Hey all, I have a question regarding S3 storage. I would like to store my flow (as python script) as S3 object, such that it could be easily retrieved and run from another agent (e.g. colleagues computer, cloud etc.). I noticed, that the flow script is not stored in s3, when I set

stored_as_script = True

which I tracked down to the implemenation of the S3 build() function that returns the storage object before uploading it to s3, when this variable is set to True.

def build(self) -> "Storage":
        """
        Build the S3 storage object by uploading Flows to an S3 bucket. This will upload
        all of the flows found in `storage.flows`. If there is an issue uploading to the
        S3 bucket an error will be logged.

        Returns:
            - Storage: an S3 object that contains information about how and where
                each flow is stored

        Raises:
            - botocore.ClientError: if there is an issue uploading a Flow to S3
        """
        self.run_basic_healthchecks()

        if self.stored_as_script:
            if not self.key:
                raise ValueError(
                    "A `key` must be provided to show where flow `.py` file is stored in S3."
                )
            return self
        ..

Also, I can register the flow with s3 storage and

stored_as_script = False

, but even though it appears in UI and has a corresponding s3 object, flow_runs are not executed.

Hey @Julian I just submitted a PR that will actually upload the script just as you intended on your initial attempt! https://github.com/PrefectHQ/prefect/pull/3482

Nice, thank you 😁