>=media-video/mpv-0.9.1 is adding a rubberband useflag, but media-libs/rubberband is not keyworded on your arch, so we're adding a package.use.mask entry. Please remove this in case you keyword that package. Since hppa prefers dropping keywords, we are dropping hppa on mpv-0.9.1. Please re-add hppa keyword once you deal with the rubberband issue.
Marked ~hppa. Wow, that needed exactly two files to be changed because keywords were simply dropped (and re-added). Bless the poor arch teams that now have to review their profile directories again. Oh, wait, I'm in those, too.
Marked ~ppc64.
Keyworded on alpha, removed USE-mask.
This is going nowhere. media-libs/rubberband is requested to be keyworded in bug 574786. We'll see how it goes and decide what should be done for media-video/mpv[rubberband] afterwards.