Hello. In Prefect 1: Context: we have a flow of flows, and to manage dependencies, we have 2 solution. Either make sure the infra registers the flows in order, or to import and register the underlying flows in the flow-of-flows. What could go wrong if you do register a flow in the flow-of-flows like

from underlying_flows.flow_a import flow_a

flow_a.register(project...)

With Flow(...):
    ...

Because when we do that, prefect throws a warning

UserWarning: Attempting to call "flow.register" during execution of flow file will lead to unexpected results.

Hello Mansour, thank you for reaching out. I'm not 100% sure what could go wrong with registering a flow in a flow of flows like that (although I am sure one of my colleagues knows), but I can point you in the direction of this helpful article which shows how to schedule a flow-of-flows and managing their dependencies.

Thanks for the reference. However, my concern is registering the flows. This article starts after the flows are registered. When you have your infra-as-code in Terraform, managing the process of how to register flows becomes an important part to ensure everything works in all environments and regions.

Hello Mansour, thank you for clarifying. If you haven't done a significant amount work in 1.0, I would recommend using 2.0 for this very reason. It's much easier to construct a flow of flows, without having to register the individual child flows separate from the parent flow (the process of registration isn't even necessary in 2.0).