'dev-qt/qtgui:4[dbus(+),glib]' is now pointless, fcitx ebuilds already have qtdbus dep, most likely fcitx does not need qdbusviewer, so the dep should be changed to 'dev-qt/qtgui:4[glib]', see https://bugs.gentoo.org/show_bug.cgi?id=478222#c4
fixed