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Add Python 3.15 to the build/test matrix (12.9.x backport) #2133

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a79f6c6
Add Python 3.15 to the build/test matrix
leofang May 22, 2026
2598994
Drop cpython-freethreading from CIBW_ENABLE (default in v4.0)
leofang May 22, 2026
d64eefd
Drop 3.13t from matrix; fix GNU link.exe on Windows
leofang May 22, 2026
38ec741
Expand test matrix: arm64 3.15, Windows 3.10-3.15
leofang May 22, 2026
8a2c9c3
Windows test matrix: dual LOCAL_CTK for 3.10/3.11, use 12.9.1 for 3.13
leofang May 22, 2026
a7692b4
Pre-build numpy wheel for Python 3.15 (no pre-built wheel yet)
leofang May 22, 2026
ee8db04
Build numpy in manylinux container for glibc compat; fix Windows glob
leofang May 30, 2026
3f1f3c0
Fix numpy cibuildwheel: patch cpython-freethreading, unify platforms
leofang May 30, 2026
b808899
Strip numpy cibuildwheel config; build without BLAS
leofang May 30, 2026
bd3e990
Fix numpy pyproject.toml patch to preserve [tool.meson-python]
leofang May 30, 2026
4898bde
Fix test_graphics_api_smoketest on py3.10/3.11 Windows
leofang May 30, 2026
fe6d2bb
Exclude Python 3.15 wheels from release publishing
leofang May 30, 2026
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73 changes: 68 additions & 5 deletions .github/workflows/build-wheel.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -29,9 +29,10 @@ jobs:
- "3.11"
- "3.12"
- "3.13"
- "3.13t"
- "3.14"
- "3.14t"
- "3.15"
- "3.15t"
name: py${{ matrix.python-version }}
runs-on: ${{ (inputs.host-platform == 'linux-64' && 'linux-amd64-cpu8') ||
(inputs.host-platform == 'linux-aarch64' && 'linux-arm64-cpu8') ||
Expand Down Expand Up @@ -111,7 +112,7 @@ jobs:
if-no-files-found: error

- name: Build cuda.core wheel
uses: pypa/cibuildwheel@8d2b08b68458a16aeb24b64e68a09ab1c8e82084 # v3.4.1
uses: pypa/cibuildwheel@54327ab9d35de03b359ac25c97de9417d94639c0 # v4.0.0rc1
env:
CIBW_BUILD: ${{ env.CIBW_BUILD }}
CIBW_ARCHS_LINUX: "native"
Expand All @@ -120,7 +121,7 @@ jobs:
CIBW_REPAIR_WHEEL_COMMAND_WINDOWS: "delvewheel repair --namespace-pkg cuda -w {dest_dir} {wheel}"
CIBW_ENVIRONMENT: >
CUDA_PYTHON_PARALLEL_LEVEL=${{ env.CUDA_PYTHON_PARALLEL_LEVEL }}
CIBW_ENABLE: "cpython-freethreading"
CIBW_ENABLE: "cpython-prerelease"
with:
package-dir: ./cuda_core/
output-dir: ${{ env.CUDA_CORE_ARTIFACTS_DIR }}
Expand Down Expand Up @@ -154,7 +155,7 @@ jobs:
cuda-version: ${{ inputs.cuda-version }}

- name: Build cuda.bindings wheel
uses: pypa/cibuildwheel@8d2b08b68458a16aeb24b64e68a09ab1c8e82084 # v3.4.1
uses: pypa/cibuildwheel@54327ab9d35de03b359ac25c97de9417d94639c0 # v4.0.0rc1
env:
CIBW_BUILD: ${{ env.CIBW_BUILD }}
CIBW_ARCHS_LINUX: "native"
Expand All @@ -168,7 +169,7 @@ jobs:
CUDA_PYTHON_PARALLEL_LEVEL=${{ env.CUDA_PYTHON_PARALLEL_LEVEL }}
CIBW_BEFORE_BUILD_WINDOWS: "pip install delvewheel"
CIBW_REPAIR_WHEEL_COMMAND_WINDOWS: "delvewheel repair --namespace-pkg cuda -w {dest_dir} {wheel}"
CIBW_ENABLE: "cpython-freethreading"
CIBW_ENABLE: "cpython-prerelease"
with:
package-dir: ./cuda_bindings/
output-dir: ${{ env.CUDA_BINDINGS_ARTIFACTS_DIR }}
Expand Down Expand Up @@ -249,6 +250,68 @@ jobs:
run: |
pip install cuda_pathfinder/*.whl

- name: Hide GNU link.exe so Meson finds MSVC link.exe
if: ${{ startsWith(inputs.host-platform, 'win') }}
run: |
if [ -f "/c/Program Files/Git/usr/bin/link.exe" ]; then
mv "/c/Program Files/Git/usr/bin/link.exe" "/c/Program Files/Git/usr/bin/link.exe.bak"
fi
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@leofang leofang May 22, 2026

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Note: Adding this workaround because it choked Meson:

      ..\meson.build:1:0: ERROR: Found GNU link.exe instead of MSVC link.exe in C:\Program Files\Git\usr\bin\link.EXE.
      This link.exe is not a linker.
      You may need to reorder entries to your %PATH% variable to resolve this.

https://github.com/NVIDIA/cuda-python/actions/runs/26313382675/job/77467388926?pr=2133#step:29:111


- name: Download and patch numpy sdist (pre-release Python)
if: ${{ startsWith(matrix.python-version, '3.15') }}
run: |
pip download --no-binary numpy --no-deps "numpy>=1.21.1" -d numpy-sdist/
cd numpy-sdist && tar xf numpy-*.tar.gz && rm numpy-*.tar.gz
# WAR: numpy 2.4.x ships [tool.cibuildwheel] config that is
# incompatible with cibuildwheel v4.0 (cpython-freethreading enable
# group, OpenBLAS before-build scripts, etc.). Strip the cibuildwheel
# sections but preserve [tool.meson-python] (vendored meson path).
python -c "
import glob
for f in glob.glob('numpy-*/pyproject.toml'):
lines, skip = open(f).readlines(), False
out = []
for line in lines:
hdr = line.strip()
if hdr.startswith('[tool.cibuildwheel') or hdr.startswith('[[tool.cibuildwheel'):
skip = True
continue
if skip and hdr.startswith('[') and 'cibuildwheel' not in hdr:
skip = False
if not skip:
out.append(line)
open(f, 'w').writelines(out)
"
echo "NUMPY_SRC_DIR=$(pwd)/$(ls -d numpy-*/)" >> $GITHUB_ENV

- name: Build numpy wheel (pre-release Python)
if: ${{ startsWith(matrix.python-version, '3.15') }}
uses: pypa/cibuildwheel@54327ab9d35de03b359ac25c97de9417d94639c0 # v4.0.0rc1
env:
CIBW_BUILD: ${{ env.CIBW_BUILD }}
CIBW_ARCHS_LINUX: "native"
CIBW_BUILD_VERBOSITY: 1
CIBW_CONFIG_SETTINGS: "setup-args=-Dallow-noblas=true"
CIBW_CONFIG_SETTINGS_WINDOWS: "setup-args=--vsenv setup-args=-Dallow-noblas=true"
CIBW_BEFORE_BUILD_WINDOWS: "pip install delvewheel"
CIBW_REPAIR_WHEEL_COMMAND_WINDOWS: "delvewheel repair -w {dest_dir} {wheel}"
CIBW_ENABLE: "cpython-prerelease"
with:
package-dir: ${{ env.NUMPY_SRC_DIR }}
output-dir: numpy-wheel/

- name: Upload numpy wheel
if: ${{ startsWith(matrix.python-version, '3.15') }}
uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
with:
name: numpy-python${{ env.PYTHON_VERSION_FORMATTED }}-${{ inputs.host-platform }}
path: numpy-wheel/*.whl
if-no-files-found: error

- name: Install numpy wheel
if: ${{ startsWith(matrix.python-version, '3.15') }}
run: pip install numpy-wheel/*.whl

- name: Build cuda.bindings Cython tests
run: |
pip install $(ls ${{ env.CUDA_BINDINGS_ARTIFACTS_DIR }}/*.whl)[test]
Expand Down
4 changes: 4 additions & 0 deletions .github/workflows/release.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -163,6 +163,10 @@ jobs:
if [[ "${p}" == *-tests ]]; then
continue
fi
# exclude pre-release Python (3.15) wheels from publishing
if [[ "${p}" == *python315* ]]; then
continue
fi
mv ${p}/*.whl dist/
done
rm -rf ${{ inputs.component }}*
Expand Down
11 changes: 11 additions & 0 deletions .github/workflows/test-wheel-linux.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -240,6 +240,17 @@ jobs:
- name: Set up compute-sanitizer
run: setup-sanitizer

- name: Download numpy wheel (pre-release Python)
if: ${{ startsWith(matrix.PY_VER, '3.15') }}
uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
with:
name: numpy-python${{ env.PYTHON_VERSION_FORMATTED }}-${{ inputs.host-platform }}
path: numpy-wheel

- name: Install numpy wheel (pre-release Python)
if: ${{ startsWith(matrix.PY_VER, '3.15') }}
run: pip install numpy-wheel/*.whl

- name: Run cuda.bindings tests
if: ${{ env.SKIP_CUDA_BINDINGS_TEST == '0' }}
env:
Expand Down
12 changes: 12 additions & 0 deletions .github/workflows/test-wheel-windows.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -215,6 +215,18 @@ jobs:
host-platform: ${{ inputs.host-platform }}
cuda-version: ${{ matrix.CUDA_VER }}

- name: Download numpy wheel (pre-release Python)
if: ${{ startsWith(matrix.PY_VER, '3.15') }}
uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
with:
name: numpy-python${{ env.PYTHON_VERSION_FORMATTED }}-${{ inputs.host-platform }}
path: numpy-wheel

- name: Install numpy wheel (pre-release Python)
if: ${{ startsWith(matrix.PY_VER, '3.15') }}
shell: bash --noprofile --norc -xeuo pipefail {0}
run: pip install numpy-wheel/*.whl

- name: Run cuda.bindings tests
if: ${{ env.SKIP_CUDA_BINDINGS_TEST == '0' }}
env:
Expand Down
30 changes: 18 additions & 12 deletions ci/test-matrix.json
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Original file line number Diff line number Diff line change
Expand Up @@ -12,9 +12,10 @@
{ "ARCH": "amd64", "PY_VER": "3.12", "CUDA_VER": "13.0.1", "LOCAL_CTK": "0", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.13", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.13", "CUDA_VER": "13.0.1", "LOCAL_CTK": "1", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.13t", "CUDA_VER": "12.9.1", "LOCAL_CTK": "1", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.14", "CUDA_VER": "12.9.1", "LOCAL_CTK": "1", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.14t", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.15", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.15t", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "arm64", "PY_VER": "3.10", "CUDA_VER": "12.9.1", "LOCAL_CTK": "1", "GPU": "a100", "DRIVER": "latest" },
{ "ARCH": "arm64", "PY_VER": "3.10", "CUDA_VER": "13.0.1", "LOCAL_CTK": "0", "GPU": "a100", "DRIVER": "latest" },
{ "ARCH": "arm64", "PY_VER": "3.11", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "a100", "DRIVER": "latest" },
Expand All @@ -23,9 +24,10 @@
{ "ARCH": "arm64", "PY_VER": "3.12", "CUDA_VER": "13.0.1", "LOCAL_CTK": "0", "GPU": "a100", "DRIVER": "latest" },
{ "ARCH": "arm64", "PY_VER": "3.13", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "a100", "DRIVER": "latest" },
{ "ARCH": "arm64", "PY_VER": "3.13", "CUDA_VER": "13.0.1", "LOCAL_CTK": "1", "GPU": "a100", "DRIVER": "latest" },
{ "ARCH": "arm64", "PY_VER": "3.13t", "CUDA_VER": "12.9.1", "LOCAL_CTK": "1", "GPU": "a100", "DRIVER": "latest" },
{ "ARCH": "arm64", "PY_VER": "3.14", "CUDA_VER": "12.9.1", "LOCAL_CTK": "1", "GPU": "a100", "DRIVER": "latest" },
{ "ARCH": "arm64", "PY_VER": "3.14t", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "a100", "DRIVER": "latest" }
{ "ARCH": "arm64", "PY_VER": "3.14t", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "a100", "DRIVER": "latest" },
{ "ARCH": "arm64", "PY_VER": "3.15", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "a100", "DRIVER": "latest" },
{ "ARCH": "arm64", "PY_VER": "3.15t", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "a100", "DRIVER": "latest" }
],
"nightly": [
{ "ARCH": "amd64", "PY_VER": "3.10", "CUDA_VER": "11.8.0", "LOCAL_CTK": "0", "GPU": "l4", "DRIVER": "earliest" },
Expand Down Expand Up @@ -77,20 +79,24 @@
},
"windows": {
"pull-request": [
{ "ARCH": "amd64", "PY_VER": "3.12", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.12", "CUDA_VER": "12.9.1", "LOCAL_CTK": "1", "GPU": "t4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.13", "CUDA_VER": "13.0.1", "LOCAL_CTK": "0", "GPU": "t4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.13", "CUDA_VER": "13.0.1", "LOCAL_CTK": "1", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.13t", "CUDA_VER": "13.0.1", "LOCAL_CTK": "0", "GPU": "t4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.13t", "CUDA_VER": "13.0.1", "LOCAL_CTK": "1", "GPU": "l4", "DRIVER": "latest" }
{ "ARCH": "amd64", "PY_VER": "3.10", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.10", "CUDA_VER": "12.9.1", "LOCAL_CTK": "1", "GPU": "t4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.11", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "t4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.11", "CUDA_VER": "12.9.1", "LOCAL_CTK": "1", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.12", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.12", "CUDA_VER": "12.9.1", "LOCAL_CTK": "1", "GPU": "t4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.13", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "t4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.13", "CUDA_VER": "12.9.1", "LOCAL_CTK": "1", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.14", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "t4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.14t", "CUDA_VER": "12.9.1", "LOCAL_CTK": "1", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.15", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.15t", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "l4", "DRIVER": "latest" }
],
"nightly": [
{ "ARCH": "amd64", "PY_VER": "3.12", "CUDA_VER": "11.8.0", "LOCAL_CTK": "0", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.12", "CUDA_VER": "11.8.0", "LOCAL_CTK": "1", "GPU": "t4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.12", "CUDA_VER": "12.9.1", "LOCAL_CTK": "0", "GPU": "t4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.12", "CUDA_VER": "12.9.1", "LOCAL_CTK": "1", "GPU": "l4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.13t", "CUDA_VER": "13.0.1", "LOCAL_CTK": "0", "GPU": "t4", "DRIVER": "latest" },
{ "ARCH": "amd64", "PY_VER": "3.13t", "CUDA_VER": "13.0.1", "LOCAL_CTK": "1", "GPU": "l4", "DRIVER": "latest" }
{ "ARCH": "amd64", "PY_VER": "3.12", "CUDA_VER": "12.9.1", "LOCAL_CTK": "1", "GPU": "l4", "DRIVER": "latest" }
]
}
}
6 changes: 6 additions & 0 deletions ci/tools/download-wheels
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,12 @@ do
continue
fi

# exclude pre-release Python (3.15) wheels from releasing
if [[ "${p}" == *python315* ]]; then
echo "Skipping pre-release Python artifact: $p"
continue
fi

# If we're not downloading "all", only process matching component
if [[ "$COMPONENT" != "all" && "$p" != ${COMPONENT}* ]]; then
continue
Expand Down
2 changes: 1 addition & 1 deletion cuda_bindings/tests/test_graphics_apis.py
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@ def test_graphics_api_smoketest():
import pyglet

tex = pyglet.image.Texture.create(512, 512)
except (ImportError, AttributeError):
except (ImportError, AttributeError, OSError):
pytest.skip("pyglet not available or could not create GL context")
# return to make linters happy
return
Expand Down
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