Python

It actually works. I tried poetry once and it failed to resolve some simple dependency specification.

Ok you can say it was a fluke bug but it didn't inspire confidence.

uv is also freakishly fast. My venv setup times went from 57 seconds to 7 seconds. I seriously doubt Poetry can do that because it's written in Python.

I abandoned poetry after it was unable to install a specific version of pytorch I was using.

In pip I would do something like pip3 install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu118, but IIRC poetry didn't support the --index-url option.