old_contents: """Check updates to Arch Linux.
  
  Requires the following executable:
      * checkupdates (from pacman-contrib)
  
  """
  import core.module
  import core.widget
  import core.decorators
  
  import util.cli
  
  class Module(core.module.Module):
      @core.decorators.every(minutes=60)
      def __init__(self, config, theme):
          super().__init__(config, theme, core.widget.Widget(self.utilization))
          self.__packages = None
  
      @property
      def __format(self):
          return self.parameter('format', 'Update Arch: {}')
  
      def utilization(self, widget):
          return self.__format.format(self.__packages)
  
      def hidden(self):
          return self.check_updates() == 0
  
      def update(self):
          result = util.cli.execute('checkupdates')
          self.__packages = len(result.split('\n')) - 1
  
      def state(self, widget):
          return self.threshold_state(self.__packages, 1, 100)
  
  # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
  
new_contents: """Check updates to Arch Linux.
  
  Requires the following executable:
      * checkupdates (from pacman-contrib)
  
  """
  import core.module
  import core.widget
  import core.decorators
  
  import util.cli
  
  class Module(core.module.Module):
      @core.decorators.every(minutes=60)
      def __init__(self, config, theme):
          super().__init__(config, theme, core.widget.Widget(self.utilization))
          self.__packages = 0
  
      @property
      def __format(self):
          return self.parameter('format', 'Update Arch: {}')
  
      def utilization(self, widget):
          return self.__format.format(self.__packages)
  
      def hidden(self):
          return self.__packages == 0
  
      def update(self):
          result = util.cli.execute('checkupdates')
          self.__packages = len(result.split('\n')) - 1
  
      def state(self, widget):
          return self.threshold_state(self.__packages, 1, 100)
  
  # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
  
subject: Fix missing check_updates()