You could build something like this using Mangle datalog. The go implementation supports extension predicates that you can use for "federated querying", with filter pushdown. Or you could model your dependency graph and then query the paths and do something custom.

You could also build a fancier federated querying system that combines the two, taking a Mangle query and the analyzing and rewriting it. For that you're on your own though - I prefer developers hand-crafting something that fits their needs to a big convoluted framework that tries to be all things to all people.