Move cuda.core Windows AOTI stub-lib generation into build_ext in setup.py

[rwgk]

Background

cuda_core needs a Windows stub import library for _tensor_bridge so MSVC can link against PyTorch's AOTI symbols from torch_cpu.dll without making PyTorch itself a build-time dependency.

That stub library was previously generated in cuda_core/build_hooks.py. This worked in CI because the Windows workflows explicitly prepare the MSVC environment first, but it made local/source builds depend on a separate toolchain discovery path before setuptools had initialized its compiler machinery.

What This Changes

• Move Windows aoti_shim.lib generation out of cuda_core/build_hooks.py and into cuda_core/setup.py.
• Generate the stub import library during build_ext, after setuptools has created and initialized the compiler object it will actually use for the extension build.
• Reuse the compiler's discovered lib.exe and append the generated import library only to cuda.core._tensor_bridge.
• Remove the Windows-specific lib.exe subprocess path from the PEP 517 build backend so build_hooks.py goes back to focusing on extension preparation and cythonization.
• Update the comments in aoti_shim.h and aoti_shim.def to document that the stub library is now produced from setup.py/build_ext.

Why

• Reuses the same MSVC discovery path that setuptools already uses for the actual extension build instead of maintaining a second discovery/bootstrap path in the build backend.
• Keeps local Windows source builds aligned with the way CI succeeds, without requiring developers or QA environments to launch builds from a Visual Studio developer prompt.
• Reduces build backend complexity and keeps the Windows-specific link setup closer to the place where the compiler is already available.

Scope

• Functional change is Windows-only.
• The link adjustment is limited to cuda.core._tensor_bridge.
• Linux build behavior remains unchanged.

Testing

• Verified with the local Windows QA build that previously failed when the stub library was created from build_hooks.py.

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[rwgk]

/ok to test

[github-actions]

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[rwgk]

Local testing with pytorch installed:

pip install ml_dtypes
pip install "torch==2.9.1" --extra-index-url https://download.pytorch.org/whl/cu130

(TestVenv) PS C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core> pip list
Package              Version                  Editable project location
-------------------- ------------------------ ------------------------------------------------------------
cffi                 2.0.0
cloudpickle          3.1.2
colorama             0.4.6
contourpy            1.3.3
cuda-bindings        13.2.1.dev174+g38c032f86 C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_bindings
cuda-core            0.7.1.dev95+g0d0ba4c1b   C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core
cuda-pathfinder      1.5.5.dev32+g38c032f86   C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_pathfinder
cycler               0.12.1
Cython               3.2.4
filelock             3.29.0
fonttools            4.62.1
fsspec               2026.4.0
iniconfig            2.3.0
Jinja2               3.1.6
kiwisolver           1.5.0
MarkupSafe           3.0.3
matplotlib           3.10.9
ml_dtypes            0.5.4
mpmath               1.3.0
networkx             3.6.1
numpy                2.4.4
packaging            26.2
pillow               12.2.0
pip                  26.1.1
pluggy               1.6.0
psutil               7.2.2
py-cpuinfo           9.0.0
pycparser            3.0
pyglet               2.1.14
Pygments             2.20.0
pyparsing            3.3.2
pytest               9.0.3
pytest-benchmark     5.2.3
pytest-mock          3.15.1
pytest-randomly      4.1.0
pytest-repeat        0.9.4
pytest-rerunfailures 16.1
python-dateutil      2.9.0.post0
setuptools           82.0.1
six                  1.17.0
sympy                1.14.0
torch                2.9.1+cu130
typing_extensions    4.15.0

(TestVenv) PS C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core> pytest -rxXs -v --durations=0 tests/test_utils.py tests/example_tests/
========================================================================= test session starts =========================================================================
platform win32 -- Python 3.13.13, pytest-9.0.3, pluggy-1.6.0 -- C:\Users\rgrossekunst\wrk\forked\cuda-python\TestVenv\Scripts\python.exe
cachedir: .pytest_cache
benchmark: 5.2.3 (defaults: timer=time.perf_counter disable_gc=False min_rounds=5 min_time=0.000005 max_time=1.0 calibration_precision=10 warmup=False warmup_iterations=100000)
Using --randomly-seed=3280579104
rootdir: C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core
configfile: pytest.ini
plugins: benchmark-5.2.3, mock-3.15.1, randomly-4.1.0, repeat-0.9.4, rerunfailures-16.1
collected 222 items

tests/example_tests/test_basic_examples.py::test_example[jit_lto_fractal.py] SKIPPED (Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core\tests\...) [  0%]
tests/example_tests/test_basic_examples.py::test_example[show_device_properties.py] PASSED                                                                       [  0%]
tests/example_tests/test_basic_examples.py::test_example[gl_interop_plasma.py] SKIPPED (Skipping gl_interop_plasma.py due to unmet system requirement)           [  1%]
tests/example_tests/test_basic_examples.py::test_example[thread_block_cluster.py] SKIPPED (Skipping thread_block_cluster.py due to unmet system requirement)     [  1%]
tests/example_tests/test_basic_examples.py::test_example[strided_memory_view_gpu.py] SKIPPED (Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_cor...) [  2%]
tests/example_tests/test_basic_examples.py::test_example[tma_tensor_map.py] SKIPPED (Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core\tests\e...) [  2%]
tests/example_tests/test_basic_examples.py::test_example[cuda_graphs.py] SKIPPED (Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core\tests\exam...) [  3%]
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tests/example_tests/test_basic_examples.py::test_example[pytorch_example.py] SKIPPED (Skipping pytorch_example.py due to unmet system requirement)               [  4%]
tests/example_tests/test_basic_examples.py::test_example[graph_update.py] SKIPPED (Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core\tests\exa...) [  5%]
tests/example_tests/test_basic_examples.py::test_example[saxpy.py] SKIPPED (Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core\tests\example_te...) [  5%]
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tests/test_utils.py::TestViewCudaArrayInterfaceGPU::test_cuda_array_interface_gpu[torch-nd] SKIPPED (CuPy is not installed)                                      [  7%]
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tests/test_utils.py::TestViewCPU::test_strided_memory_view_cpu_init[torch-1d] PASSED                                                                             [ 10%]
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tests/test_utils.py::TestViewCPU::test_strided_memory_view_cpu_init[torch-non-contiguous] PASSED                                                                 [ 11%]
tests/test_utils.py::TestViewCPU::test_strided_memory_view_cpu[in_arr4] PASSED                                                                                   [ 12%]
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tests/test_utils.py::TestViewCPU::test_strided_memory_view_cpu[torch-scalar] PASSED                                                                              [ 13%]
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tests/test_utils.py::TestViewCPU::test_strided_memory_view_cpu_init[torch-scalar] PASSED                                                                         [ 16%]
tests/test_utils.py::TestViewCPU::test_args_viewable_as_strided_memory_cpu[in_arr0] PASSED                                                                       [ 16%]
tests/test_utils.py::TestViewCPU::test_strided_memory_view_cpu[in_arr1] PASSED                                                                                   [ 17%]
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tests/test_utils.py::TestViewCPU::test_strided_memory_view_cpu[in_arr0] PASSED                                                                                   [ 19%]
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tests/test_utils.py::TestViewCPU::test_strided_memory_view_cpu[torch-non-contiguous] PASSED                                                                      [ 20%]
tests/test_utils.py::TestViewCPU::test_strided_memory_view_cpu_init[in_arr3] PASSED                                                                              [ 21%]
tests/test_utils.py::TestViewCPU::test_strided_memory_view_cpu_init[in_arr2] PASSED                                                                              [ 21%]
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tests/test_utils.py::TestViewCPU::test_strided_memory_view_cpu_init[in_arr0] PASSED                                                                              [ 22%]
tests/test_utils.py::TestViewCPU::test_strided_memory_view_cpu[torch-nd] PASSED                                                                                  [ 22%]
tests/test_utils.py::TestViewCPU::test_strided_memory_view_cpu_init[in_arr1] PASSED                                                                              [ 23%]
tests/test_utils.py::TestViewCPU::test_strided_memory_view_cpu[torch-sliced] PASSED                                                                              [ 23%]
tests/test_utils.py::TestViewCPU::test_args_viewable_as_strided_memory_cpu[torch-sliced-2d] PASSED                                                               [ 24%]
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tests/test_utils.py::TestViewCPU::test_strided_memory_view_cpu_init[in_arr4] PASSED                                                                              [ 25%]
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tests/test_utils.py::TestViewGPU::test_strided_memory_view_cpu[torch-1d] PASSED                                                                                  [ 27%]
tests/test_utils.py::TestViewGPU::test_strided_memory_view_cpu[torch-non-contiguous] PASSED                                                                      [ 27%]
tests/test_utils.py::TestViewGPU::test_strided_memory_view_init[torch-empty] PASSED                                                                              [ 27%]
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tests/test_utils.py::TestViewGPU::test_strided_memory_view_init[torch-nd] PASSED                                                                                 [ 29%]
tests/test_utils.py::TestViewGPU::test_args_viewable_as_strided_memory_gpu[torch-nd] PASSED                                                                      [ 29%]
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tests/test_utils.py::TestViewGPU::test_strided_memory_view_cpu[torch-scalar] PASSED                                                                              [ 31%]
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tests/test_utils.py::TestViewGPU::test_strided_memory_view_cpu[torch-sliced] PASSED                                                                              [ 35%]
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tests/test_utils.py::test_strided_memory_view_exposes_dlpack_c_exchange_api_capsule PASSED                                                                       [ 39%]
tests/test_utils.py::test_strided_memory_view_dlpack_export_requires_dtype PASSED                                                                                [ 39%]
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tests/test_utils.py::test_strided_memory_view_dlpack_export_cupy_roundtrip SKIPPED (CuPy is not installed)                                                       [ 40%]
tests/test_utils.py::test_from_array_interface[2d-f-float64] PASSED                                                                                              [ 40%]
tests/test_utils.py::test_strided_memory_view_view_with_dtype_only PASSED                                                                                        [ 41%]
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tests/test_utils.py::test_from_buffer[False-F-int8-(10, 10)] PASSED                                                                                              [ 59%]
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tests/test_utils.py::test_from_array_interface[1d-complex64] PASSED                                                                                              [ 63%]
tests/test_utils.py::test_from_array_interface[1d-int16] PASSED                                                                                                  [ 64%]
tests/test_utils.py::test_from_buffer[True-F-uint32-(2, 3)] PASSED                                                                                               [ 64%]
tests/test_utils.py::test_from_buffer[True-F-int8-()] PASSED                                                                                                     [ 65%]
tests/test_utils.py::test_view_zero_size_array[int64-shape0-from_cuda_array_interface] SKIPPED (could not import 'cupy': No module named 'cupy')                 [ 65%]
tests/test_utils.py::test_view_zero_size_array[int64-shape1-from_cuda_array_interface] SKIPPED (could not import 'cupy': No module named 'cupy')                 [ 66%]
tests/test_utils.py::test_strided_memory_view_deprecated_cai_init SKIPPED (CuPy is not installed)                                                                [ 66%]
tests/test_utils.py::test_view_sliced_external[shape5-slices5-C-cai] SKIPPED (CuPy is not installed)                                                             [ 67%]
tests/test_utils.py::test_view_zero_size_array[int64-shape2-from_cuda_array_interface] SKIPPED (could not import 'cupy': No module named 'cupy')                 [ 67%]
tests/test_utils.py::test_from_buffer[True-C-int8-(10, 10)] PASSED                                                                                               [ 68%]
tests/test_utils.py::test_view_zero_size_array[uint8-shape0-from_dlpack] SKIPPED (could not import 'cupy': No module named 'cupy')                               [ 68%]
tests/test_utils.py::test_from_array_interface[2d-strided-2x2-int32] PASSED                                                                                      [ 68%]
tests/test_utils.py::test_from_array_interface[1d-uint8] PASSED                                                                                                  [ 69%]
tests/test_utils.py::test_from_array_interface[single-element] PASSED                                                                                            [ 69%]
tests/test_utils.py::test_strided_memory_view_copy_to_raises PASSED                                                                                              [ 70%]
tests/test_utils.py::test_from_buffer_sliced[F] PASSED                                                                                                           [ 70%]
tests/test_utils.py::test_from_buffer[True-C-int8-()] PASSED                                                                                                     [ 71%]
tests/test_utils.py::test_from_buffer[True-F-int8-(2, 3)] PASSED                                                                                                 [ 71%]
tests/test_utils.py::test_torch_tensor_bridge_dtypes[float32] PASSED                                                                                             [ 72%]
tests/test_utils.py::test_from_array_interface[2d-strided-float64] PASSED                                                                                        [ 72%]
tests/test_utils.py::test_struct_array SKIPPED (could not import 'cupy': No module named 'cupy')                                                                 [ 72%]
tests/test_utils.py::test_view_zero_size_array[float64-shape0-from_cuda_array_interface] SKIPPED (could not import 'cupy': No module named 'cupy')               [ 73%]
tests/test_utils.py::test_view_zero_size_array[uint8-shape2-from_dlpack] SKIPPED (could not import 'cupy': No module named 'cupy')                               [ 73%]
tests/test_utils.py::test_view_zero_size_array[float64-shape1-from_cuda_array_interface] SKIPPED (could not import 'cupy': No module named 'cupy')               [ 74%]
tests/test_utils.py::test_from_buffer[True-F-int8-(10, 13, 11)] PASSED                                                                                           [ 74%]
tests/test_utils.py::test_from_array_interface[2d-f-int32] PASSED                                                                                                [ 75%]
tests/test_utils.py::test_view_zero_size_array[float64-shape2-from_cuda_array_interface] SKIPPED (could not import 'cupy': No module named 'cupy')               [ 75%]
tests/test_utils.py::test_view_sliced_external[shape0-slices0-C-dlpack] PASSED                                                                                   [ 76%]
tests/test_utils.py::test_array_interface_v2_rejected PASSED                                                                                                     [ 76%]
tests/test_utils.py::test_from_cuda_array_interface_empty_array PASSED                                                                                           [ 77%]
tests/test_utils.py::test_from_array_interface_unsupported_strides PASSED                                                                                        [ 77%]
tests/test_utils.py::test_view_sliced_external_negative_offset[C-dlpack] PASSED                                                                                  [ 77%]
tests/test_utils.py::test_ml_dtypes_bfloat16_torch_dlpack[strided] PASSED                                                                                        [ 78%]
tests/test_utils.py::test_view_sliced_external[shape6-slices6-F-dlpack] PASSED                                                                                   [ 78%]
tests/test_utils.py::test_from_buffer[False-F-uint32-(10, 10)] PASSED                                                                                            [ 79%]
tests/test_utils.py::test_from_buffer[False-F-uint32-(10, 13, 11)] PASSED                                                                                        [ 79%]
tests/test_utils.py::test_view_sliced_external_negative_offset[F-cai] SKIPPED (CuPy is not installed)                                                            [ 80%]
tests/test_utils.py::test_from_buffer_incompatible_dtype_and_itemsize[dtype0-1-itemsize .+ does not match dtype.itemsize .+] PASSED                              [ 80%]
tests/test_utils.py::test_from_array_interface[1d-strided-int32] PASSED                                                                                          [ 81%]
tests/test_utils.py::test_from_buffer[False-C-int8-(2, 3)] PASSED                                                                                                [ 81%]
tests/test_utils.py::test_from_array_interface[3d-float64] PASSED                                                                                                [ 81%]
tests/test_utils.py::test_cai_mask_rejected PASSED                                                                                                               [ 82%]
tests/test_utils.py::test_from_array_interface[2d-c-float32] PASSED                                                                                              [ 82%]
tests/test_utils.py::test_from_array_interface[structured-dtype] PASSED                                                                                          [ 83%]
tests/test_utils.py::test_view_sliced_external[shape3-slices3-F-cai] SKIPPED (CuPy is not installed)                                                             [ 83%]
tests/test_utils.py::test_torch_tensor_bridge_dtypes[int32] PASSED                                                                                               [ 84%]
tests/test_utils.py::test_from_buffer[True-C-int8-(10, 13, 11)] PASSED                                                                                           [ 84%]
tests/test_utils.py::test_from_buffer[True-C-uint32-(10, 13, 11)] PASSED                                                                                         [ 85%]
tests/test_utils.py::test_torch_tensor_bridge_dtypes[uint8] PASSED                                                                                               [ 85%]
tests/test_utils.py::test_view_sliced_external[shape4-slices4-C-dlpack] PASSED                                                                                   [ 86%]
tests/test_utils.py::test_from_buffer[False-F-int8-()] PASSED                                                                                                    [ 86%]
tests/test_utils.py::test_from_cuda_array_interface_unsupported_strides PASSED                                                                                   [ 86%]
tests/test_utils.py::test_torch_tensor_bridge_dtypes[int16] PASSED                                                                                               [ 87%]
tests/test_utils.py::test_from_array_interface[empty-2d-float64] PASSED                                                                                          [ 87%]
tests/test_utils.py::test_view_zero_size_array[float64-shape0-from_dlpack] SKIPPED (could not import 'cupy': No module named 'cupy')                             [ 88%]
tests/test_utils.py::test_strided_memory_view_repr PASSED                                                                                                        [ 88%]
tests/test_utils.py::test_ml_dtypes_bfloat16_torch_dlpack[contiguous] PASSED                                                                                     [ 89%]
tests/test_utils.py::test_from_buffer[True-C-uint32-(10, 10)] PASSED                                                                                             [ 89%]
tests/test_utils.py::test_torch_tensor_bridge_dtypes[float64] PASSED                                                                                             [ 90%]
tests/test_utils.py::test_from_array_interface[2d-c-int32] PASSED                                                                                                [ 90%]
tests/test_utils.py::test_dlpack_export_unsupported_dtype_raises PASSED                                                                                          [ 90%]
tests/test_utils.py::test_from_buffer[False-C-uint32-(10, 13, 11)] PASSED                                                                                        [ 91%]
tests/test_utils.py::test_torch_tensor_bridge_dtypes[int64] PASSED                                                                                               [ 91%]
tests/test_utils.py::test_view_sliced_external[shape7-slices7-F-cai] SKIPPED (CuPy is not installed)                                                             [ 92%]
tests/test_utils.py::test_view_sliced_external_negative_offset[F-dlpack] PASSED                                                                                  [ 92%]
tests/test_utils.py::test_from_array_interface[1d-float64] PASSED                                                                                                [ 93%]
tests/test_utils.py::test_view_zero_size_array[uint8-shape1-from_dlpack] SKIPPED (could not import 'cupy': No module named 'cupy')                               [ 93%]
tests/test_utils.py::test_torch_tensor_bridge_dtypes[float16] PASSED                                                                                             [ 94%]
tests/test_utils.py::test_from_array_interface[1d-complex128] PASSED                                                                                             [ 94%]
tests/test_utils.py::test_strided_memory_view_view_no_args_returns_self PASSED                                                                                   [ 95%]
tests/test_utils.py::test_view_zero_size_array[int64-shape0-from_dlpack] SKIPPED (could not import 'cupy': No module named 'cupy')                               [ 95%]
tests/test_utils.py::test_from_buffer[True-F-uint32-(10, 13, 11)] PASSED                                                                                         [ 95%]
tests/test_utils.py::test_from_buffer_sliced[C] PASSED                                                                                                           [ 96%]
tests/test_utils.py::test_from_buffer_too_small PASSED                                                                                                           [ 96%]
tests/test_utils.py::test_view_sliced_external_negative_offset[C-cai] SKIPPED (CuPy is not installed)                                                            [ 97%]
tests/test_utils.py::test_from_cuda_array_interface_negative_strides SKIPPED (CuPy is not installed)                                                             [ 97%]
tests/test_utils.py::test_from_array_interface[scalar-int32] PASSED                                                                                              [ 98%]
tests/test_utils.py::test_array_interface_mask_rejected PASSED                                                                                                   [ 98%]
tests/test_utils.py::test_from_buffer[True-C-uint32-()] PASSED                                                                                                   [ 99%]
tests/test_utils.py::test_view_sliced_external[shape2-slices2-F-dlpack] PASSED                                                                                   [ 99%]
tests/test_utils.py::test_from_buffer[False-C-uint32-()] PASSED                                                                                                  [100%]

========================================================================== slowest durations ==========================================================================
0.48s call     tests/example_tests/test_basic_examples.py::test_example[show_device_properties.py]
0.01s call     tests/example_tests/test_basic_examples.py::test_example[jit_lto_fractal.py]
0.01s call     tests/example_tests/test_basic_examples.py::test_example[strided_memory_view_cpu.py]
0.01s call     tests/example_tests/test_basic_examples.py::test_example[vector_add.py]
0.01s call     tests/example_tests/test_basic_examples.py::test_example[cuda_graphs.py]
0.01s call     tests/example_tests/test_basic_examples.py::test_example[saxpy.py]
0.01s call     tests/example_tests/test_basic_examples.py::test_example[gl_interop_plasma.py]
0.01s call     tests/example_tests/test_basic_examples.py::test_example[strided_memory_view_constructors.py]
0.01s call     tests/example_tests/test_basic_examples.py::test_example[memory_ops.py]
0.01s call     tests/example_tests/test_basic_examples.py::test_example[strided_memory_view_gpu.py]
0.01s call     tests/example_tests/test_basic_examples.py::test_example[graph_update.py]
0.01s call     tests/example_tests/test_basic_examples.py::test_example[tma_tensor_map.py]
0.01s call     tests/example_tests/test_basic_examples.py::test_example[simple_multi_gpu_example.py]
0.01s call     tests/example_tests/test_basic_examples.py::test_example[memory_pool_resources.py]
0.01s call     tests/example_tests/test_basic_examples.py::test_example[thread_block_cluster.py]

(636 durations < 0.005s hidden.  Use -vv to show these durations.)
======================================================================= short test summary info =======================================================================
SKIPPED [1] ..\cuda_bindings\cuda\bindings\_test_helpers\pep723.py:46: Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core\tests\example_tests\..\..\examples\jit_lto_fractal.py due to missing package requirement: nvidia-cuda-nvrtc, cupy-cuda13x
SKIPPED [1] tests\example_tests\test_basic_examples.py:107: Skipping gl_interop_plasma.py due to unmet system requirement
SKIPPED [1] tests\example_tests\test_basic_examples.py:107: Skipping thread_block_cluster.py due to unmet system requirement
SKIPPED [1] ..\cuda_bindings\cuda\bindings\_test_helpers\pep723.py:46: Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core\tests\example_tests\..\..\examples\strided_memory_view_gpu.py due to missing package requirement: nvidia-cuda-nvrtc, cupy-cuda13x
SKIPPED [1] ..\cuda_bindings\cuda\bindings\_test_helpers\pep723.py:46: Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core\tests\example_tests\..\..\examples\tma_tensor_map.py due to missing package requirement: cupy-cuda13x
SKIPPED [1] ..\cuda_bindings\cuda\bindings\_test_helpers\pep723.py:46: Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core\tests\example_tests\..\..\examples\cuda_graphs.py due to missing package requirement: nvidia-cuda-nvrtc, cupy-cuda13x
SKIPPED [1] ..\cuda_bindings\cuda\bindings\_test_helpers\pep723.py:46: Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core\tests\example_tests\..\..\examples\memory_pool_resources.py due to missing package requirement: nvidia-cuda-nvrtc
SKIPPED [1] tests\example_tests\test_basic_examples.py:107: Skipping strided_memory_view_cpu.py due to unmet system requirement
SKIPPED [1] ..\cuda_bindings\cuda\bindings\_test_helpers\pep723.py:46: Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core\tests\example_tests\..\..\examples\strided_memory_view_constructors.py due to missing package requirement: cupy-cuda13x
SKIPPED [1] tests\example_tests\test_basic_examples.py:107: Skipping pytorch_example.py due to unmet system requirement
SKIPPED [1] ..\cuda_bindings\cuda\bindings\_test_helpers\pep723.py:46: Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core\tests\example_tests\..\..\examples\graph_update.py due to missing package requirement: nvidia-cuda-nvrtc
SKIPPED [1] ..\cuda_bindings\cuda\bindings\_test_helpers\pep723.py:46: Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core\tests\example_tests\..\..\examples\saxpy.py due to missing package requirement: nvidia-cuda-nvrtc, cupy-cuda13x
SKIPPED [1] ..\cuda_bindings\cuda\bindings\_test_helpers\pep723.py:46: Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core\tests\example_tests\..\..\examples\simple_multi_gpu_example.py due to missing package requirement: cupy-cuda13x
SKIPPED [1] ..\cuda_bindings\cuda\bindings\_test_helpers\pep723.py:46: Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core\tests\example_tests\..\..\examples\memory_ops.py due to missing package requirement: nvidia-cuda-nvrtc, cupy-cuda13x
SKIPPED [1] ..\cuda_bindings\cuda\bindings\_test_helpers\pep723.py:46: Skipping C:\Users\rgrossekunst\wrk\forked\cuda-python\cuda_core\tests\example_tests\..\..\examples\vector_add.py due to missing package requirement: nvidia-cuda-nvrtc, cupy-cuda13x
SKIPPED [7] tests\test_utils.py:340: CuPy is not installed
SKIPPED [1] tests\test_utils.py:309: CuPy is not installed
SKIPPED [2] tests\test_utils.py:724: CuPy is not installed
SKIPPED [18] tests\test_utils.py:576: could not import 'cupy': No module named 'cupy'
SKIPPED [2] tests\test_utils.py:792: CuPy is not installed
SKIPPED [4] tests\test_utils.py:506: CuPy is not installed
SKIPPED [1] tests\test_utils.py:845: CuPy is not installed
SKIPPED [1] tests\test_utils.py:832: CuPy is not installed
SKIPPED [1] tests\test_utils.py:600: could not import 'cupy': No module named 'cupy'
SKIPPED [2] tests\test_utils.py:543: CuPy is not installed
SKIPPED [1] tests\test_utils.py:708: CuPy is not installed
=================================================================== 167 passed, 55 skipped in 2.18s ===================================================================