The problem is I think with making the package stable (amd64) while cuda USE flag is masked as unstable in Gentoo itself, which prevents emerging. ================================================================================= Total: 16 packages (15 new, 1 reinstall), Size of downloads: 227,271 KiB !!! Multiple package instances within a single package slot have been pulled !!! into the dependency graph, resulting in a slot conflict: sci-libs/cholmod:0 (sci-libs/cholmod-2.1.2:0/0::gentoo, ebuild scheduled for merge) pulled in by sci-libs/cholmod (Argument) (sci-libs/cholmod-2.1.2:0/0::gentoo, installed) pulled in by >=sci-libs/cholmod-2.1.2[cuda?,doc?,metis?,lapack?] required by (sci-libs/suitesparse-4.2.1:0/0::gentoo, installed) ^^^^^ It might be possible to solve this slot collision by applying one of the following solutions: - sci-libs/cholmod-2.1.2 (Change USE: +cuda) =================================================================================
but the cuda USE is masked in stable too
