Hi, I am working on adding EAPI 7 support for mate ebuilds, but I am currently blocked by missing support in gnome-utils. This is a trivial patch, and although I am not a gnome project member, I am going to submit a patch in the hope it will be merged soon.
there is a PR open,https://github.com/gentoo/gentoo/pull/9059 So I'm going to close the issue.