#!/usr/bin/env python3

import sys

import wx

class DummyApp(wx.App):
    """The application class."""

    def OnInit(self):
        """Main initialization routine."""
        super().OnInit()

        import gi
        gi.require_version('Gtk', '3.0')
        # Hangs here ->
        from gi.repository import Gtk, Gdk, Gio
        sys.exit(0)             # never reached

        return True


def main():
    # Spin up the GUI.
    app = DummyApp()
    app.MainLoop()


if __name__ == "__main__":
    main()