def build_widgets(self):
self.machines_list = MachinesList(self.placement_controller,
self.display_controller,
None,
show_hardware=True,
show_assignments=False,
show_placeholders=False,
show_only_ready=True,
title_widgets=[])
self.machines_list.update()
self.machines_list_pile = Pile([self.machines_list, Divider()])
return self.machines_list_pile
