Temporarily WAR rapidsmpf<->libcudf conda package build cycle

[wence-]

Description

Building the conda package of cudf-polars needs (for the smoketest) the run dependencies, which include rapidsmpf. But rapidsmpf packages need libcudf conda packages so we have a cycle.

Break that by removing the smoketest, and then we can figure out a proper solution.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[coderabbitai]

📝 Walkthrough

Summary by CodeRabbit

• Tests
  • Disabled certain automated verification checks (import, version and sanity checks) in the package build tests.
• Chores
  • Updated development container base images to use the latest CUDA-enabled tags across multiple dev environments.

Note: These changes affect build/development infrastructure only and do not change end-user functionality.

Walkthrough

The cudf-polars conda recipe tests block (import/version checks and a polars sanity script) is commented out. Separately, four .devcontainer/*/devcontainer.json files update their build.args.BASE image tags to rapidsai/devcontainers:latest-...; no other configuration changes are present.

Changes

Conda Recipe Tests Disabled

Layer / File(s)	Summary
Comment out package tests conda/recipes/cudf-polars/recipe.yaml	The tests block that performs cudf_polars import checks, version inspection (including runs with RAPIDS_NO_INITIALIZE and CUDF_NO_INITIALIZE), and a polars sanity script is commented out; about metadata remains unchanged.

Devcontainer Base Image Updates

Layer / File(s)	Summary
Update devcontainer BASE image tags .devcontainer/cuda12.9-conda/devcontainer.json, .devcontainer/cuda12.9-pip/devcontainer.json, .devcontainer/cuda13.2-conda/devcontainer.json, .devcontainer/cuda13.2-pip/devcontainer.json	Each file's build.args.BASE value was changed from a rapidsai/devcontainers:26.08-... tag to the corresponding rapidsai/devcontainers:latest-... tag; other devcontainer settings are unchanged.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Suggested labels

improvement, non-breaking, cudf-polars

Suggested reviewers

• msarahan
• gforsyth
• bdice

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: commenting out cudf-polars tests as a temporary workaround for a conda build dependency cycle between rapidsmpf and libcudf.
Description check	✅ Passed	The description explains the build cycle problem, the temporary solution (removing smoketest), and references finding a proper solution later, which directly relates to the changeset.
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.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

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[coderabbitai]

🧹 Nitpick comments (1)

.devcontainer/cuda13.2-pip/devcontainer.json (1)

8-8: ⚡ Quick win

Pin the BASE image to an immutable reference instead of latest.

Using latest creates a mutable dependency that can cause non-reproducible environments and unexpected breakage when upstream updates. Pin to a concrete version tag (e.g., 26.08-cpp-cuda13.2-ucx1.19.0-openmpi5.0.10) or better yet, include a digest for full immutability.

Suggested change

-      "BASE": "rapidsai/devcontainers:latest-cpp-cuda13.2-ucx1.19.0-openmpi5.0.10"
+      "BASE": "rapidsai/devcontainers:26.08-cpp-cuda13.2-ucx1.19.0-openmpi5.0.10@sha256:<digest>"

🤖 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 @.devcontainer/cuda13.2-pip/devcontainer.json at line 8, The BASE image
reference currently uses the mutable tag
"rapidsai/devcontainers:latest-cpp-cuda13.2-ucx1.19.0-openmpi5.0.10" (the BASE
key in the devcontainer config); replace that value with an immutable concrete
tag or an image digest (for example
"rapidsai/devcontainers:26.08-cpp-cuda13.2-ucx1.19.0-openmpi5.0.10" or
"rapidsai/devcontainers@sha256:<digest>") so the BASE entry points to a fixed,
reproducible image; update the BASE string accordingly and commit the change.

🤖 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 @.devcontainer/cuda13.2-pip/devcontainer.json:
- Line 8: The BASE image reference currently uses the mutable tag
"rapidsai/devcontainers:latest-cpp-cuda13.2-ucx1.19.0-openmpi5.0.10" (the BASE
key in the devcontainer config); replace that value with an immutable concrete
tag or an image digest (for example
"rapidsai/devcontainers:26.08-cpp-cuda13.2-ucx1.19.0-openmpi5.0.10" or
"rapidsai/devcontainers@sha256:<digest>") so the BASE entry points to a fixed,
reproducible image; update the BASE string accordingly and commit the change.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: f1ead91c-560d-4552-82d4-cd2024764af0

📥 Commits

Reviewing files that changed from the base of the PR and between 378171f and c941b2f.

📒 Files selected for processing (4)

• .devcontainer/cuda12.9-conda/devcontainer.json
• .devcontainer/cuda12.9-pip/devcontainer.json
• .devcontainer/cuda13.2-conda/devcontainer.json
• .devcontainer/cuda13.2-pip/devcontainer.json

✅ Files skipped from review due to trivial changes (3)

• .devcontainer/cuda12.9-pip/devcontainer.json
• .devcontainer/cuda12.9-conda/devcontainer.json
• .devcontainer/cuda13.2-conda/devcontainer.json

[gforsyth]

Approving -- I'm not completely certain that the cudf-polars package will build, even with the smoketest disabled, so I'll wait until that part of CI completes to confirm, then I can admin-merge this (and skip the test suite)

[wence-]

Backed out the devcontainer change because it turns out that one was wrong...

[wence-]

Approving -- I'm not completely certain that the cudf-polars package will build, even with the smoketest disabled, so I'll wait until that part of CI completes to confirm, then I can admin-merge this (and skip the test suite)

The run on main did successfully build the package (because, after all, it's just tarring up some python files): https://github.com/rapidsai/cudf/actions/runs/25888552706/job/76174994010#step:11:1332

[gforsyth]

admin merging this