uv sounds great! For those still using Python v2, how well does it work? pip used to be a pain when having to manage both Python v2 and v3 projects and tools.
Unfortunately, I don't think many things nowadays are tested with a 15-year-old version of a language.
I was one of the last holdouts, preferring to keep 2.7 support if it wasn't too much hassle, but we have to move on at some point. Fifteen years is long enough support.