The library bit is the real killer here. There are a fair amount of libraries out there, but they don't live in a terribly centralized location. I think asdf is

The library bit is the real killer here. There are a fair amount of libraries out there, but they don't live in a terribly centralized location. I think asdf is the "central" repos, but it seems like most of the useful items there have been created by a small handful of users.