{ buildPythonPackage
, fetchFromGitHub
, lib
, numpy
, onnx
, pytestCheckHook
, pytorch
, typing-extensions
}:

buildPythonPackage rec {
  pname = "pytorch-pfn-extras";
  version = "0.5.6";

  src = fetchFromGitHub {
    owner = "pfnet";
    repo = pname;
    rev = "v${version}";
    sha256 = "1ch4vhz3zjanj5advqsj51yy7idrp8yvydvcg4ymwa3wsfjrx58g";
  };

  propagatedBuildInputs = [ numpy pytorch typing-extensions ];

  checkInputs = [ onnx pytestCheckHook ];

  pythonImportsCheck = [ "pytorch_pfn_extras" ];

  disabledTestPaths = [
    # Requires optuna which is currently (2022-02-16) marked as broken.
    "tests/pytorch_pfn_extras_tests/test_config_types.py"

    # Requires CUDA access which is not possible in the nix environment.
    "tests/pytorch_pfn_extras_tests/cuda_tests/test_allocator.py"
    "tests/pytorch_pfn_extras_tests/nn_tests/modules_tests/test_lazy_batchnorm.py"
    "tests/pytorch_pfn_extras_tests/nn_tests/modules_tests/test_lazy_conv.py"
    "tests/pytorch_pfn_extras_tests/nn_tests/modules_tests/test_lazy_linear.py"
    "tests/pytorch_pfn_extras_tests/nn_tests/modules_tests/test_lazy.py"
    "tests/pytorch_pfn_extras_tests/profiler_tests/test_record.py"
    "tests/pytorch_pfn_extras_tests/runtime_tests/test_to.py"
    "tests/pytorch_pfn_extras_tests/test_handler.py"
    "tests/pytorch_pfn_extras_tests/test_logic.py"
    "tests/pytorch_pfn_extras_tests/test_reporter.py"
    "tests/pytorch_pfn_extras_tests/training_tests/test_trainer.py"
    "tests/pytorch_pfn_extras_tests/utils_tests/test_checkpoint.py"
    "tests/pytorch_pfn_extras_tests/utils_tests/test_comparer.py"
    "tests/pytorch_pfn_extras_tests/utils_tests/test_new_comparer.py"
  ];

  meta = with lib; {
    description = "Supplementary components to accelerate research and development in PyTorch";
    homepage = "https://github.com/pfnet/pytorch-pfn-extras";
    license = licenses.mit;
    maintainers = with maintainers; [ samuela ];
  };
}