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Add Python 3.15 wheels, including the free-threaded build, and keep Python 3.10. NVIDIA#3080 on main adds 3.15 and also drops 3.10, so this commit takes only its 3.15 parts plus the matching 13.4.4 changes. - Cherry-pick NVIDIA#2898 (f9de579): cibuildwheel v4.1.1 -> v4.2.1 and drop CIBW_ENABLE=cpython-prerelease. v4.1.1 predates CPython 3.15.0rc1; v4.2.1 builds against 3.15.0rc2, which is ABI-compatible with 3.15.0. - Port the workflow part of NVIDIA#3096 (13.4.4): release the 3.15 wheels and remove the 3.15 allow-prereleases and continue-on-error guards, including the Linux one. - Test 3.15 and 3.15t on CUDA 13.4.2 against published cuda-bindings 13.4.4, the first release with cp315 wheels. - Add the Python 3.15 classifier and the 1.2.2 release notes, and list Python 3.10 - 3.15 on the install and support pages. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
mdboom
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Oct 14, 2026
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| build. On Python 3.15, ``cuda.core`` requires ``cuda.bindings`` 13.4.4 or | ||
| newer, the first release with Python 3.15 wheels, so Python 3.15 is |
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I guess we should make a cuda_bindings 12.9.10 release as well...?
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See this preparation for the 12.9.10 release: #3112
Cherry-pick NVIDIA#2896 (7c4691b, cupti64_2026.3.1.dll) and NVIDIA#2982 (48f55a3, cusparseLt_13.dll). Current CUPTI and cuSPARSELt wheels ship these names, and the Windows pathfinder all_must_work tests fail without them. 13.4.x carries the same fixes. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Summary
Patch release of cuda.core 1.2.1 that adds Python 3.15 wheels, including the free-threaded build. Python 3.10 stays supported, so #3080 (which also drops 3.10) cannot be cherry-picked; this PR takes only its 3.15 parts plus the matching 13.4.4 release changes. The cuda-python 13.4.4 metapackage ships 3.15 support and pins
cuda-core~=1.2.0, sopip install cuda-pythonon Python 3.15 needs a 1.2.x release with cp315 wheels. PyPI rejects new files for a release after 14 days, so the wheels cannot be added to 1.2.1. Part of #2163.Changes:
CIBW_ENABLE: cpython-prerelease. v4.1.1 predates CPython 3.15.0rc1, so the cp315 wheels this branch built for 1.2.1 used a beta interpreter with no ABI guarantee. v4.2.1 builds 3.15 by default against 3.15.0rc2, which is ABI-compatible with the final release. The one conflict was the cibuildwheel pin.ci/tools/download-wheelsno longer skips Python 3.15 artifacts, and theallow-prereleasesand Windowscontinue-on-errorguards for 3.15 go away. The Linuxcontinue-on-errorguard goes too, so 3.15 test failures fail CI.ci/test-matrix.yml: add Python 3.15 test jobs (linux-64 3.15 and 3.15t, win-64 3.15) on CUDA 13.4.2. Like every other job on this branch, they test against published cuda-bindings, here 13.4.4, the only release with cp315 wheels and the one users get on Python 3.15. A 13.4 test version matches the build version, soenv-varswould pick the bindings built in this run; each 3.15 row setsBINDINGS_SOURCE=publishedand the two skip flags through itsENVmap, the same valuesenv-varssets for published bindings. The cuda.bindings tests for 3.15 and 3.15t ran in the 13.4.4 release CI.cuda_core/pyproject.toml: add the Python 3.15 classifier.requires-pythonstays>=3.10.Release plan
Merge here, tag
cuda-core-v1.2.2on the merge commit, wait for the tag-triggered CI run, run the release workflow in dry-run mode, then release. A follow-up PR tomainadds 1.2.2 to the docs version switcher, the 1.2.2 release notes, and the Python 3.15 classifier.🤖 Generated with Claude Code