Use cuda-pathfinder in `build-system.requires`#1817

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rwgk wants to merge 12 commits intoNVIDIA:mainfrom

rwgk:pathfinder_in_build-system_requires

Commits on Mar 31, 2026

Merge branch 'main' into pathfinder_in_build-system_requires
rwgk
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build: narrow except to only catch cuda.pathfinder-not-found
rwgk
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build: use importlib.metadata to locate cuda-pathfinder instead of scanning sys.path
rwgk
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build: produce actionable error when cuda namespace is entirely absent
rwgk
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build: diagnostic for importlib.metadata locate_file in PEP 517 builds
rwgk
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Revert "build: diagnostic for importlib.metadata locate_file in PEP 517 builds"
rwgk
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build: revert to sys.path scan, importlib.metadata finds wrong dist-info
rwgk
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