add setuptools to host requirements for conda packages that need it

[jameslamb]

@caryr35 pointed out to me this morning that cugraph's nightly CI is failing. All conda-python-build jobs are failing like this, when building nx-cugraph

ModuleNotFoundError: No module named 'setuptools'
...
ValueError: Could not import build backend specified in pyproject.toml's tool.rapids-build-backend table. Make sure you specified the right optional dependency in your build-system.requires entry for rapids-build-backend.

(build link)

suspected root cause: nx-cugraph uses setuptools.build_meta, but setuptools isn't present in the conda build environment

Notes for Reviewers

Why is this targeting branch-24.08?

Looks like CI is failing there too: https://github.com/rapidsai/cugraph/actions/runs/10183681336/job/28171285190

Why is this just breaking now?

I suspect that prior to this we were getting setuptools because it was a transitive dependency of one of nx-cugraph's other build/host dependencies.

How could we prevent stuff like this in the future?

We could add support for updating conda recipe files in rapids-dependency-file-generator (rapidsai/dependency-file-generator#7).

setuptools was correctly added as a build dependency in pyproject.toml files here (automatically, via dependencies.yaml + rapids-dependency-file-generator), but the conda recipe meta.yaml files were missed.

[alexbarghi-nv]

It looks like cugraph-pyg has not been updated

[jameslamb]

It looks like cugraph-pyg has not been updated

Ah! Thanks, updated in 6774dcd. I'd missed that one because I saw scikit-build-core in its conda recipe. Looks like that was incorrect, it really does use setuptools:

cugraph/python/cugraph-pyg/pyproject.toml

Line 68 in b38e010

build-backend = "setuptools.build_meta"

[alexbarghi-nv]

👍

[rlratzel]

Thanks for doing this, @jameslamb !

[jameslamb]

/merge