}
	var edges []edge

	// List of packages that are ready to schedule. We use a lexicographic
	// ordered heap to pick the lexically earliest uninitialized but
	// inititalizeable package at each step.
	var h lexHeap

	// m maps from an inittask symbol for package p to the number of
	// p's direct imports that have not yet been scheduled.
	m := map[loader.Sym]int{}

	// Find all reachable inittask records from the roots.