switch from 'cuda-python' to specific components (e.g. 'cuda-bindings')

[jameslamb]

Description

Contributes to rapidsai/build-planning#285

cuda-python is a metapackage and sometimes pulls in components that RAPIDS libraries don't need. This PR is part of a series dropping direct use of cuda-python in favor of depending only on those specific components.

• drops dependency on cuda-python
• adds explicit dependencies on components:
  • cuda-bindings >=12.9.2,<13.0 (CUDA 12), cuda-bindings >=13.0.1,<14.0 (CUDA 13)
• adds explicit testing of oldest cuda-bindings in CI

Notes for Reviewers

Why these specific bounds?

• these roughly match what we were getting with cuda-python
• worked through finding compatible ranges in switch from 'cuda-python' to specific components (e.g. 'cuda-bindings') rmm#2460 (comment)
• cuda-bindings major version follows the CTK major version, so kept a ceiling just like we currently have for cuda-python

This PR has dependencies

• switch from 'cuda-python' to specific components (e.g. 'cuda-bindings') cudf#23091
• switch from 'cuda-python' to specific components (e.g. 'cuda-bindings') NVIDIA/raft#3068
• switch from 'cuda-python' to specific components (e.g. 'cuda-bindings') rmm#2460

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[jameslamb]

/ok to test

[coderabbitai]

📝 Walkthrough

Walkthrough

This PR replaces the cuda-python dependency with cuda-bindings across the codebase, keeping identical version bounds. Changes span generated conda environment YAML files, the cuml conda recipe, dependencies.yaml selector logic and test matrices, and pyproject.toml dependency lists.

Changes

cuda-python to cuda-bindings migration

Layer / File(s)	Summary
Central dependency selector and test matrices dependencies.yaml	depends_on_cuda_python selector switches package name to cuda-bindings for CUDA 12 and 13/fallback cases; new "oldest" test matrices pin cuda-bindings versions for CUDA 12 and 13.
Conda recipe requirement blocks conda/recipes/cuml/recipe.yaml	Two conditional dependency blocks switch from cuda-python to cuda-bindings, preserving version bounds for cuda_major == "12" and the else branch.
Generated conda environment files conda/environments/all_cuda-129_arch-aarch64.yaml, conda/environments/all_cuda-129_arch-x86_64.yaml, conda/environments/all_cuda-133_arch-aarch64.yaml, conda/environments/all_cuda-133_arch-x86_64.yaml	CUDA 12.9 and 13.3 environment files for aarch64/x86_64 replace cuda-python entries with equivalent cuda-bindings version constraints.
Python package build/runtime dependencies python/cuml/pyproject.toml	Main dependencies list and tool.rapids-build-backend.requires replace cuda-python>=13.0.1,<14.0 with cuda-bindings>=13.0.1,<14.0.

Estimated code review effort: 2 (Simple) | ~10 minutes

Suggested labels: CUDA/C++, ci

Suggested reviewers: jcrist, bdice, jakirkham

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly reflects the main change: replacing cuda-python with specific CUDA components like cuda-bindings.
Description check	✅ Passed	The description is directly related to the changeset and accurately summarizes the dependency switch and added CI coverage.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

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[coderabbitai]

🧹 Nitpick comments (1)

dependencies.yaml (1)

745-756: 📐 Maintainability & Code Quality | 🔵 Trivial | 💤 Low value

Rename the selector to match cuda-bindings
If this block now installs cuda-bindings, depends_on_cuda_python is misleading. Rename it to depends_on_cuda_bindings and update the includes: references in this file.

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@dependencies.yaml` around lines 745 - 756, The selector name in the
cuda-python dependency block no longer matches the package it installs. Rename
depends_on_cuda_python to depends_on_cuda_bindings in the dependency definition,
and update every includes reference in this file that points to the old selector
so they resolve to the new name. Keep the matrix/package entries in that block
unchanged.

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Nitpick comments:
In `@dependencies.yaml`:
- Around line 745-756: The selector name in the cuda-python dependency block no
longer matches the package it installs. Rename depends_on_cuda_python to
depends_on_cuda_bindings in the dependency definition, and update every includes
reference in this file that points to the old selector so they resolve to the
new name. Keep the matrix/package entries in that block unchanged.

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: 94a29e83-6641-4139-944f-5af68bd56602

📥 Commits

Reviewing files that changed from the base of the PR and between 8d76894 and c2bd8af.

📒 Files selected for processing (7)

• conda/environments/all_cuda-129_arch-aarch64.yaml
• conda/environments/all_cuda-129_arch-x86_64.yaml
• conda/environments/all_cuda-133_arch-aarch64.yaml
• conda/environments/all_cuda-133_arch-x86_64.yaml
• conda/recipes/cuml/recipe.yaml
• dependencies.yaml
• python/cuml/pyproject.toml

[jakirkham]

Thanks James! 🙏

[jameslamb]

/merge