Hello, ibus-1.5.9-r1 with USE="vala -introspection" fails configure: checking for gobject-introspection... no (disabled, use --enable-introspection to enable) configure: error: Vala bindings require GObject Introspection Please note that with USE="-vala" ibus also fails to build (see bug 519220).
Created attachment 392880 [details] build.log
Created attachment 392882 [details] emerge --info
+ 19 Jan 2015; Pacho Ramos <pacho@gentoo.org> ibus-1.5.9-r1.ebuild: + eautoreconf is needed (#536022 by OGINO Masanori), USE vala needs USE + introspection (#534220 by Andrew Savchenko) +