In my experience "manual install for something not in the repo" applies to a whole lot of software, especially if "latest version isn't in the repo" counts, and

In my experience "manual install for something not in the repo" applies to a whole lot of software, especially if "latest version isn't in the repo" counts, and also usually means "compile it from source yourself". Frankly I think that's a pretty ridiculous ask, and the fact that Linux Desktop hasn't had a good story for installing software outside of the repo has been one of the main factors keeping me from liking it over the past 2 decades. There have been a lot of 'universal package' standards over the years, and honestly Flatpak isn't the best one, but it is the one that the community finally seems willing to adopt to a degree that actually makes it worthwhile. Snap, however, is the worst of these formats, and by a wide margin, that I can recall ever existing. It's amazingly bad and extremely user-hostile.