Switch to rattler-build

[pavelzw]

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

This will hopefully increase the iteration speed debugging the failing version updates since we don't need to wait ages for conda-build anymore

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I wanted to let you know that I linted all conda-recipes in your PR (recipe/recipe.yaml) and found some lint.

Here's what I've got...

For recipe/recipe.yaml:

• ❌ Recipe name has invalid characters. only lowercase alpha, numeric, underscores, hyphens and dots allowed

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/12949477992. Examine the logs at this URL for more detail.}

[pavelzw]

❌ Recipe name has invalid characters. only lowercase alpha, numeric, underscores, hyphens and dots allowed

xref conda-forge/conda-smithy#2224

[xhochy]

You should not add this. We doing an MSVC based build and MinGW is a whole different toolchain

[ytausch]

I checked the recipe for compatibility with the autotick-bot.

Updating the recipe after my suggested changes here should work, missing unit tests to the bot were contributed here: regro/cf-scripts#3605

[ytausch]

The autotick-bot cannot read variant variables here.

Suggested change

	url: https://pypi.org/packages/source/p/polars/${{ polars_variant | replace('-', '_') }}-${{ version }}.tar.gz
	url: https://pypi.org/packages/source/p/polars/polars-${{ version }}.tar.gz

[ytausch]

the pathway for adding support for your original proposal is here: prefix-dev/rattler-build-conda-compat#66

[ytausch]

Suggested change

	url: https://pypi.org/packages/source/p/${{ polars_variant }}/${{ polars_variant | replace('-', '_') }}-${{ version }}.tar.gz
	url: https://pypi.org/packages/source/p/polars-lts-cpu/polars_lts_cpu-${{ version }}.tar.gz

see above

[ytausch]

Suggested change

	url: https://pypi.org/packages/source/p/${{ polars_variant }}/${{ polars_variant | replace('-', '_') }}-${{ version }}.tar.gz
	url: https://pypi.org/packages/source/p/polars-u64-idx/polars_u64_idx-${{ version }}.tar.gz

see above

[pavelzw]

xref conda-forge/conda-smithy#2226

[xhochy]

I would like to trim down the build matrix to a single Python version here but sadly conda-smithy rerender doesn't work. I can see some differences locally but would like to verify that they pop up in CI, too, before I dive in too deep.

[xhochy]

@pavelzw Were you able to reproduce this locally? For me, even the osx-64 -> osx-arm64 builds pass on my Intel Mac.