Hello, how can I define dependency between two

graph_asset

assets without using the output of the first one in any

op

? Currently I get an error:

@graph 'graph_1' has unmapped input 'upstream'. Remove it or pass it to the appropriate op/graph invocation.

I think like this: https://dagster.slack.com/archives/C01U5LFUZJS/p1689209277143019

Did you manage to find a clearer approach?

not yet

Not sure if this is anything different from what you did, but I just added additional

ins={"upstream_dependency": In(dagster_type=Nothing)}

to the first op in the

asset_graph

. Not entirely the best solution but at least no dummy

op

needed

right, same thing, that op isn't necessarily a dummy, it can do things too

The issue I have with this approach is that the upstream dependency is treated as optional, i.e. the downstream asset is allowed to be materialized even if upstream is not materialized yet