The usual deal: USE="vala" is optional for some packages, others like gamehub just have the dependency without the explicit USE. Without the required USE `dev-libs/libmanette` will build without the proper support and build of gamehub will subsequently fail. The fix is simple, but didn't know where else to send it. Reproducible: Always
Created attachment 914137 [details, diff] Just a diff
You can request access to the repository and push to the dev branch. https://wiki.gentoo.org/wiki/Project:GURU