A while ago I read a guide on how to make games for Linux. Multiplatform from the start, which tools to use, what to target, common pitfalls, that kind of thing. I recall that they hosted it on a source code repository (github/gitlab/something) so that people could make changes as a pull request. I really don't remember how I stumbled across it the first time.

I'd like to pass it on to someone that's going to be making a Linux game, but for the life of me I can't find it again. Does it ring any bells with anyone?