https://github.com/pimutils/khal/releases/tag/v0.9.7 0.9.6 ebuild works unmodified
commit 75625cf65d73b8e1dd6e20a1402ba47734458ceb Author: Amy Liffey <amynka@gentoo.org> Date: Tue Oct 3 10:10:54 2017 +0200 app-misc/khal: version bump 0.9.7 bug #631160 Thank you !