Hallo, gnome-base/gnome-desktop-3.12.2 does not build due to a missing dependency of dev-util/gdbus-codegen.
+ 29 Sep 2014; Pacho Ramos <pacho@gentoo.org> -gnome-desktop-3.10.2.ebuild, + -gnome-desktop-3.12.1.ebuild, gnome-desktop-3.12.2.ebuild: + Add missing DEPEND on gdbus-codegen (#523846 by Tom Nachdenk), drop old +