Relicense CUDA Bindings and CUDA Python under Apache 2.0 by kkraus14 · Pull Request #2293 · NVIDIA/cuda-python

kkraus14 · 2026-07-02T06:32:46Z

What

relicense cuda-bindings and the cuda-python metapackage under Apache 2.0
make the root LICENSE canonical and package Apache 2.0 license copies in all independently built distributions while preserving package-specific copyright spans
set License-Expression metadata and package the canonical license in wheels and sdists
convert generated and maintained source headers without functional generated-code changes
remove the remaining proprietary EULA text and enable cuda-bindings contributions through the DCO workflow

Dependency

This draft is based on the post-PR-2285 main branch and is blocked on the internal cybind MR.

Validation

clean modern and legacy generation for CTK 13.3 and 12.9 emitted Apache-2.0 for all 68 CUDA outputs while preserving the proprietary default for unrelated outputs
cuda-python and cuda-bindings wheels and sdists report License-Expression: Apache-2.0 and License-File: LICENSE with exact canonical license bytes
local/path-based cuda-bindings lockfile entries report Apache-2.0 while historical released-package entries retain their original metadata
CUDA 13.3 bindings wheel built successfully
378 bindings tests passed with 64 expected skips
9 Cython interoperability tests passed
bindings documentation built successfully
all repository pre-commit hooks passed

Signed-off-by: Keith Kraus <keith.j.kraus@gmail.com>

copy-pr-bot · 2026-07-02T06:32:49Z

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Signed-off-by: Keith Kraus <keith.j.kraus@gmail.com>

kkraus14 · 2026-07-02T14:25:23Z

/ok to test

mdboom

We should update the latest copyright year on any file we've relicensed. The copyright year checker missed some -- possibly because you didn't have the changes statged when it ran (see #2293 and #2273).

Also I think the start copyright year for cuda-pathfinder was updated inadvertently.

rwgk · 2026-07-02T17:11:41Z

codex found this:

Tracked lockfiles still contain old cuda-bindings license metadata, e.g. cuda_bindings/pixi.lock:3035 and cuda_core/pixi.lock:4497. They are excluded from SPDX checks and partly describe old solved/released packages, but they will still show up in repo-wide old-license searches.

Signed-off-by: Keith Kraus <keith.j.kraus@gmail.com>

rwgk · 2026-07-02T17:54:42Z

Tracked lockfiles still contain old cuda-bindings license metadata

I raised issue #2298 after seeing this.

Not sure if we want to do anything about it, but I thought it's useful to document clearly what we have at the moment.

rwgk · 2026-07-02T17:55:51Z

@kkraus14 this branch is out-of-date with main. Do you want to re-trigger the CI with main merged?

kkraus14 · 2026-07-02T18:55:15Z

@kkraus14 this branch is out-of-date with main. Do you want to re-trigger the CI with main merged?

Does it matter? I think the only non-comment changes are related to some packaging flows with regards to metadata. I don't think we'd gain any more signal vs the green CI we already have?

rwgk · 2026-07-02T19:06:10Z

Does it matter?

I wasn't sure. When I posted the comment, the CI had just triggered, i.e. it was just the right moment to update; but I didn't want to click the Update branch button without asking.

I agree it's fine to merge without updating now that the CI is finished already.

One small worry: is @mdboom's cybind MR 453 complete and ready for merging as well? — When I ran codex a couple hours ago, it reported that the cython-gen (aka legacy) updates still only came from 452.

rwgk · 2026-07-02T19:24:08Z

I just noticed, this PR updates the license in all release notes, e.g. cuda_bindings/docs/source/release/11.4.0-notes.rst. Is that intentional? — I guess we're just relicensing the release notes themselves, so should be OK? Might be worth calling out in the PR description.

In the meantime codex told me that MR 453 also takes care of the cython-gen / legacy changes, but it also found an potential issue that I'll report on the MR.

rwgk

To be sure there is no drift, please don't merge before:

cybind MR 454 was merged.
The new cybind main was run against this PR.

rwgk

@kkraus14 I merged main and ran cybind from it's latest main.

The new commits are:

3a641e5 — cybind cython-gen
86561aa — cybind native

Assuming the CI passes again, this LGTM. (Local testing under Linux passed.)

rwgk · 2026-07-03T01:26:48Z

I ran a local SPDX copyright-year audit over the tracked files, comparing the newest year in each NVIDIA SPDX-FileCopyrightText header against the latest Git author year for that file.

The full audit currently reports 53 mismatch files in the repository. I then intersected those mismatch files with the files changed by this PR, using PR head 86561aa against refreshed NVIDIA/main at 45c8b24.

Result: PR 2293 changes 260 files, and none of them overlap with the 53 copyright-year mismatch files.

(I backed up my script as spdx_copyright_year_full_audit_2026-07-02+173916.sh. Maybe I'll add it with another PR later.)

mdboom

LGTM

github-actions · 2026-07-07T00:40:54Z

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Resolves conflicts caused by concurrent changes on main: - Relicense (#2293) updated SPDX headers on cuda_bindings/examples/*.py and cuda_bindings/cuda/bindings/_example_helpers/*. All of those files were removed on this branch, so main's edits are discarded via git rm. - Bindings-side test_examples.py, cuda_core/examples/pytorch_example.py and cuda_core/tests/example_tests/test_basic_examples.py were removed on this branch; main's edits to them are discarded. - scripts/run_tests.sh was removed on main (#2271); accept the deletion. - ci/tools/run-tests: keep this branch's optional sample-deps install (nvtx, pillow) but pick up main's rename CUDA_VER_MINOR -> TEST_CUDA_MAJOR_MINOR. - Four new texture / GL-interop examples added to cuda_core/examples/ on main (gl_interop_fluid.py, gl_interop_fluid_numba_cuda_mlir.py, gl_interop_mipmap_lod.py, texture_sample.py) are migrated into their own directories under samples/ with README.md and requirements.txt. Added a DISPLAY guard to glInteropFluid and glInteropMipmapLod so they waive with exit code 2 on headless runners, matching glInteropPlasma. - ruff.toml: ignore RUF059 under samples/** (matches the pre-existing ignore for examples/**). - .spdx-ignore: drop the obsolete cuda_bindings/examples/* line. Verified end-to-end: - pixi install -e samples: solves cleanly. - pytest cuda_core/tests/example_tests/test_samples.py: 46 passed, 9 skipped (all legitimate: no DISPLAY, no P2P, sub-Hopper GPU, or intentionally omitted deps), 0 failed. 55 samples collected. - ruff check + format: clean. - toolshed/check_spdx.py: clean on edited files.

Relicense CUDA Bindings and CUDA Python
46827f0
Signed-off-by: Keith Kraus <keith.j.kraus@gmail.com>

kkraus14 added this to the cuda.bindings 13.4.0 & 12.9.8 milestone Jul 2, 2026

kkraus14 added packaging Anything related to wheels or Conda packages cuda.bindings Everything related to the cuda.bindings module labels Jul 2, 2026

github-actionsBot added the cuda.pathfinder Everything related to the cuda.pathfinder module label Jul 2, 2026

kkraus14 mentioned this pull request Jul 2, 2026
[12.9.x] Relicense CUDA Bindings and CUDA Python under Apache 2.0 #2294
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kkraus14 commented Jul 2, 2026
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Comment threadtoolshed/sync_licenses.py Outdated
Comment threadtoolshed/check_spdx.py Outdated

Address relicensing review feedback
5b0c0ee
Signed-off-by: Keith Kraus <keith.j.kraus@gmail.com>

kkraus14 marked this pull request as ready for review July 2, 2026 14:25

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kkraus14 self-assigned this Jul 2, 2026

rwgk mentioned this pull request Jul 2, 2026
[no-ci] CI: remove restricted paths guard #2297
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mdboom requested changes Jul 2, 2026
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Comment threadcuda_bindings/examples/0_Introduction/clock_nvrtc.py
Comment threadcuda_pathfinder/LICENSE Outdated

Address copyright and lockfile review feedback
8836421
Signed-off-by: Keith Kraus <keith.j.kraus@gmail.com>

github-actionsBot added the cuda.core Everything related to the cuda.core module label Jul 2, 2026

rwgk requested changes Jul 2, 2026
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rwgk added 3 commits July 2, 2026 16:51

Merge branch 'main' into NVIDIA→codex/relicense-bindings-python
78630c4

run_cybind_cython_gen 13.3.0 ../cuda-python
3a641e5

run_cybind_native 13.3.0 ../cuda-python
86561aa

rwgk approved these changes Jul 3, 2026
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kkraus14 commented Jul 3, 2026
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Comment threadcuda_bindings/cuda/bindings/_internal/driver.pxd

run_cybind_native 13.3.0 ../cuda-python
c076717

rwgk added the PR review get-together Mark PRs you'd like the team to review at the weekly PR review get-together. label Jul 6, 2026

mdboom approved these changes Jul 6, 2026
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kkraus14 merged commit 18f9bb5 into mainJul 6, 2026
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kkraus14 deleted the codex/relicense-bindings-python branch July 6, 2026 19:24

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rwgk mentioned this pull request Jul 21, 2026
[no-ci] CI: add dedicated merge gate for restricted-paths review #1896
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