nose-devs/nose — pull request #699 by ianw (2013-06-20 03:12:11+00:00)
Title: Look for unittest2 in skip plugin

If unittest2 is available, try to use its SkipTest class rather than a
nose internal version. Inspired by better integration with testtools
for older python releases (see [1]).

[1] https://review.openstack.org/#/c/33056/