:2 slot is only needed by geany-plugins, gimp and balsa for some USE flags. I would then move webkit-gtk to testing and package.use.stable.mask the offending USE flags on alpha. Do you see any issues with this? Thanks
+ 31 Oct 2014; Pacho Ramos <pacho@gentoo.org> webkit-gtk-2.2.6-r201.ebuild, + webkit-gtk-2.4.4-r201.ebuild, webkit-gtk-2.4.6.ebuild, + webkit-gtk-2.4.7.ebuild: + Move to ~alpha, bug #525196 +