pypa/pip — pull request #671 by pfmoore (2012-09-10 20:01:55+00:00)
Title: Fix for issue 670 (unorderable Link types under Python 3)

This patch, including a test, fixes issue 670 (Link types are not orderable in Python 3, this causes issues when the same version of a package is found under 2 different URLs)

Test fails on unpatched pip under Python 3, passes with the patched code.