See the tracker bug. if ! version_is_at_least 3.16.0 ${REPLACING_VERSIONS}; then This doesn't account for empty RV or >1 value.
commit db0661fddcc828d5c1b05088c761c55ef796c35d Author: Mart Raudsepp <leio@gentoo.org> Date: Sun Mar 19 13:36:33 2017 +0200 gnome-base/gdm: Remove 3.16 upgrade notice for 3.22 and fix it for pathological cases for 3.20 Gentoo-bug: 589470