Rosegarden (1.6.1) installs and runs just fine. But on startup it says that lilypond and XML-Twig are needed to enable certain features. That was no big problem since I could just emerge them, but perhaps rosegarden should depend on them or at least be emerged when a specific useflag is set. Reproducible: Always Steps to Reproduce: 1.don't have lilypond and XML-Twig installed 2.Start Rosegarden 3.Notice the two warnings
Those are optional deps, it's up to you to merge them or not. USE flags are not there for similar automagic deps.