net-misc/mikutter-0.2.12 depends on dev-ruby/ruby-gnome2 now, but mikutter works perfectly without dev-ruby/ruby-gnome2. mikutter's all requirements around Gtk+ are satisfied by dev-ruby/ruby-gtk2. ruby-gnome2 is not needed. Please change dev-ruby/ruby-gnome2 to dev-ruby/ruby-gtk2 dependence.
Commit the fix in CVS. Thanks.