It is needed for games-emulation/raine as shown in bug 654336 Thanks
commit c406c020a2bf41eaabab35acc42864ce2679c279 Author: Michał Górny <mgorny@gentoo.org> Date: Sat Jul 28 13:50:46 2018 +0200 games-emulation/raine: Remove last-rited pkg Closes: https://bugs.gentoo.org/654336