Merge "release_config: add value_directories to artifact" into main
diff --git a/cmd/release_config/release_config_lib/release_config.go b/cmd/release_config/release_config_lib/release_config.go
index 6d71d93..adf0e62 100644
--- a/cmd/release_config/release_config_lib/release_config.go
+++ b/cmd/release_config/release_config_lib/release_config.go
@@ -192,6 +192,7 @@
 
 	workflowManual := rc_proto.Workflow(rc_proto.Workflow_MANUAL)
 	myDirsMap := make(map[int]bool)
+	myValueDirsMap := make(map[int]bool)
 	if isBuildPrefix && releasePlatformVersion != nil {
 		if MarshalValue(releasePlatformVersion.Value) != strings.ToUpper(config.Name) {
 			value := FlagValue{
@@ -226,6 +227,8 @@
 			config.PriorStagesMap[priorStage] = true
 		}
 		myDirsMap[contrib.DeclarationIndex] = true
+		// This path *could* provide a value for this release config.
+		myValueDirsMap[contrib.DeclarationIndex] = true
 		if config.AconfigFlagsOnly {
 			// AconfigFlagsOnly allows very very few build flag values, all of them are part of aconfig flags.
 			allowedFlags := map[string]bool{
@@ -243,10 +246,13 @@
 			if !ok {
 				return fmt.Errorf("Setting value for undefined flag %s in %s\n", name, value.path)
 			}
+			// Record that flag declarations from fa.DeclarationIndex were included in this release config.
 			myDirsMap[fa.DeclarationIndex] = true
+			// Do not set myValueDirsMap, since it just records that we *could* provide values here.
 			if fa.DeclarationIndex > contrib.DeclarationIndex {
 				// Setting location is to the left of declaration.
-				return fmt.Errorf("Setting value for flag %s not allowed in %s\n", name, value.path)
+				return fmt.Errorf("Setting value for flag %s (declared in %s) not allowed in %s\n",
+					name, filepath.Dir(configs.ReleaseConfigMaps[fa.DeclarationIndex].path), value.path)
 			}
 			if isRoot && *fa.FlagDeclaration.Workflow != workflowManual {
 				// The "root" release config can only contain workflow: MANUAL flags.
@@ -273,10 +279,14 @@
 	releaseAconfigValueSets.Value = &rc_proto.Value{Val: &rc_proto.Value_StringValue{strings.TrimSpace(strings.Join(myAconfigValueSets, " "))}}
 
 	directories := []string{}
+	valueDirectories := []string{}
 	for idx, confDir := range configs.configDirs {
 		if _, ok := myDirsMap[idx]; ok {
 			directories = append(directories, confDir)
 		}
+		if _, ok := myValueDirsMap[idx]; ok {
+			valueDirectories = append(valueDirectories, confDir)
+		}
 	}
 
 	// Now build the per-partition artifacts
@@ -316,6 +326,7 @@
 		AconfigValueSets: myAconfigValueSets,
 		Inherits:         myInherits,
 		Directories:      directories,
+		ValueDirectories: valueDirectories,
 		PriorStages:      SortedMapKeys(config.PriorStagesMap),
 	}
 
diff --git a/cmd/release_config/release_config_proto/build_flags_out.pb.go b/cmd/release_config/release_config_proto/build_flags_out.pb.go
index b246eb6..c63ea26 100644
--- a/cmd/release_config/release_config_proto/build_flags_out.pb.go
+++ b/cmd/release_config/release_config_proto/build_flags_out.pb.go
@@ -223,12 +223,18 @@
 	// The names of the release_config_artifacts from which we inherited.
 	// Included for reference only.
 	Inherits []string `protobuf:"bytes,5,rep,name=inherits" json:"inherits,omitempty"`
-	// The release config directories used for this config.
+	// The release config directories used for this config.  This includes
+	// directories that provide flag declarations, but do not provide any flag
+	// values specific to this release config.
 	// For example, "build/release".
 	Directories []string `protobuf:"bytes,6,rep,name=directories" json:"directories,omitempty"`
 	// Prior stage(s) for flag advancement (during development).
 	// Once a flag has met criteria in a prior stage, it can advance to this one.
 	PriorStages []string `protobuf:"bytes,7,rep,name=prior_stages,json=priorStages" json:"prior_stages,omitempty"`
+	// The release config directories that contribute directly to this release
+	// config.  The listed directories contain at least a `release_config` message
+	// for this release config.
+	ValueDirectories []string `protobuf:"bytes,8,rep,name=value_directories,json=valueDirectories" json:"value_directories,omitempty"`
 }
 
 func (x *ReleaseConfigArtifact) Reset() {
@@ -312,6 +318,13 @@
 	return nil
 }
 
+func (x *ReleaseConfigArtifact) GetValueDirectories() []string {
+	if x != nil {
+		return x.ValueDirectories
+	}
+	return nil
+}
+
 type ReleaseConfigsArtifact struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -412,7 +425,7 @@
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@@ -431,42 +444,44 @@
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 }
 
 var (
diff --git a/cmd/release_config/release_config_proto/build_flags_out.proto b/cmd/release_config/release_config_proto/build_flags_out.proto
index 2f1715b..4dc84e9 100644
--- a/cmd/release_config/release_config_proto/build_flags_out.proto
+++ b/cmd/release_config/release_config_proto/build_flags_out.proto
@@ -82,13 +82,20 @@
   // Included for reference only.
   repeated string inherits = 5;
 
-  // The release config directories used for this config.
+  // The release config directories used for this config.  This includes
+  // directories that provide flag declarations, but do not provide any flag
+  // values specific to this release config.
   // For example, "build/release".
   repeated string directories = 6;
 
   // Prior stage(s) for flag advancement (during development).
   // Once a flag has met criteria in a prior stage, it can advance to this one.
   repeated string prior_stages = 7;
+
+  // The release config directories that contribute directly to this release
+  // config.  The listed directories contain at least a `release_config` message
+  // for this release config.
+  repeated string value_directories = 8;
 }
 
 message release_configs_artifact {