anchor.diff:        is a simple build tool and does not perform any dependency management.
       '';
       homepage = "https://github.com/pypa/build";
  +    license = licenses.mit;
       maintainers = with maintainers; [ fab ];
  -    license = licenses.mit;
     };
   }
  
positive.code: , pytestCheckHook
  , pythonOlder
  , toml
  , typing ? null
  }:
  
  buildPythonPackage rec {
    pname = "build";
    version = "0.5.1";
    format = "pyproject";
  
    src = fetchFromGitHub {
      owner = "pypa";
      repo = pname;
      rev = version;
      sha256 = "15hc9mbxsngfc9n805x8rk7yqbxnw12mpk6hfwcsldnfii1vg2ph";
    };
  
    nativeBuildInputs = [
  
negative.code:   ];
  
    propagatedBuildInputs = [
      packaging
      pep517
      tomli
    ] ++ lib.optionals (pythonOlder "3.8") [
      importlib-metadata
    ];
  
    checkInputs = [
      filelock
      toml
      pytest-mock
      pytest-rerunfailures
      pytest-xdist
      pytestCheckHook
    ];
  
    pytestFlagsArray = [
      "-n"
      "$NIX_BUILD_CORES"
    ];
  
    disabledTests = [
      # Tests often fail with StopIteration
      "test_isolat"
      "test_default_pip_is_never_too_old"
      "test_build"
      "test_with_get_requires"
      "test_init"
      "test_output"
      "test_wheel_metadata"
    ] ++ lib.optionals stdenv.isDarwin [
      # Expects Apple's Python and its quirks
      "test_can_get_venv_paths_with_conflicting_default_scheme"
    ];
  
    pythonImportsCheck = [
      "build"
    ];
  
    meta = with lib; {
      description = "Simple, correct PEP517 package builder";
  