pypa/virtualenv — pull request #336 by pfmoore (2012-09-14 12:37:37+00:00)
Title: Add --no-setuptools and --no-pip options.

In specialised circumstances (e.g., when testing new versions of distribute
or pip) it can be useful to create a virtualenv which does not include these
packages pre-installed. Add options to specify that when creating the
virtualenv.