old_contents: from django.conf import settings  # noqa
  from django.core.exceptions import ImproperlyConfigured
  from haystack import constants
  from haystack.management.commands import update_index as cmd
  from appconf import AppConf
  
  
  class CeleryHaystack(AppConf):
      #: The default alias to
      DEFAULT_ALIAS = None
      #: The delay (in seconds) before task will be executed (Celery countdown)
      COUNTDOWN = 0
      #: The delay (in seconds) after which a failed index is retried
      RETRY_DELAY = 5 * 60
      #: The number of retries that are done
      MAX_RETRIES = 1
      #: The default Celery task class
      DEFAULT_TASK = 'celery_haystack.tasks.CeleryHaystackSignalHandler'
      #: The name of the celery queue to use, or None for default
      QUEUE = None
      #: Whether the task should be handled transaction safe
      TRANSACTION_SAFE = True
  
      #: The batch size used by the CeleryHaystackUpdateIndex task
      COMMAND_BATCH_SIZE = None
      #: The max age of items used by the CeleryHaystackUpdateIndex task
      COMMAND_AGE = None
      #: Wehther to remove items from the index that aren't in the DB anymore
      COMMAND_REMOVE = False
      #: The number of multiprocessing workers used by the CeleryHaystackUpdateIndex task
      COMMAND_WORKERS = 0
      #: The names of apps to run update_index for
      COMMAND_APPS = []
      #: The verbosity level of the update_index call
      COMMAND_VERBOSITY = 1
  
      def configure_default_alias(self, value):
          return value or getattr(constants, 'DEFAULT_ALIAS', None)
  
      def configure_command_batch_size(self, value):
          return value or getattr(cmd, 'DEFAULT_BATCH_SIZE', None)
  
      def configure_command_age(self, value):
          return value or getattr(cmd, 'DEFAULT_AGE', None)
  
      def configure(self):
          data = {}
          for name, value in self.configured_data.items():
              if name in ('RETRY_DELAY', 'MAX_RETRIES',
                          'COMMAND_WORKERS', 'COMMAND_VERBOSITY'):
                  value = int(value)
              data[name] = value
          return data
  
  
  signal_processor = getattr(settings, 'HAYSTACK_SIGNAL_PROCESSOR', None)
  
  
  if signal_processor is None:
      raise ImproperlyConfigured("When using celery-haystack with Haystack 2.X "
                                 "the HAYSTACK_SIGNAL_PROCESSOR setting must be "
                                 "set. Use 'celery_haystack.signals."
                                 "CelerySignalProcessor' as default.")
  
new_contents: from django.conf import settings  # noqa
  from django.core.exceptions import ImproperlyConfigured
  from haystack import constants
  from haystack.management.commands import update_index as cmd
  from appconf import AppConf
  
  
  class CeleryHaystack(AppConf):
      #: The default alias to
      DEFAULT_ALIAS = None
      #: The delay (in seconds) before task will be executed (Celery countdown)
      COUNTDOWN = 0
      #: The delay (in seconds) after which a failed index is retried
      RETRY_DELAY = 5 * 60
      #: The number of retries that are done
      MAX_RETRIES = 1
      #: The default Celery task class
      DEFAULT_TASK = 'celery_haystack.tasks.CeleryHaystackSignalHandler'
      #: The name of the celery queue to use, or None for default
      QUEUE = None
      #: Whether the task should be handled transaction safe
      TRANSACTION_SAFE = True
  
      #: The batch size used by the CeleryHaystackUpdateIndex task
      COMMAND_BATCH_SIZE = None
      #: The max age of items used by the CeleryHaystackUpdateIndex task
      COMMAND_AGE = None
      #: Whether to remove items from the index that aren't in the DB anymore
      COMMAND_REMOVE = False
      #: The number of multiprocessing workers used by the CeleryHaystackUpdateIndex task
      COMMAND_WORKERS = 0
      #: The names of apps to run update_index for
      COMMAND_APPS = []
      #: The verbosity level of the update_index call
      COMMAND_VERBOSITY = 1
  
      def configure_default_alias(self, value):
          return value or getattr(constants, 'DEFAULT_ALIAS', None)
  
      def configure_command_batch_size(self, value):
          return value or getattr(cmd, 'DEFAULT_BATCH_SIZE', None)
  
      def configure_command_age(self, value):
          return value or getattr(cmd, 'DEFAULT_AGE', None)
  
      def configure(self):
          data = {}
          for name, value in self.configured_data.items():
              if name in ('RETRY_DELAY', 'MAX_RETRIES',
                          'COMMAND_WORKERS', 'COMMAND_VERBOSITY'):
                  value = int(value)
              data[name] = value
          return data
  
  
  signal_processor = getattr(settings, 'HAYSTACK_SIGNAL_PROCESSOR', None)
  
  
  if signal_processor is None:
      raise ImproperlyConfigured("When using celery-haystack with Haystack 2.X "
                                 "the HAYSTACK_SIGNAL_PROCESSOR setting must be "
                                 "set. Use 'celery_haystack.signals."
                                 "CelerySignalProcessor' as default.")
  
subject: fix comment typo