ObservableStore of a primitive state

[maxkazakov]

Hey! I'm migrating from ViewStore to ObservableState. One of my views used to work with ViewStore<Int, Action>. But apparently, replacing it with Store<Int, Action> is impossible because I cannot make Int be ObservableState. I'm here to confirm that I'm not missing anything.

I could in theory use a Store with a State type that holds that Int instead, but the Int I have is enum associated value which makes things more complicated. Here's the code that I'm trying to migrate:

public enum FinishType {
    case byDuration(seconds: Int)
    case byDistance(meters: Double)
    case byTappingButton
}

SwitchStore(self.store.scope(state: \.finishType, action: \.self)) {
    switch $0 {
    case .byDuration:
        CaseLet(state: /FinishType.byDuration,
                then: { (store: Store<Int, IntervalFeature.Action>) in
            WithViewStore(store, observe: { $0 }) { viewStore in
                TimePickerView(title: "Time", viewStore: viewStore)
            }
        })
    case .byDistance:
        CaseLet(state: /FinishType.byDistance,
                then: { (store: Store<Double, IntervalFeature.Action>) in
            WithViewStore(store, observe: { $0 }) { viewStore in
                DistancePickerView(viewStore: viewStore)
            }
        })
    case .byTappingButton:
        EmptyView()
    }
}