>>672
それ正解っぽい。

https://www.reddit.com/r/emacs/comments/mh5l9y/comment/gswudoa/
Emacs doesn't talk Wayland natively so you'll need to use XWayland. Since gentoo is pretty much "build my own operating system" you'll probably have to find out for yourself how to ensure that XWayland is running under your particular compositor and system.