--- audacious-plugins-3.7.1.ebuild	2016-02-14 20:01:53.000000000 +0300
+++ /tmp/audacious-plugins-3.7.1.ebuild	2016-05-08 16:23:35.543716480 +0300
@@ -19,7 +19,9 @@ IUSE="aac +adplug alsa bs2b cdda cue ffm
 lame libnotify libsamplerate lirc mms mp3 nls pulseaudio qt5 scrobbler sdl sid sndfile vorbis wavpack"
 REQUIRED_USE="
 	?? ( gtk gtk3 qt5 )
+    libnotify? ( || ( gtk gtk3 ) )
 "
+# bug 573886: configure: error: --enable-notify cannot be used without --enable-gtk
 
 RDEPEND="app-arch/unzip
 	>=dev-libs/dbus-glib-0.60