anchor.diff:        --replace "build.build.run(self)" "build.build.run(self); return"
     '';
   
  -  nativeBuildInputs = [ wrapQtAppsHook ];
  +  nativeBuildInputs = [
  +    wrapQtAppsHook
  +  ];
   
     propagatedBuildInputs = [
  -    pyface pygments numpy vtk traitsui envisage apptools pyqt5
  +    apptools
  +    envisage
  +    numpy
  +    pyface
  +    pygments
  +    pyqt5
  +    traitsui
  +    vtk
     ];
   
  -  doCheck = false; # Needs X server
  -  pythonImportsCheck = [ "mayavi" ];
  +  # Needs X server
  +  doCheck = false;
  +
  +  pythonImportsCheck = [
  +    "mayavi"
  +  ];
   
     preFixup = ''
       makeWrapperArgs+=("''${qtWrapperArgs[@]}")
  
positive.code:   meta = with lib; {
      description = "3D visualization of scientific data in Python";
      homepage = "https://github.com/enthought/mayavi";
      maintainers = with maintainers; [ knedlsepp ];
      license = licenses.bsdOriginal;
    };
  }
  
negative.code: { lib
  , apptools
  , buildPythonPackage
  , envisage
  , fetchPypi
  , numpy
  , pyface
  , pygments
  , pyqt5
  , pythonOlder
  , traitsui
  , vtk
  , wrapQtAppsHook
  }:
  
  buildPythonPackage rec {
    pname = "mayavi";
    version = "4.7.4";
    format = "setuptools";
  
    disabled = pythonOlder "3.8";
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "ec50e7ec6afb0f9224ad1863d104a0d1ded6c8deb13e720652007aaca2303332";
    };
  
  