games-rpg calls base_src_prepare but does not inherit base.eclass. This appears to be assuming that games.eclass inherits base. Since we are trying to remove base.eclass inherits from eclasses, please either directly inherit base.eclass or change the ebuild to not use base_src_prepare. If you would prefer, I can make the change, just give me an ACK.
+ 27 Feb 2014; Julian Ospald <hasufell@gentoo.org> mana-0.6.1.ebuild: + rm base.eclass usage wrt #502974