Single-source-of-truth for dependencies #638
Description
cf-units' dependencies are recorded in multiple places. With the introduction of Pixi (#636), this is isolated to pyproject.toml (Pixi manages the requirements/ directory via ci-locks), but there are still two places in there:
- Setuptools info
- Pixi info
We should make sure these can't diverge. The simplest way would be a script in test_coding_standards.py.