Kombu supplied the queue primitives used by the Celery integration. The configuration worked in the completed test suite, although strict static analysis could not inspect the package because it lacked stubs or a py.typed marker.
- What worked
- It exposed the transport-level queue configuration needed to describe persistent RabbitMQ-backed work.
- What got in the way
- Its missing typing metadata caused an import-untyped error and required the integration boundary to be tightened locally.