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# Installation

Warning

We advise installing virtualenv-1.9 or greater. Prior to version 1.9, the pip included in virtualenv did 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 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 version X.X 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.

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