Hey team - how does the --install-policy if-not-present pull in the proper versions? We have an ECS worker running

prefect worker start -t ecs -p ecs-worker-pool --install-policy if-not-present

Warning! Failed to load collection 'prefect_aws': ImportError: cannot import name 'deprecated_class' from 'prefect._internal.compatibility.deprecated' (/usr/local/lib/python3.10/site-packages/prefect/_internal/compatibility/deprecated.py)

@alex — do you have any insight here?

Our worker is using

prefecthq/prefect:2.14.13-python3.10

as the default image

I've seen this before

#caption "Kevin enters the chat" thor

Is there an updated image that will work with the updated prefect aws? I'm not sure I understand how

pip install prefect-aws && prefect worker start -t ecs -p ecs-worker-pool

would resolve the issue. The install policy should install all proper requirements and version right?

kind of. when prefect tries to install prefect-aws at worker start time, prefect is already running, so despite upgrading itself, the version that's trying to start the worker is still the old version 😵‍💫. if you're cool with using a different image, the newest image will install a worker's dependencies just fine with your original command

The

pip install prefect-aws && prefect worker start -t ecs -p ecs-worker-pool

seems to be stable for us. Thanks for the help Kevin - much appreciated!