Can I use RIBs Riblet in TCA?

[havilog]

I'm trying to migrate RIBs to TCA.

And I'm starting with a small feature.

everything looks fine.

but one of the last node(leaf node?) can't be migrated to tca, and remain RIBs.

so I tried to have last riblet to reducer's state like this

struct MyFeature: ReducerProtocol {
    struct State: Equatable {
        var builder: SomeBuilder?
    }
}

and I've found lot's of problems.

1. state can't be equatable cause of builder.
2. MyFeature can't conform SomeListener protocol because SomeListener is bounded to AnyObject
3. builder's dependency cannot be inferred
4. router cannot be attached as child tree

so I'd like to know if there's a great way I haven't come up with.