emerge: there are no ebuilds to satisfy ">=dev-util/gtk-update-icon-cache-3". (dependency required by "x11-libs/gtk+-3.16.2::gnome" [installed]) (dependency required by "app-dicts/gnome-dictionary-3.16.1::gnome" [installed]) (dependency required by "gnome-base/gnome-extra-apps-3.16.0::gnome" [installed]) (dependency required by "gnome-base/gnome-3.16.0::gnome[extras]" [installed]) (dependency required by "@selected" [set]) (dependency required by "@world" [argument]) That ebuild don't exist...
# eix dev-util/gtk-update-icon-cache [I] dev-util/gtk-update-icon-cache [1] Available versions: (~)2.24.27 (~)3.14.13 Installed versions: 3.14.13(01:08:39 12/05/2015) Homepage: http://www.gtk.org/ Description: GTK update icon cache [1] "gnome" /mnt/devel/devel/overlays/gnome it does.