old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  #
  # Copyright 2016 GoPro Inc.
  #
  # Licensed to the Apache Software Foundation (ASF) under one
  # or more contributor license agreements.  See the NOTICE file
  # distributed with this work for additional information
  # regarding copyright ownership.  The ASF licenses this file
  # to you under the Apache License, Version 2.0 (the
  # "License"); you may not use this file except in compliance
  # with the License.  You may obtain a copy of the License at
  #
  #   http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing,
  # software distributed under the License is distributed on an
  # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, either express or implied.  See the License for the
  # specific language governing permissions and limitations
  # under the License.
  #
  
  import sys
  
  from PyQt5 import QtWidgets, QtCore
  
  from ui.main_window import MainWindow
  
  
  def run():
      import argparse
  
      parser = argparse.ArgumentParser()
      parser.add_argument('-m', dest='module', default='pynodegl_utils.examples',
                          help='set the module name containing the scene functions')
      parser.add_argument('-a', dest='assets_dir',
                          help='set the assets directory to be used by the scene functions')
      parser.add_argument('--hooks-dir', dest='hooksdir',
                          help='set the directory path containing event hooks')
      pargs = parser.parse_args(sys.argv[1:])
  
      app = QtWidgets.QApplication(sys.argv)
      # Fixes ui freezes with the native gl view on macos 10.14 (mojave)
      app.setAttribute(QtCore.Qt.AA_DontCreateNativeWidgetSiblings)
      window = MainWindow(pargs.module, pargs.assets_dir, pargs.hooksdir)
      window.show()
      app.exec_()
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  #
  # Copyright 2016 GoPro Inc.
  #
  # Licensed to the Apache Software Foundation (ASF) under one
  # or more contributor license agreements.  See the NOTICE file
  # distributed with this work for additional information
  # regarding copyright ownership.  The ASF licenses this file
  # to you under the Apache License, Version 2.0 (the
  # "License"); you may not use this file except in compliance
  # with the License.  You may obtain a copy of the License at
  #
  #   http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing,
  # software distributed under the License is distributed on an
  # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, either express or implied.  See the License for the
  # specific language governing permissions and limitations
  # under the License.
  #
  
  import sys
  
  from PyQt5 import QtWidgets, QtCore
  
  from ui.main_window import MainWindow
  
  
  def run():
      import argparse
  
      parser = argparse.ArgumentParser()
      parser.add_argument('-m', dest='module', default='pynodegl_utils.examples',
                          help='set the module name containing the scene functions')
      parser.add_argument('-a', dest='assets_dir',
                          help='set the assets directory to be used by the scene functions')
      parser.add_argument('--hooks-dir', dest='hooksdir',
                          help='set the directory path containing event hooks')
      pargs = parser.parse_args(sys.argv[1:])
  
      app = QtWidgets.QApplication(sys.argv)
      window = MainWindow(pargs.module, pargs.assets_dir, pargs.hooksdir)
      window.show()
      app.exec_()
  
subject: remove now unnecessary macOS specific hack