepip to install pip if it is available
• Unset PIP_REQUIRE_VENV to avoid problem on the installation of virtualenv (#10)
• Add tests

• Fix install script

• Support environment variables of EZ_SETUP and GET_PIP.
• Support a short option -p of virtualenv.

• Use latest release of setuptools and pip if the version not given via environment variables.

• Removed bundled virtualenv.py script. Now pyenv-virtualenv installs virtualenv package into source version and then use it.
• On Python 3.3+, use pyvenv as virtualenv command if virtualenv is not available.
• Install setuptools and pip into environments created by pyvenv.

• Add pyenv virtualenvs to list all virtualenv versions.
• EXPERIMENTAL: Add --upgrade option to re-create virtualenv with migrating packages

• Remove python-virtualenv which was no longer used.
• Change the installation path of the virtualenv.py script. (./libexec -> ./libexec/pyenv-virtualenv/${VIRTUALENV_VERSION})
• Download virtualenv.py if desired version has not been installed.

• Display virtualenv information in --help and --version
• Update virtualenv version; 1.8.4 -> 1.9.1

• Rename the project; s/python-virtualenv/pyenv-virtualenv/g
• The pyenv-virtualenv script is not depending on python-virtualenv now. python-virtualenv will left for compatibility and will not continue for future releases.
• Update virtualenv version; 1.8.2 -> 1.8.4

• Add pyenv 0.2.x (rbenv 0.4.x) style help messages.

• Create virtualenv with exact name of python executables.
• Changed command-line options of python-virtualenv. First argument should be a path to the python executable.
• Add install script.

• Initial public release.

(The MIT License)

• Copyright (c) 2013 Yamashita, Yuu

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.