Please bump dev-python/django-evolution to >=0.7.1.
clearly this is set as a dep for reviewboard. Here is the current path; https://pypi.python.org/pypi/django_evolution/0.7.2 says Home Page: http://code.google.com/p/django-evolution/ says The project has moved to https://github.com/beanbaginc/django-evolution says https://github.com/beanbaginc/django-evolution/releases says release-0.7beta1 so unless I totally missed it, I can't yet. If I totally missed it feel free to tell. When I can acquire >=django-evolution-0.7.1, no worries mate
http://downloads.reviewboard.org/releases/django-evolution/0.7/
yep, I totally forgot about it and missed it. *django-evolution-0.7.2 (05 Jun 2014) 05 Jun 2014; Ian Delaney <idella4@gentoo.org> +django-evolution-0.7.2.ebuild: bump; add pypy support, tidy, closes Bug # 512152 by kensington no worries