pypa/pip — pull request #1369 by msabramo (2013-12-06 05:59:31+00:00)
Title: Make freeze ignore wsgiref

This makes `wsgiref` (part of the standard library) not show up in `pip freeze` output.

I know that `pip freeze --local` also omits it, but I don't see why I should have to specify `--local` when I created a virtualenv with `--no-site-packages`.