python3Packages.pyamttings: fix cuda build

  pyopencl,

  # tests

  pocl,

  pytestCheckHook,

  writableTmpDirAsHomeHook,

  config,

  cudaSupport ? config.cudaSupport,

  pythonImportsCheck = [ "pymatting" ];

  nativeCheckInputs = [ pytestCheckHook ];

  nativeCheckInputs = [

    pytestCheckHook

  ]

  ++ lib.optionals cudaSupport [

    # Provides a CPU-based OpenCL ICD so that pyopencl's module-level

    # cl.create_some_context() succeeds without GPU hardware.

    pocl

    # pocl needs a writable $HOME for its kernel cache directory.

    writableTmpDirAsHomeHook

  ];

  disabledTests = [

    # no access to input data set

  ];

  disabledTestPaths = lib.optionals cudaSupport [

    # pyopencl._cl.LogicError: clGetPlatformIDs failed: PLATFORM_NOT_FOUND_KHR

    # Requires a CUDA driver for cupy GPU operations

    "tests/test_foreground.py"

  ];