Is it possible to use interfaces in Celery task injections?

[pete0877]

I example here for the FastAPI version of what I'm looking to do.

I was hoping this would work, but it does not:

injector = DependencyInjector()
injector.bind({IExternalEmailImportService: ExternalEmailImportService})

@app.task(queue="external_email_import_queue")
def external_email_import_task(import_service: IExternalEmailImportService = PROVIDE):
     ...

IExternalEmailImportService is the interface.
ExternalEmailImportService is the implementation.

I can't seem to subscript PROVIDE like PROVIDE[IExternalEmailImportService] the way it is possible with Provide from magic_di.fastapi.

class IExternalEmailImportService(Protocol):
    @abstractmethod
    async def process(self):
        pass

class ExternalEmailImportService(Connectable):
    pass

.. and I tried this with ExternalEmailImportService inheriting from IExternalEmailImportService (as it should under normal circumstances, especially if I want to do type & method checking for the injeritance).