KMNAME in the ebuild is libkscreen. The build fails that way. Changing KMNAME to libkscreen2 fixes the problem. Reproducible: Always
Also, it has file collisions with x11-libs/libkscreen.
Thanks, fixed in git. I am working on the collision issue upstream - it's supposed to be coinstallable. http://git.overlays.gentoo.org/gitweb/?p=proj/kde.git;a=commit;h=3a4952559036b05a026340f08e800ea4fefac8cd