mirror of https://github.com/pypa/pip
66 lines
2.0 KiB
ReStructuredText
66 lines
2.0 KiB
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===========
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Other tools
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===========
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virtualenv
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----------
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pip is most nutritious when used with `virtualenv
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<http://pypi.python.org/pypi/virtualenv>`__. One of the reasons pip
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doesn't install "multi-version" eggs is that virtualenv removes much of the need
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for it. Because pip is installed by virtualenv, just use
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``path/to/my/environment/bin/pip`` to install things into that
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specific environment.
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To tell pip to only run if there is a virtualenv currently activated,
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and to bail if not, use::
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export PIP_REQUIRE_VIRTUALENV=true
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easy_install
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------------
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pip was originally written to improve on `easy_install <http://pythonhosted.org/setuptools/easy_install.html>`_ in the following ways:
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* All packages are downloaded before installation. Partially-completed
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installation doesn't occur as a result.
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* Care is taken to present useful output on the console.
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* The reasons for actions are kept track of. For instance, if a package is
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being installed, pip keeps track of why that package was required.
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* Error messages should be useful.
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* The code is relatively concise and cohesive, making it easier to use
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programmatically.
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* Packages don't have to be installed as egg archives, they can be installed
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flat (while keeping the egg metadata).
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* Native support for other version control systems (Git, Mercurial and Bazaar)
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* Uninstallation of packages.
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* Simple to define fixed sets of requirements and reliably reproduce a
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set of packages.
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pip doesn't do everything that easy_install does. Specifically:
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* It cannot install from eggs. That’s not a problem anymore though because pip
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supports the superior binary `wheel format
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<https://wheel.readthedocs.org/en/latest/>`_ since the 1.4 release.
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* It is incompatible with some packages that extensively customize distutils
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or setuptools in their ``setup.py`` files.
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buildout
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--------
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If you are using `zc.buildout
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<http://pypi.python.org/pypi/zc.buildout>`_ you should look at
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`gp.recipe.pip <http://pypi.python.org/pypi/gp.recipe.pip>`_ as an
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option to use pip and virtualenv in your buildouts.
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