In https://github.com/gentoo/gentoo/pull/34472 I'd like to add 61 packages under a new dev-gap category. GAP has its own package ecosystem,
https://www.gap-system.org/Packages/packages.html and a reasonably standard build/install process. Since most GAP packages are written in its own GAP language, I think dev-gap is appropriate. Feel free to take an advance peek at the new eclass as well if you don't mind doing it on Github.
