app-mobilephone/heimdal-9999 has some dependencies like dev-qt/qtcore:5=, but dev-qt/* currently does not explicitly define subslots so the behaviour is undefined. In the future, dev-qt/* will define a subslot, but that will only be required for a very limited number of packages. I can't see any use of private API or relevant compile-time conditionals, so please remove the subslot operators to avoid triggering unnecessary rebuilds.
commit c329eb11387d4ac8d18ee16ec307eac06516a727 Author: Lars Wendler <polynomial-c@gentoo.org> Date: Thu Jan 14 11:10:24 2016 app-mobilephone/heimdall: Removed subslot dependency from qtwidgets. Fixes Gentoo bug #571818 Package-Manager: portage-2.2.26 Signed-off-by: Lars Wendler <polynomial-c@gentoo.org> l