Currently app-doc/doxygen have STRICT="mirror" with no visible reason. Please remove it.
Thanks! commit 4c2c81ce7f192152a17d3262ab0c9b2168430ade Author: Matthias Maier <tamiko@gentoo.org> Date: Sat Feb 27 20:51:18 2016 -0600 app-doc/doxygen: remove unnecessary RESTRICT="mirror", bug #564712 All components of the tarball can be freely distributed subject to the GPL-2. Gentoo-Bug: 564712 Package-Manager: portage-2.2.26