Created attachment 391800 [details] doomsday-1.14.5-openal-link.patch.out renamed the 1.10.2-r1.ebuild copied doomsday-1.10.2-openal-link.patch to doomsday-1.14.5-openal-link.patch . patch does not fully apply. Somebody has to adapt it. So I disabled the patch and the merge went fine. At the moment I have to fight with: https://bugs.gentoo.org/show_bug.cgi?id=532678
doomsday-1.14.5 is in portage, thanks for the bug report.