In a ForEach reducer, how can a child reducer override its dependencies based on its state?

[GodL]

like this:
Reduce(core(:_:))
.forEach(.path, action: .path)
.dependency(.myDependency) { state in
if state.isPremium {
return PremiumService()
} else {
return FreeService()
}
}

[DominikGrodl]

I think you would need a ReducerReader introduced as a draft in this PR, and also to forgo the .forEach(.path, action: .path) and @Reducer macro and build the forEach yourself.

[GodL]

in the latest version of Swift Composable Architecture (TCA), ReducerReader no longer exists. and the foreach path is a navigation stack reducer

[DominikGrodl]

Yes, the PR I linked is a draft which was not merged to any version of TCA, you will need to copy it to your project if you find it helps you with your issue.

The forEach with path is a shorthand for navigation, but you can still use the normal ForEach with trailing closure to build the destination reducer.