I ran into this output of portage today: """ WARNING: One or more updates/rebuilds have been skipped due to a dependency conflict: dev-libs/nettle:0 (dev-libs/nettle-3.1.1:0/6::gentoo, ebuild scheduled for merge) conflicts with <dev-libs/nettle-3[gmp,abi_x86_32(-),abi_x86_64(-)] required by (net-libs/gnutls-3.3.15-r1:0/0::gentoo, installed) ^ ^ """ Cutting that a bit this part """ dev-libs/nettle-3.1.1:0/6 <dev-libs/nettle-3[gmp,abi_x86_32 ^ ^ """ seems to mis-highlight the version difference, pointing into to (a number in) the use flags fraction of the atom. Not too much of a problem, but maybe you wanted to know or it's easy to fix.