The repository open-overly is no longer maintained [1]. This repository contained mainly ebuilds for mate-desktop environment. I currently maintain ebuilds for mate-desktop 1.12 in: https://github.com/oz123/gentoo-mate-112 I hope these ebuilds will be useful for gentoo users, and that the can be integrated in gentoo's main repository. [1]: see https://bugs.gentoo.org/show_bug.cgi?id=565968
Added now. I'm sorry this took so long, and it may take a few more minutes for the online copy to update.