pyenv-pip-migrate is a pyenv plugin that provides a pyenv migrate command to migrate pip package from a Python version to another.

Installing pyenv-pip-migrate as a pyenv plugin will give you access to the pyenv migrate command.

$ git clone https://github.com/pyenv/pyenv-pip-migrate.git $(pyenv root)/plugins/pyenv-pip-migrate

This will install the latest development version of pyenv-pip-migrate into the $(pyenv root)/plugins/pyenv-pip-migrate directory. From that directory, you can check out a specific release tag. To update pyenv-pip-migrate, run git pull to download the latest changes.

macOS users can install pyenv-pip-migrate with the Homebrew package manager. This will give you access to the pyenv-migrate command. If you have pyenv installed, you will also be able to use the pyenv migrate command.

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

$ brew install pyenv-pip-migrate

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

$ brew install --HEAD pyenv-pip-migrate

pyenv-pip-migrate uses pip freeze to dump all installed packages in a Python version, and then tries to pip install them into another version.

Let's say if you have following two versions in pyenv.

$ pyenv versions
* 2.7.4 (set by /home/yyuu/.pyenv/version)
  2.7.5
$ pip freeze
distribute==0.6.43
nose==1.3.0
wsgiref==0.1.2

To migrate installed packages from 2.7.4 to 2.7.5, use pyenv migrate.

$ pyenv migrate 2.7.4 2.7.5
$ pyenv global 2.7.5
$ pip freeze
distribute==0.6.43
nose==1.3.0
wsgiref==0.1.2

• 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.