Ceil cuDSS to >=0.7,<0.8

[ramakrishnap-nv]

cudss 0.8 had some speed-up regressions, so switching back to 0.7

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📥 Commits

Reviewing files that changed from the base of the PR and between 623d82e and dd4ca57.

📒 Files selected for processing (1)

• conda/recipes/libcuopt/recipe.yaml

🚧 Files skipped from review as they are similar to previous changes (1)

• conda/recipes/libcuopt/recipe.yaml

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📝 Walkthrough

Walkthrough

This PR lowers cuDSS version bounds from 0.8.x to 0.7.x across dependency manifests, conda environments and recipes, CMake discovery, CI install script, and Python packaging metadata.

Changes

cuDSS Version Downgrade

Layer / File(s)	Summary
Central dependency specification dependencies.yaml	Central dependency manifest pins libcudss-dev to >=0.7,<0.8 and adjusts nvidia-cudss-cu12/nvidia-cudss-cu13 wheel requirements to >=0.7,<0.8.
Conda environments and libcuopt recipe conda/environments/all_cuda-*_arch-*.yaml, conda/recipes/libcuopt/recipe.yaml	Four conda environment files and multiple host/run entries in the libcuopt recipe updated to depend on libcudss-dev >=0.7,<0.8 (and libcudss >=0.7,<0.8 for run).
CMake build system integration cpp/cmake/thirdparty/FindCUDSS.cmake	Fallback find_package(cudss ...) requirement lowered to request cudss >= 0.7 instead of >= 0.8.
CI and system installation ci/utils/install_cudss.sh	Installation script now pins dnf package globs and apt libcudss-devel constraint to 0.7.* instead of 0.8.*.
Python project dependencies python/libcuopt/pyproject.toml	Project dependency nvidia-cudss-cu13 changed to >=0.7,<0.8.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• NVIDIA/cuopt#1367: Modifies the same cuDSS version-pinning points but with opposite version bounds (0.8.x vs 0.7.x).
• NVIDIA/cuopt#1365: Changes the same cuDSS pin locations across conda, CI script, and CMake with different target version.
• NVIDIA/cuopt#1360: Overlaps on ci/utils/install_cudss.sh and related install pinning for the 0.7.* series.

Suggested reviewers

• bdice
• msarahan
• tmckayus

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the primary change: pinning cuDSS version bounds to >=0.7,<0.8 across all build and runtime dependency specifications.
Description check	✅ Passed	The description is directly related to the changeset, explaining the reason for the version constraint change (reverting 0.8 due to speed-up regressions).
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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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/cudss-pin-0.7

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[ramakrishnap-nv]

/merge