New portage uses a local epydoc useflag depending on dev-python/epydoc which isn't keyworded on your archs. Currently that flag is masked in base, that is going to change however. So please either keyword dev-python/epydoc or add epydoc to your profiles use.mask.
masked on OSX profile
added ~ppc64
~sparc-fbsd missing, feel free to unmask when you want, I'll fix this tomorrow if Roy don't fix it before.
added ~mips
Done for sparc-fbsd.
done