{
  lib,
  buildPythonPackage,
  isPy27,
  fetchPypi,
  pythonOlder,
  setuptools,
  importlib-metadata,
  pytestCheckHook,
}:

buildPythonPackage rec {
  pname = "exdown";
  version = "0.9.0";
  format = "pyproject";

  disabled = isPy27;

  src = fetchPypi {
    inherit pname version;
    hash = "sha256-r0SCigkUpOiba4MDf80+dLjOjjruVNILh/raWfvjXA0=";
  };

  nativeBuildInputs = [ setuptools ];

  propagatedBuildInputs = lib.optionals (pythonOlder "3.8") [ importlib-metadata ];

  nativeCheckInputs = [ pytestCheckHook ];

  pythonImportsCheck = [ "exdown" ];

  meta = with lib; {
    description = "Extract code blocks from markdown";
    homepage = "https://github.com/nschloe/exdown";
    license = licenses.mit;
    maintainers = with maintainers; [ ];
  };
}