The following ebuilds inherit eutils for preserve_old_lib{,_notify}. Since these functions have been split off to preserve-libs.eclass, the following ebuild should be updated to inherit preserve-libs directly. dev-libs/gmp-6.0.0a Please also check if preserve_old_lib{,_notify} were the only functions for which eutils was needed, in which case it can be dropped.
In'tree ebuilds don't use preserve libs anymore.