I’ve been quite happy with Hatch, which I adopted about 3 months ago on the strength of the PyPA’s recommendation. I sort of like where they’re coming from philosophically - sticking as close as possible to standards - and find the API pretty nice. I’ve never used Poetry so couldn’t compare.

One concern I have is that it seems to largely be the work of a solo dev who also has other commitments. Absolutely nothing wrong with that in principle, of course, but I wonder how sustainable it is. I have just noticed that PyPA owns the repo - not sure if that was always the case or if it’s a recent development, but does bode well.