Enable Ruff's NumPy rules

[jakirkham]

Ruff ships with a few NumPy checks. It may be worth considering adding these to the Ruff checks that we include in RAPIDS projects

Note: NPY201 specifically checks for NumPy 2 support. Though there are other checks, which may be worth including too

[vyasr]

Most RAPIDS repos don't use ruff at all yet, so getting that set up would be a good first step (presumably replacing flake8).

[jakirkham]

Interesting saw things like...

• Mark cudf._typing as a typing module in ruff cudf#16318

So assumed we were already using this somehow

If not, agree that setting up Ruff would be the first step

[vyasr]

cudf is the only repository using ruff so far AFAIK.

[jakirkham]

Am seeing additions via PRs to projects:

• Update linters: remove flake8, add ruff, update cython-lint rmm#1302
• Replace setup.py with pyproject toml cucim#617
• Add new cugraph-nx package (networkx backend using pylibcugraph) cugraph#3614
• Replace flake8 with ruff & cython-lint ucxx#168

Plus other PRs for various tooling:

• chore(doc): Add Sphinx build dependency-file-generator#77
• Add ruff to the repo linters deployment#113
• update pre-commit hook versions, use new ruff config format rapids-dask-dependency#59

That said, am not aware of a coordinated effort to make this change. Just different projects have made this change themselves

[vyasr]

Oh cool! Then we've come further with that than I thought. I'd say a coordinated migration to ruff from flake8 at least is warranted.

[jameslamb]

+1 to that. @bdice also rightly pointed out in #101 (comment) that if projects were all using ruff instead of flake8, the effort to fix something like #101 would have been lower because ruff can auto-fix so many of the issues it raises.

[jakirkham]

FWIW am personally encouraged by the fact that projects are adopting Ruff on their own and making this transition

Perhaps we could provide some guidelines if they would be helpful. This probably works best if we pick one RAPIDS project and concentrate effort on bringing its Ruff configuration up-to-date and then point to that as an example for others

That said, am happy to see projects continue to make these changes themselves. Though it might be worth raising awareness of this (say at the PIC meeting) and see if more projects will sign up to make these changes