fix(deps): cudf to cudf-cu12 in pyproject.toml

[camriddell]

cudf changed its naming scheme to include the underlying CUDA version. cudf on pypi only has version 0.6.1.post1 and has not been updated since 2020-01-01.

Description

Attempting to run uv run pytest, uv fails to resolve the dependency for cudf with the below error.

❯ uv run python
  × No solution found when resolving dependencies for split (markers: python_full_version >= '3.10'):
  ╰─▶ Because only cudf==0.6.1.post1 is available and narwhals[cudf] depends on cudf>=24.10.0, we can
      conclude that narwhals[cudf]'s requirements are unsatisfiable.
      And because your project requires narwhals[cudf], we can conclude that your project's
      requirements are unsatisfiable.

Turns out, cudf changed its naming scheme to include the underlying CUDA version. cudf on pypi only has version 0.6.1.post1 and has not been updated since 2020-01-01. https://pypi.org/project/cudf/

What type of PR is this? (check all applicable)

• 💾 Refactor
• ✨ Feature
• 🐛 Bug Fix
• 🔧 Optimization
• 📝 Documentation
• ✅ Test
• 🐳 Other

Checklist

• Code follows style guide (ruff)
• Tests added
• Documented the changes

[dangotbanned]

I mentioned to @FBruzzesi about seeing that the other day

Show screenshot

I'm pretty excited if you've fixed this @camriddell 🥳

[dangotbanned]

Attempting to run uv run pytest, uv fails to resolve the dependency for cudf with the below error.

You have indeed solved that error, but sadly there are more hiding beneath the surface 😢

Command

uv run pytest --no-cache --isolated

Output

  × No solution found when resolving dependencies for split (markers: python_full_version == '3.9.*'):
  ╰─▶ Because the requested Python version (>=3.9) does not satisfy Python>=3.10 and pandas-stubs==2.3.0.250703 depends on Python>=3.10, we can conclude that pandas-stubs==2.3.0.250703 cannot be used.
      And because narwhals:dev depends on pandas-stubs==2.3.0.250703 and your project requires narwhals:dev, we can conclude that your project's requirements are unsatisfiable.

      hint: The `requires-python` value (>=3.9) includes Python versions that are not supported by your dependencies (e.g., pandas-stubs==2.3.0.250703 only supports >=3.10). Consider using a more restrictive `requires-python` value (like >=3.10).

      hint: While the active Python version is 3.13, the resolution failed for other Python versions supported by your project. Consider limiting your project's supported Python versions using `requires-python`.

Extra

I figure that if you're not seeing this too, it would be because I have a uv.toml that looks like this:

# narwhals/uv.toml
[pip]

group = ["local-dev", "typing-ci"]

I'm still dreaming for #3204 which I imagine would solve this 🙏

[camriddell]

@dangotbanned I unfortunately did encounter that second error and came to the same conclusion about 3.9 support :( (which I figured was here to stay, at least for now).

However, after temporarily changing the requires-python version to >=3.10 this seems to have been the last layer of the onion. That said, I agree that #3204 needs to be accepted before we can finally use uv run ... with ease.

[FBruzzesi]

Thanks @camriddell 🙏🏼