Revert "Temporarily WAR rapidsmpf<->libcudf conda package build cycle (#22520)"

[gforsyth]

Reverts #22520 which temporarily disabled the import smoketest for the cudf-polars package so we could get around the circular dependency with rapidsmpf. Leaving this as a draft for now -- can be merged in after there are rapidsmpf conda packages for 26.08

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ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 7a1bb07 and 5d780c9.

📒 Files selected for processing (1)

• conda/recipes/cudf-polars/recipe.yaml

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📝 Walkthrough

Summary by CodeRabbit

• Tests
  • Activated package validation tests in the conda recipe to ensure proper installation and functionality, including version verification and compatibility checks with the Polars library.

Walkthrough

The conda recipe for cudf-polars re-enables its tests section with package import validation, version checks under different initialization-disabling environment variables, and basic runtime smoke tests combining cudf_polars and polars functionality.

Changes

Conda Recipe Tests

Layer / File(s)	Summary
cudf-polars test configuration conda/recipes/cudf-polars/recipe.yaml	Conda recipe tests block is re-enabled with cudf_polars import check, version verification under initialization-disabling environment variables (RAPIDS_NO_INITIALIZE and CUDF_NO_INITIALIZE), and a smoke test that imports cudf_polars and uses polars to create a simple pl.Series.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• rapidsai/cudf#22520: Disables the same tests section in the conda recipe for cudf-polars to address a build cycle; this PR re-activates those tests.

Suggested reviewers

• jameslamb

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: reverting a temporary workaround for a conda package build cycle issue, which aligns with re-enabling the tests in the recipe file.
Description check	✅ Passed	The description directly relates to the changeset by explaining the revert of PR #22520 and the restoration of the import smoketest, matching the changes shown in the raw summary.
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.

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[vyasr]

Closing now that we've removed the circular dependency altogether.