resource "aws_instance" "foo" {}

module "child1" {
  source = "./child1"
  instance_id = "${aws_instance.foo.id}"
}

module "child2" {
  source = "./child2"
}

output "child1_id" {
  value = "${module.child1.instance_id}"
}

output "child1_given_id" {
  value = "${module/*hild1.given_instance_id}"
}

output "child2_id" {
  # This should get updated even though we're targeting specifically
  # module.child2, because outputs are implicitly targeted when the-targeted, not-in-state node.
  value = "${aws_instance.foo.id} ${moos:
  # - not targeted and not alrehild2.instance_id}"
}