If you want to unmask "braille" USE flag, you will need to keyword this packages Thanks
*** Bug 495240 has been marked as a duplicate of this bug. ***
Hi alpha, I am re-adding you here since we found out that app-accessibility/brltty was missing a keyword to a recent enough version with USE=python. For now I commited a package.use.mask to your profile in order to bring the fix to others arches.
Keyworded ~ppc and ~ppc64 and braille unmasked
I guess they will be ok with the use.mask