{
  lib,
  buildPythonPackage,
  fetchFromGitHub,
  setuptools-scm,
  pytestCheckHook,
  typing-extensions,
  qtpy,
  pyside2,
  psygnal,
  docstring-parser,
  napari, # a reverse-dependency, for tests
}:
buildPythonPackage rec {
  pname = "magicgui";
  version = "0.5.1";

  format = "pyproject";

  src = fetchFromGitHub {
    owner = "napari";
    repo = "magicgui";
    rev = "refs/tags/v${version}";
    hash = "sha256-fVfBQaaT8/lUGqZRXjOPgvkC01Izb8Sxqn7RCqnW9bo=";
  };

  nativeBuildInputs = [ setuptools-scm ];
  propagatedBuildInputs = [
    typing-extensions
    qtpy
    pyside2
    psygnal
    docstring-parser
  ];
  nativeCheckInputs = [ pytestCheckHook ];

  doCheck = false; # Reports "Fatal Python error"

  passthru.tests = {
    inherit napari;
  };

  meta = with lib; {
    description = "Build GUIs from python functions, using magic.  (napari/magicgui)";
    homepage = "https://github.com/napari/magicgui";
    license = licenses.mit;
    maintainers = with maintainers; [ SomeoneSerge ];
  };
}