kde-base/kdelibs-9999 pulls in media-sound/phonon-4.4.3 due to missing "xcb" use flacg in media-sound/phonon-9999 Reproducible: Always
I'm working on resolving this.
Should be fixed by commit 4648ab88cfa169f09d89945c75c75ef072b47db3 for all kdelibs-* in kde overlay.