Pass effective destinations through import traversal

internal/engine/load_input.go

@@ -25,10 +25,12 @@ func assembleBaseInputTracked[T any](source Source, options Options[T], destinat
 	parseLimits := defaultParseLimits()
 	parseLimits.source.remaining = limits.bytes - accounting.bytes
 	parsed, diagnostics := parseSource(source, "source-"+strconv.Itoa(accounting.sources+1), parseLimits)
+	if parsed.source != nil {
+		parsed.source.Destination = destination.clone()
+	}
 	input := assembledInput{parsed: parsed, document: parsed.document}
 	if len(diagnostics) != 0 {
 		input.sources = sourceInfos(parsed.source)
-		setSourceDestinations(input.sources, destination)
 		// Mapping value issues already identify application content. Other early
 		// failures describe source syntax or access, not a placed value.
 		if source.kind == sourceMapping && source.mapIssue != nil && len(destination.segments) != 0 {
@@ -42,14 +44,12 @@ func assembleBaseInputTracked[T any](source Source, options Options[T], destinat
 	}
 	if options.Imports {
 		input.composition, input.sources, diagnostics = loadImportedDocumentsTracked(source, options.Filesystem, parsed, destination, options.Definition.Version, limits, accounting, visited, hostToken)
-		setSourceDestinations(input.sources, destination)
 		if len(diagnostics) != 0 {
 			return input, diagnostics
 		}
 		input.document = input.composition.root
 	} else {
 		input.sources = sourceInfos(parsed.source)
-		setSourceDestinations(input.sources, destination)
 		if options.Filesystem != nil && !activeOverlay(options.Overlay) {
 			if diagnostic := validateFilesystemContext(source, options.Filesystem, parsed); diagnostic != nil {
 				return input, []Diagnostic{*diagnostic}