dev-python/nose-1.3.0 currently depends on dev-python/unittest2 with FEATURES=test. This is bad, as unittest2 fails with Py3.3 (cf. bug #450762). As this dependency is only used for python2.6, I'd suggest to mark this as such in the ebuild.
commit 103f27857659150cd7b94a8d31ee8dd96b6ff5b6 Author: Justin Lecher <jlec@gentoo.org> Date: Wed Feb 3 09:34:20 2016 +0100 dev-python/nose: Drop old obsoletes: Gentoo-Bug: https://bugs.gentoo.org/show_bug.cgi?id=449748 Gentoo-Bug: https://bugs.gentoo.org/show_bug.cgi?id=449748 Gentoo-Bug: https://bugs.gentoo.org/show_bug.cgi?id=462126 Gentoo-Bug: https://bugs.gentoo.org/show_bug.cgi?id=466080 Gentoo-Bug: https://bugs.gentoo.org/show_bug.cgi?id=485022 Package-Manager: portage-2.2.27 Signed-off-by: Justin Lecher <jlec@gentoo.org> https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=103f27857659150cd7b94a8d31ee8dd96b6ff5b6