old_contents: from moulinette.utils.log import getActionLogger
  from yunohost.app import app_fetchlist, app_removelist
  from yunohost.tools import Migration
  
  logger = getActionLogger('yunohost.migration')
  
  class MyMigration(Migration):
  
      "Migrate from official.json to apps.json"
  
      def migrate(self):
  
          # Remove official.json list
          app_removelist(name="yunohost")
  
          # Replace by apps.json list
          app_fetchlist(name="yunohost",
              url="https://app.yunohost.org/apps.json")
  
      def backward(self):
  
          # Remove apps.json list
          app_removelist(name="yunohost")
  
          # Replace by official.json list
          app_fetchlist(name="yunohost",
              url="https://app.yunohost.org/official.json")
  
new_contents: from moulinette.utils.log import getActionLogger
  from yunohost.app import app_fetchlist, app_removelist, _read_appslist_list
  from yunohost.tools import Migration
  
  logger = getActionLogger('yunohost.migration')
  
  class MyMigration(Migration):
  
      "Migrate from official.json to apps.json"
  
      def migrate(self):
  
          # Remove all the deprecated lists
          lists_to_remove = [
              "https://app.yunohost.org/official.json",
              "https://app.yunohost.org/community.json",
              "https://labriqueinter.net/apps/labriqueinternet.json"
          ]
  
          appslists = _read_appslist_list()
          for appslist, infos in appslists.items():
              if infos["url"] in lists_to_remove:
                  app_removelist(name=appslist)
  
          # Replace by apps.json list
          app_fetchlist(name="yunohost",
                        url="https://app.yunohost.org/apps.json")
  
      def backward(self):
  
          # Remove apps.json list
          app_removelist(name="yunohost")
  
          # Replace by official.json list
          app_fetchlist(name="yunohost",
              url="https://app.yunohost.org/official.json")
  
subject: Remove all deprecated lists, not just 'yunohost'