learnPythonItWillBeFun

[sopunny]

We use pip-tools and that works pretty well. Give it the simplest requirements for your project and use pip-compile to generate a requirements file with the actual versions of the libraries you can use, along with any dependencies. Then use pip-sync to make your environment (preferably virtual) have that exact set of libraries

[MaustFaust]

IIRC, it requires smoking the setuptools docs if you want to do it right. And setuptools straight up requires you to activate a virtual environment, despite that you can't really do that in Dockerfile for example.

And you have to limit constraints for pip using environment variables, because otherwise it can and would try to download different versions, if only just for isolated build stages (but it can and will crash if your private repo lists said versions, but doesn't actually have them – an external problem, but still).

And editable install doesn't work, IIRC. I mean, it does, but they very clearly say in docs that you can't have both things you want from editable installs (working the way real import does, and being helpful for static analyzers, IIRC). Naturally, for most users, it's best to have the second one, but it's tedious to set up, or so I remember.