BLD/DEV/CI: better Pixi setup

[lucascolley]

@hameerabbasi are you open to taking on changes in this vein to move to pixi-build and make environments conda-forge-based? I would like to use sparse from source with SciPy if I go ahead with the coo_array support, and this will make that a lot easier.

[codspeed-hq]

CodSpeed Performance Report

Merging this PR will not alter performance

_{Comparing lucascolley:pixi (b98cdff) with main (5e5f0fd)}

Summary

✅ 340 untouched benchmarks

[lucascolley]

is this a known issue @hameerabbasi ?

  /home/runner/work/sparse/sparse/.pixi/envs/finch/lib/python3.13/site-packages/finch/tensor.py:9: DeprecationWarning: numpy.core.numeric is deprecated and has been renamed to numpy._core.numeric. The numpy._core namespace contains private NumPy internals and its use is discouraged, as NumPy internals can change without warning in any release. In practice, most real-world usage of numpy.core is to access functionality in the public NumPy API. If that is the case, use the public NumPy API. If not, you are using NumPy internals. If you would still like to access an internal attribute, use numpy._core.numeric.normalize_axis_tuple.

[hameerabbasi]

I forgot to hit the submit button on the review. 😅

[hameerabbasi]

is this a known issue @hameerabbasi ?

/home/runner/work/sparse/sparse/.pixi/envs/finch/lib/python3.13/site-packages/finch/tensor.py:9: DeprecationWarning: numpy.core.numeric is deprecated and has been renamed to numpy._core.numeric. The numpy._core namespace contains private NumPy internals and its use is discouraged, as NumPy internals can change without warning in any release. In practice, most real-world usage of numpy.core is to access functionality in the public NumPy API. If that is the case, use the public NumPy API. If not, you are using NumPy internals. If you would still like to access an internal attribute, use numpy._core.numeric.normalize_axis_tuple.

It shouldn't be causing a hard failure; should it? It's been known for a while.

[lucascolley]

if this looks good I can proceed with converting the rest of CI

[hameerabbasi]

Looks good. Would you like to do it in this PR or another one?

[lucascolley]

would be great if we can merge this already I suppose!

[hameerabbasi]

Thanks! I'll need to edit the list of required jobs for the upcoming PRs.

[lucascolley]

thanks Hameer :)