My first attempt, and I get "AttributeError: module 'toml.decoder' has no attribute 'TomlPreserveCommentDecoder'"

So careful, far from stable.

I reported it (https://github.com/frostming/pdm/issues/247) because the project is great and I want it to succeed, but I won't put it in prod any time soon. I prefer my package manager to be stable than fancy.

It's also why I don't use poetry and so on in training. There is always some bug that students will encounter later because there are so many config combinations they can encounter, but recent tools have not been as battle tested as we think: the enterprise world is a wild beast.