Error was: Binary /usr/bin/svn seems to be missing! Overlay type "svn" not supported. Did you emerge dev-util/subversion? Reproducible: Always Steps to Reproduce: 1. install layman 2. try to add sunrise overlay (layman -f -a sunrise) 3. cry
When you choose an overlay being held in an svn source of course it does.
*** Bug 255941 has been marked as a duplicate of this bug. ***