I have an AppConfig.ready() implementation which depends on the readiness of an other application.

Is there a signal or method (which I could implement) which gets called after all application ready() methods have been called?

I know that django processes the signals in the order of INSTALLED_APPS.

But I don't want to enforce a particular ordering of INSTALLED_APPS.

Example:

INSTALLED_APPS=[
   'app_a',
   'app_b',
   ...
]

How can "app_a" receive a signal (or method call) after "app_b" processed AppConfig.ready()?

(reordering INSTALLED_APPS is not a solution)