Upstream build system has: > # this is a no-op - not nice i know, but real no point in making it optional... > if(Qt${QT_VERSION_MAJOR}Multimedia_FOUND) > list(APPEND CMAKE_STATUS_AUDIO_BACKENDS "Qt${QT_VERSION_MAJOR}Multimedia") > endif() We (and KDE upstream) are trying to get away from media-libs/phonon, this is one of the few external packages depending on in by default, while IUSE=kde is actually off by default - does that still make sense? Seems it only adds an additional audio backend anyway. Background: cutting down on ~ppc revdeps.