trying out the navigation library I'm passing the NavController to most of my screens, but this seems to break

@Preview

feature, is. there something I could pass into a composable with preview as a NavController?

The stateless Composable could instead accept a function, for example

onNavigate: (String) -> Unit

You can just add a default value @Composable @Preview fun MyScreen(navController:NavController = rememberNavController){}

We specifically talk about avoiding passing the NavController down directly in the Testing part of the docs: https://developer.android.com/jetpack/compose/navigation#testing