docs: def __install_eggs(self, config):
          """ Install eggs for a particular configuration """
          egg_carton = (self.directory.install_directory(self.feature_name),
                        'requirements.txt')
          eggs = self.__gather_eggs(config)
  
          self.logger.debug("Installing eggs %s..." % eggs)
          self.__load_carton(egg_carton, eggs)
  
          self.__prepare_eggs(egg_carton, config)