Earlier quoted context omitted.
The 5-second test: - look at "latest commit." 4 years ago is not good. 2 days ago is good. The 30-second test: - total number of commits. number of active branches. number of PRs. The 5 minute test: - are there PRs? How many open PRs vs how many closed? Is there lively discussion in PRs? - how many different contributors are there? 1 contributor is OK (and often means that the library will be very coherent) but multi…
You forgot issues . Open vs Closed, and meat in the issues. Will tell if people are actually using something.
There's one project that, if I'd known how unhelpful the lead dev would be, I'd have never used that project. (Not going to name names)