Merge pull request #26784 from hashicorp/alisdair/only-show-root-module-output-changes

backend: Only show root module output changes

backend/local/backend_plan.go

@@ -314,8 +314,18 @@ func RenderPlan(plan *plans.Plan, baseState *states.State, schemas *terraform.Sc
 
 	// If there is at least one planned change to the root module outputs
 	// then we'll render a summary of those too.
-	if len(plan.Changes.Outputs) > 0 {
+	var changedRootModuleOutputs []*plans.OutputChangeSrc
-		ui.Output(colorize.Color("[reset]\n[bold]Changes to Outputs:[reset]" + format.OutputChanges(plan.Changes.Outputs, colorize)))
+	for _, output := range plan.Changes.Outputs {
+		if !output.Addr.Module.IsRoot() {
+			continue
+		}
+		if output.ChangeSrc.Action == plans.NoOp {
+			continue
+		}
+		changedRootModuleOutputs = append(changedRootModuleOutputs, output)
+	}
+	if len(changedRootModuleOutputs) > 0 {
+		ui.Output(colorize.Color("[reset]\n[bold]Changes to Outputs:[reset]" + format.OutputChanges(changedRootModuleOutputs, colorize)))
 	}
 }
 

backend/local/testdata/plan-outputs-changed/main.tf

@@ -1,3 +1,7 @@
+module "submodule" {
+  source = "./submodule"
+}
+
 output "changed" {
   value = "after"
 }

backend/local/testdata/plan-outputs-changed/submodule/main.tf

@@ -0,0 +1,3 @@
+output "foo" {
+  value = "bar"
+}