5.0's generic prefetch fights with fetch_generic_relations

[gone]

I have a situation where I have three models that can be targets, and each one needs different optimizations.
An optimal prefetch looks like:

class MyActionManager(ActionManager):
    def get_queryset(self):
        prefetch_target = GenericPrefetch(
            "target", [
                Celebration.objects.select_related('type', 'user'),
                Milestone.objects.select_related('type', 'user'),
                Review.objects.select_related('author').prefetch_related('users', 'locations', 'teams')
            ]
        )

        prefetch_actor = GenericPrefetch(
            "actor", [
                User.objects.all(),
            ]
        )
        return MyActionQuerySet(self.model, using=self._db).prefetch_related(prefetch_actor).prefetch_related(prefetch_target)

If we add in fetch_generic_realtions before the prefetch it will break the generic prefetch behavior.

I think possibly the GFK QuerySet might be able to use GenericPrefetch?

[auvipy]

it would be easier if you can come with a draft PR with your idea