Hi, Several months ago I made this issue for keywording the games-emulation/jgemu meta package which is a collection of minimal emulators for the command-line games-emulation/jgrf frontend with a focus on accuracy.
https://bugs.gentoo.org/891201 Upstream is very interested in any portability issues and distro integration. Any issues that are found will be fixed if possible. If any of the Gentoo testers would like to help out it would be greatly appreciated. Thanks!