Seer uses a number of integrations. Those need to work with Span First from the get go.
I pulled this off of a random Seer error:
"argv","atexit","celery","dedupe","excepthook","fastapi","httpx","huggingface_hub","logging","modules","sqlalchemy","starlette","stdlib","threading","tornado"
Tornado is probably not actually used, it seems to have been pulled in via a dependency.