docs: def to_date(value, ctx):
      """
      Tries conversion of any value to a date
      """
      if isinstance(value, str):
          temporal = ctx.get_date_parser().auto(value)
          if temporal is not None:
              return to_date(temporal, ctx)
      elif type(value) == datetime.date:
          return value
      elif isinstance(value, datetime.datetime):
          return value.date()  # discard time
  
      raise EvaluationError("Can't convert '%s' to a date" % str(value))