Hello, I'm having issues with nesting graphs due to the uniqueness requirement for op names (related to https://github.com/dagster-io/dagster/issues/8013). I believe this is actually a bug, because it breaks the encapsulation that you'd get from nesting graphs. The op names should really be unique within a graph; instead dagster ignores the namespace provided by a graph, and checks that all names are unique in the whole repository.

Thanks for the report, I’ve responded to your issue and we can continue further discussion there.