remove 'tomli' dependency

[jameslamb]

Proposes removing the build-time dependency on tomli for wheels and conda packages.

It doesn't appear to be used anywhere here.

git grep tomli

Notes for Reviewers

I originally noticed something similar in ucx-py (rapidsai/ucx-py#1042), then went searching for similar cases across RAPIDS.

That dependency was added for distributed-ucxx back in #60. I'm not sure why, but I suspect it was related to the use of versioneer in this project at the time. Reference: python-versioneer/python-versioneer#338 (comment)

This project doesn't use versioneer any more (#114). I strongly suspect that the dependency on tomli can be removed.

[wence-]

Hmm, I think you are right, and that the toml parsing that must be required by the build backend just installs tomli in the build env for python < 3.11

[wence-]

Seems probable.

[jameslamb]

Yep, I think so! scikit-build-core will pull in tomli if it needs it: https://github.com/scikit-build/scikit-build-core/blob/f6ed5a28fc85e621b03d984011d17def888ee0db/pyproject.toml#L41

[jakirkham]

/merge

[jakirkham]

Thanks all! 🙏