matplotlib/matplotlib — pull request #2139 by mdboom (2013-06-19 17:01:35+00:00)
Title: Don't install the nose KnownFailure plugin as a pkg_resources entry_point

As reported by @fperez on matplotlib-devel "Weird KnownFailure problem in IPython test suite with mpl master", this can interfere with the KnownFailure plugin in IPython.