The 64bit version of media-sound/spotify (0.9.11.27 at the moment) deadlocks if Qt libraries aren't built with USE=glib enabled. The corresponding error message is similar to this: [watchdog.cpp:171 ] Deadlock detected (Thread: gui) (line number may differ, didn't rebuild dev-qt/* for reproducing). GUI doesn't start up. Reproducible: Always Steps to Reproduce: 1. echo "dev-qt/* -glib" >> /etc/porate/package.use 2. emerge dev-qt/* [installed] 3. spotify Actual Results: Above error message on terminal, no GUI to spot(ify) anywhere. ;( Expected Results: Spotify GUI showing up. To our astonishment, installing the 32bit version to ~/.local worked fine, strace(1) as ltrace(1) where not directly helping, but ltrace showed a massive amount of calls to Qt*. A first guess being missing USE flags lead to USE=glib being the most promising one, a second look showed that emul-linux-x86-qtlibs actually is linked against it. Tried it, worked.
fixed in r1