is it possible to define a viewmodel at the navigation root (of a nested graph) instead of the composable route (with hiltviewmodel, for example)? Or in that case is just better to pass it down from the activity? The goal would be to encapsulate the viewmodel into the specific navigation graph

Where the ViewModel is stored depends entirely on what ViewModelStoreOwner you pass into

viewModel

or

hiltViewModel

, so if you want it stored at the navigation graph level, pass it the

NavBackStackEntry

associated with that graph that you've retrieved via

navController.getBackStackEntry(yourGraphsRoute)

Interesting, I'm gonna try to do some experiments to explore the possibilities