Attempt to emerge net-irc/xchat-gnome-0.24.1 failed with the following error: checking whether to notification sounds using libnotify... no checking whether to enable notification sounds using libcanberra... yes checking for LIBCANBERRAGTK... configure: error: Package requirements (libcanberra-gtk >= 0.3) were not met: No package 'libcanberra-gtk' found Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix. Alternatively, you may set the environment variables LIBCANBERRAGTK_CFLAGS and LIBCANBERRAGTK_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details. Looks lie it misses dependency on media-libs/libcanberra[gtk] somewhere...
Created attachment 173956 [details] config.log
Created attachment 173957 [details] build.log
Created attachment 173958 [details] emerge --info
And yes with media-libs/libcanberra[gtk] installed xchat-gnome emerges successfully.
the ebuild already has a check for missing gtk support. I just forgot to add the use_enable in the first place. Fixed without a bump.