depot/third_party/nixpkgs/pkgs/development/python-modules/transitions/default.nix

{ lib
, stdenv
, buildPythonPackage
, fetchPypi
, fontconfig
, graphviz
, mock
, pycodestyle
, pygraphviz
, pytestCheckHook
, pythonAtLeast
, setuptools
, six
}:

buildPythonPackage rec {
  pname = "transitions";
  version = "0.9.0";
  pyproject = true;

  src = fetchPypi {
    inherit pname version;
    hash = "sha256-L1TRG9siV3nX5ykBHpOp+3F2aM49xl+NT1pde6L0jhA=";
  };

  build-system = [
    setuptools
  ];

  dependencies = [
    six
    pygraphviz # optional
  ];

  nativeCheckInputs = [
    pytestCheckHook
    mock
    graphviz
    pycodestyle
  ];

  preCheck = ''
    export FONTCONFIG_FILE=${fontconfig.out}/etc/fonts/fonts.conf
    export HOME=$TMPDIR
  '';

  disabledTests = [
    "test_diagram"
    "test_ordered_with_graph"
  ] ++ lib.optionals stdenv.isDarwin [
    # Upstream issue https://github.com/pygraphviz/pygraphviz/issues/441
    "test_binary_stream"
  ];

  pythonImportsCheck = [
    "transitions"
  ];

  meta = with lib; {
    homepage = "https://github.com/pytransitions/transitions";
    description = "A lightweight, object-oriented finite state machine implementation in Python";
    changelog = "https://github.com/pytransitions/transitions/releases/tag/${version}";
    license = licenses.mit;
    maintainers = with maintainers; [ dotlambda ];
  };
}