Traceback (most recent call last):
  File "/home/xavier/projectes/develop/tryton/tryton/gui/window/view_form/view/calendar_.py", line 95, in on_event_released
    goocalendar.update()
  File "/usr/local/lib/python2.7/dist-packages/goocalendar/_calendar.py", line 201, in update
    self.draw_events()
  File "/usr/local/lib/python2.7/dist-packages/goocalendar/_calendar.py", line 433, in draw_events
    events = self._event_store.get_events(start, end)
  File "/usr/local/lib/python2.7/dist-packages/goocalendar/_event.py", line 95, in get_events
    if util.event_intersects(event, start, end):
  File "/usr/local/lib/python2.7/dist-packages/goocalendar/util.py", line 92, in event_intersects
    return ((event.start >= start and event.start < end)
TypeError: can't compare datetime.datetime to datetime.date