diff --git a/apex/apex.go b/apex/apex.go
index f49492e..32d7250 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -220,6 +220,13 @@
 	// imageApex or flattenedApex depending on Config.FlattenApex(). When payload_type is zip,
 	// this becomes zipApex.
 	ApexType apexPackaging `blueprint:"mutated"`
+
+	// Name that dependencies can specify in their apex_available properties to refer to this module.
+	// If not specified, this defaults to Soong module name. This must be the name of a Soong module.
+	Apex_available_name *string
+
+	// Variant version of the mainline module. Must be an integer between 0-9
+	Variant_version *string
 }
 
 type ApexNativeDependencies struct {
@@ -3134,6 +3141,13 @@
 		}
 
 		apexName := ctx.ModuleName()
+		for _, props := range ctx.Module().GetProperties() {
+			if apexProps, ok := props.(*apexBundleProperties); ok {
+				if apexProps.Apex_available_name != nil {
+					apexName = *apexProps.Apex_available_name
+				}
+			}
+		}
 		fromName := ctx.OtherModuleName(from)
 		toName := ctx.OtherModuleName(to)
 
@@ -3516,6 +3530,8 @@
 	Logging_parent        *string
 	Tests                 bazel.LabelListAttribute
 	Base_apex_name        *string
+	Apex_available_name   *string
+	Variant_version       *string
 }
 
 type convertedNativeSharedLibs struct {
@@ -3666,6 +3682,8 @@
 		Package_name:          packageName,
 		Logging_parent:        loggingParent,
 		Tests:                 testsAttrs,
+		Apex_available_name:   a.properties.Apex_available_name,
+		Variant_version:       a.properties.Variant_version,
 	}
 
 	props := bazel.BazelTargetModuleProperties{
diff --git a/apex/apex_test.go b/apex/apex_test.go
index 38e24e8..c781be4 100644
--- a/apex/apex_test.go
+++ b/apex/apex_test.go
@@ -6717,6 +6717,266 @@
 	}`)
 }
 
+func TestApexAvailable_ApexAvailableNameWithVersionCodeError(t *testing.T) {
+	t.Run("negative variant_version produces error", func(t *testing.T) {
+		testApexError(t, "expected an integer between 0-9; got -1", `
+			apex {
+				name: "myapex",
+				key: "myapex.key",
+				apex_available_name: "com.android.foo",
+				variant_version: "-1",
+				updatable: false,
+			}
+			apex_key {
+				name: "myapex.key",
+				public_key: "testkey.avbpubkey",
+				private_key: "testkey.pem",
+			}
+		`)
+	})
+
+	t.Run("variant_version greater than 9 produces error", func(t *testing.T) {
+		testApexError(t, "expected an integer between 0-9; got 10", `
+			apex {
+				name: "myapex",
+				key: "myapex.key",
+				apex_available_name: "com.android.foo",
+				variant_version: "10",
+				updatable: false,
+			}
+			apex_key {
+				name: "myapex.key",
+				public_key: "testkey.avbpubkey",
+				private_key: "testkey.pem",
+			}
+		`)
+	})
+}
+
+func TestApexAvailable_ApexAvailableNameWithVersionCode(t *testing.T) {
+	context := android.GroupFixturePreparers(
+		android.PrepareForIntegrationTestWithAndroid,
+		PrepareForTestWithApexBuildComponents,
+		android.FixtureMergeMockFs(android.MockFS{
+			"system/sepolicy/apex/foo-file_contexts": nil,
+			"system/sepolicy/apex/bar-file_contexts": nil,
+		}),
+	)
+	result := context.RunTestWithBp(t, `
+		apex {
+			name: "foo",
+			key: "myapex.key",
+			apex_available_name: "com.android.foo",
+			variant_version: "0",
+			updatable: false,
+		}
+		apex {
+			name: "bar",
+			key: "myapex.key",
+			apex_available_name: "com.android.foo",
+			variant_version: "3",
+			updatable: false,
+		}
+		apex_key {
+			name: "myapex.key",
+			public_key: "testkey.avbpubkey",
+			private_key: "testkey.pem",
+		}
+	`)
+
+	fooManifestRule := result.ModuleForTests("foo", "android_common_foo_image").Rule("apexManifestRule")
+	fooExpectedDefaultVersion := android.DefaultUpdatableModuleVersion
+	fooActualDefaultVersion := fooManifestRule.Args["default_version"]
+	if fooActualDefaultVersion != fooExpectedDefaultVersion {
+		t.Errorf("expected to find defaultVersion %q; got %q", fooExpectedDefaultVersion, fooActualDefaultVersion)
+	}
+
+	barManifestRule := result.ModuleForTests("bar", "android_common_bar_image").Rule("apexManifestRule")
+	defaultVersionInt, _ := strconv.Atoi(android.DefaultUpdatableModuleVersion)
+	barExpectedDefaultVersion := fmt.Sprint(defaultVersionInt + 3)
+	barActualDefaultVersion := barManifestRule.Args["default_version"]
+	if barActualDefaultVersion != barExpectedDefaultVersion {
+		t.Errorf("expected to find defaultVersion %q; got %q", barExpectedDefaultVersion, barActualDefaultVersion)
+	}
+}
+
+func TestApexAvailable_ApexAvailableName(t *testing.T) {
+	t.Run("using name of apex that sets apex_available_name is not allowed", func(t *testing.T) {
+		testApexError(t, "Consider adding \"myapex\" to 'apex_available' property of \"AppFoo\"", `
+			apex {
+				name: "myapex_sminus",
+				key: "myapex.key",
+				apps: ["AppFoo"],
+				apex_available_name: "myapex",
+				updatable: false,
+			}
+			apex {
+				name: "myapex",
+				key: "myapex.key",
+				apps: ["AppFoo"],
+				updatable: false,
+			}
+			apex_key {
+				name: "myapex.key",
+				public_key: "testkey.avbpubkey",
+				private_key: "testkey.pem",
+			}
+			android_app {
+				name: "AppFoo",
+				srcs: ["foo/bar/MyClass.java"],
+				sdk_version: "none",
+				system_modules: "none",
+				apex_available: [ "myapex_sminus" ],
+			}`,
+			android.FixtureMergeMockFs(android.MockFS{
+				"system/sepolicy/apex/myapex_sminus-file_contexts": nil,
+			}),
+		)
+	})
+
+	t.Run("apex_available_name allows module to be used in two different apexes", func(t *testing.T) {
+		testApex(t, `
+			apex {
+				name: "myapex_sminus",
+				key: "myapex.key",
+				apps: ["AppFoo"],
+				apex_available_name: "myapex",
+				updatable: false,
+			}
+			apex {
+				name: "myapex",
+				key: "myapex.key",
+				apps: ["AppFoo"],
+				updatable: false,
+			}
+			apex_key {
+				name: "myapex.key",
+				public_key: "testkey.avbpubkey",
+				private_key: "testkey.pem",
+			}
+			android_app {
+				name: "AppFoo",
+				srcs: ["foo/bar/MyClass.java"],
+				sdk_version: "none",
+				system_modules: "none",
+				apex_available: [ "myapex" ],
+			}`,
+			android.FixtureMergeMockFs(android.MockFS{
+				"system/sepolicy/apex/myapex_sminus-file_contexts": nil,
+			}),
+		)
+	})
+
+	t.Run("override_apexes work with apex_available_name", func(t *testing.T) {
+		testApex(t, `
+			override_apex {
+				name: "myoverrideapex_sminus",
+				base: "myapex_sminus",
+				key: "myapex.key",
+				apps: ["AppFooOverride"],
+			}
+			override_apex {
+				name: "myoverrideapex",
+				base: "myapex",
+				key: "myapex.key",
+				apps: ["AppFooOverride"],
+			}
+			apex {
+				name: "myapex_sminus",
+				key: "myapex.key",
+				apps: ["AppFoo"],
+				apex_available_name: "myapex",
+				updatable: false,
+			}
+			apex {
+				name: "myapex",
+				key: "myapex.key",
+				apps: ["AppFoo"],
+				updatable: false,
+			}
+			apex_key {
+				name: "myapex.key",
+				public_key: "testkey.avbpubkey",
+				private_key: "testkey.pem",
+			}
+			android_app {
+				name: "AppFooOverride",
+				srcs: ["foo/bar/MyClass.java"],
+				sdk_version: "none",
+				system_modules: "none",
+				apex_available: [ "myapex" ],
+			}
+			android_app {
+				name: "AppFoo",
+				srcs: ["foo/bar/MyClass.java"],
+				sdk_version: "none",
+				system_modules: "none",
+				apex_available: [ "myapex" ],
+			}`,
+			android.FixtureMergeMockFs(android.MockFS{
+				"system/sepolicy/apex/myapex_sminus-file_contexts": nil,
+			}),
+		)
+	})
+}
+
+func TestApexAvailable_ApexAvailableNameWithOverrides(t *testing.T) {
+	context := android.GroupFixturePreparers(
+		android.PrepareForIntegrationTestWithAndroid,
+		PrepareForTestWithApexBuildComponents,
+		java.PrepareForTestWithDexpreopt,
+		android.FixtureMergeMockFs(android.MockFS{
+			"system/sepolicy/apex/myapex-file_contexts":        nil,
+			"system/sepolicy/apex/myapex_sminus-file_contexts": nil,
+		}),
+		android.FixtureModifyProductVariables(func(variables android.FixtureProductVariables) {
+			variables.BuildId = proptools.StringPtr("buildid")
+		}),
+	)
+	context.RunTestWithBp(t, `
+	override_apex {
+		name: "myoverrideapex_sminus",
+		base: "myapex_sminus",
+	}
+	override_apex {
+		name: "myoverrideapex",
+		base: "myapex",
+	}
+	apex {
+		name: "myapex",
+		key: "myapex.key",
+		apps: ["AppFoo"],
+		updatable: false,
+	}
+	apex {
+		name: "myapex_sminus",
+		apex_available_name: "myapex",
+		key: "myapex.key",
+		apps: ["AppFoo_sminus"],
+		updatable: false,
+	}
+	apex_key {
+		name: "myapex.key",
+		public_key: "testkey.avbpubkey",
+		private_key: "testkey.pem",
+	}
+	android_app {
+		name: "AppFoo",
+		srcs: ["foo/bar/MyClass.java"],
+		sdk_version: "none",
+		system_modules: "none",
+		apex_available: [ "myapex" ],
+	}
+	android_app {
+		name: "AppFoo_sminus",
+		srcs: ["foo/bar/MyClass.java"],
+		sdk_version: "none",
+		min_sdk_version: "29",
+		system_modules: "none",
+		apex_available: [ "myapex" ],
+	}`)
+}
+
 func TestApexAvailable_CheckForPlatform(t *testing.T) {
 	ctx := testApex(t, `
 	apex {
diff --git a/apex/builder.go b/apex/builder.go
index 7c6522d..c691a33 100644
--- a/apex/builder.go
+++ b/apex/builder.go
@@ -275,6 +275,22 @@
 
 	manifestJsonFullOut := android.PathForModuleOut(ctx, "apex_manifest_full.json")
 	defaultVersion := android.DefaultUpdatableModuleVersion
+	if a.properties.Variant_version != nil {
+		defaultVersionInt, err := strconv.Atoi(defaultVersion)
+		if err != nil {
+			ctx.ModuleErrorf("expected DefaultUpdatableModuleVersion to be an int, but got %s", defaultVersion)
+		}
+		if defaultVersionInt%10 != 0 {
+			ctx.ModuleErrorf("expected DefaultUpdatableModuleVersion to end in a zero, but got %s", defaultVersion)
+		}
+		variantVersion := []rune(*a.properties.Variant_version)
+		if len(variantVersion) != 1 || variantVersion[0] < '0' || variantVersion[0] > '9' {
+			ctx.PropertyErrorf("variant_version", "expected an integer between 0-9; got %s", *a.properties.Variant_version)
+		}
+		defaultVersionRunes := []rune(defaultVersion)
+		defaultVersionRunes[len(defaultVersion)-1] = []rune(variantVersion)[0]
+		defaultVersion = string(defaultVersionRunes)
+	}
 	if override := ctx.Config().Getenv("OVERRIDE_APEX_MANIFEST_DEFAULT_VERSION"); override != "" {
 		defaultVersion = override
 	}
diff --git a/cmd/soong_ui/main.go b/cmd/soong_ui/main.go
index eea41e6..682fb75 100644
--- a/cmd/soong_ui/main.go
+++ b/cmd/soong_ui/main.go
@@ -242,9 +242,10 @@
 	soongMetricsFile := filepath.Join(logsDir, logsPrefix+"soong_metrics")
 	bp2buildMetricsFile := filepath.Join(logsDir, logsPrefix+"bp2build_metrics.pb")
 	soongBuildMetricsFile := filepath.Join(logsDir, logsPrefix+"soong_build_metrics.pb")
+	bazelMetricsFile := filepath.Join(logsDir, logsPrefix+"bazel_metrics.pb")
 
 	//Delete the stale metrics files
-	staleFileSlice := []string{buildErrorFile, rbeMetricsFile, soongMetricsFile, bp2buildMetricsFile, soongBuildMetricsFile}
+	staleFileSlice := []string{buildErrorFile, rbeMetricsFile, soongMetricsFile, bp2buildMetricsFile, soongBuildMetricsFile, bazelMetricsFile}
 	if err := deleteStaleMetrics(staleFileSlice); err != nil {
 		log.Fatalln(err)
 	}
diff --git a/shared/env.go b/shared/env.go
index b7d3baf..75190cc 100644
--- a/shared/env.go
+++ b/shared/env.go
@@ -55,20 +55,23 @@
 	return data, nil
 }
 
-// Reads and deserializes a Soong environment file located at the given file path to determine its
-// staleness. If any environment variable values have changed, it prints them out and returns true.
+// Reads and deserializes a Soong environment file located at the given file
+// path to determine its staleness. If any environment variable values have
+// changed, it prints and returns changed environment variable values and
+// returns true.
 // Failing to read or parse the file also causes it to return true.
-func StaleEnvFile(filepath string, getenv func(string) string) (bool, error) {
+func StaleEnvFile(filepath string, getenv func(string) string) (isStale bool,
+	changedEnvironmentVariable []string, err error) {
 	data, err := ioutil.ReadFile(filepath)
 	if err != nil {
-		return true, err
+		return true, nil, err
 	}
 
 	var contents envFileData
 
 	err = json.Unmarshal(data, &contents)
 	if err != nil {
-		return true, err
+		return true, nil, err
 	}
 
 	var changed []string
@@ -78,6 +81,7 @@
 		cur := getenv(key)
 		if old != cur {
 			changed = append(changed, fmt.Sprintf("%s (%q -> %q)", key, old, cur))
+			changedEnvironmentVariable = append(changedEnvironmentVariable, key)
 		}
 	}
 
@@ -86,10 +90,10 @@
 		for _, s := range changed {
 			fmt.Printf("   %s\n", s)
 		}
-		return true, nil
+		return true, changedEnvironmentVariable, nil
 	}
 
-	return false, nil
+	return false, nil, nil
 }
 
 // Deserializes and environment serialized by EnvFileContents() and returns it
diff --git a/tests/run_integration_tests.sh b/tests/run_integration_tests.sh
index db14bd4..c77b903 100755
--- a/tests/run_integration_tests.sh
+++ b/tests/run_integration_tests.sh
@@ -22,3 +22,6 @@
 "$TOP/build/soong/tests/apex_cc_module_arch_variant_tests.sh" "aosp_cf_arm64_phone" "armv8-a" "cortex-a53"
 
 "$TOP/build/soong/tests/sbom_test.sh"
+
+"$TOP/build/bazel/ci/b_test.sh"
+
diff --git a/ui/build/config.go b/ui/build/config.go
index 697cc66..bc0ab33 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -15,6 +15,7 @@
 package build
 
 import (
+	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -39,6 +40,9 @@
 const (
 	envConfigDir = "vendor/google/tools/soong_config"
 	jsonSuffix   = "json"
+
+	configFetcher         = "vendor/google/tools/soong/expconfigfetcher"
+	envConfigFetchTimeout = 10 * time.Second
 )
 
 var (
@@ -170,6 +174,87 @@
 	}
 }
 
+// fetchEnvConfig optionally fetches a configuration file that can then subsequently be
+// loaded into Soong environment to control certain aspects of build behavior (e.g., enabling RBE).
+// If a configuration file already exists on disk, the fetch is run in the background
+// so as to NOT block the rest of the build execution.
+func fetchEnvConfig(ctx Context, config *configImpl, envConfigName string) error {
+	configName := envConfigName + "." + jsonSuffix
+	expConfigFetcher := &smpb.ExpConfigFetcher{Filename: &configName}
+	defer func() {
+		ctx.Metrics.ExpConfigFetcher(expConfigFetcher)
+	}()
+	if !config.GoogleProdCredsExist() {
+		status := smpb.ExpConfigFetcher_MISSING_GCERT
+		expConfigFetcher.Status = &status
+		return nil
+	}
+
+	s, err := os.Stat(configFetcher)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return nil
+		}
+		return err
+	}
+	if s.Mode()&0111 == 0 {
+		status := smpb.ExpConfigFetcher_ERROR
+		expConfigFetcher.Status = &status
+		return fmt.Errorf("configuration fetcher binary %v is not executable: %v", configFetcher, s.Mode())
+	}
+
+	configExists := false
+	outConfigFilePath := filepath.Join(config.OutDir(), configName)
+	if _, err := os.Stat(outConfigFilePath); err == nil {
+		configExists = true
+	}
+
+	tCtx, cancel := context.WithTimeout(ctx, envConfigFetchTimeout)
+	fetchStart := time.Now()
+	cmd := exec.CommandContext(tCtx, configFetcher, "-output_config_dir", config.OutDir(),
+		"-output_config_name", configName)
+	if err := cmd.Start(); err != nil {
+		status := smpb.ExpConfigFetcher_ERROR
+		expConfigFetcher.Status = &status
+		return err
+	}
+
+	fetchCfg := func() error {
+		if err := cmd.Wait(); err != nil {
+			status := smpb.ExpConfigFetcher_ERROR
+			expConfigFetcher.Status = &status
+			return err
+		}
+		fetchEnd := time.Now()
+		expConfigFetcher.Micros = proto.Uint64(uint64(fetchEnd.Sub(fetchStart).Microseconds()))
+		expConfigFetcher.Filename = proto.String(outConfigFilePath)
+
+		if _, err := os.Stat(outConfigFilePath); err != nil {
+			status := smpb.ExpConfigFetcher_NO_CONFIG
+			expConfigFetcher.Status = &status
+			return err
+		}
+		status := smpb.ExpConfigFetcher_CONFIG
+		expConfigFetcher.Status = &status
+		return nil
+	}
+
+	// If a config file does not exist, wait for the config file to be fetched. Otherwise
+	// fetch the config file in the background and return immediately.
+	if !configExists {
+		defer cancel()
+		return fetchCfg()
+	}
+
+	go func() {
+		defer cancel()
+		if err := fetchCfg(); err != nil {
+			ctx.Verbosef("Failed to fetch config file %v: %v\n", configName, err)
+		}
+	}()
+	return nil
+}
+
 func loadEnvConfig(ctx Context, config *configImpl, bc string) error {
 	if bc == "" {
 		return nil
@@ -283,6 +368,9 @@
 	bc := os.Getenv("ANDROID_BUILD_ENVIRONMENT_CONFIG")
 
 	if bc != "" {
+		if err := fetchEnvConfig(ctx, ret, bc); err != nil {
+			ctx.Verbosef("Failed to fetch config file: %v\n", err)
+		}
 		if err := loadEnvConfig(ctx, ret, bc); err != nil {
 			ctx.Fatalln("Failed to parse env config files: %v", err)
 		}
diff --git a/ui/build/soong.go b/ui/build/soong.go
index 986ec70..b14208e 100644
--- a/ui/build/soong.go
+++ b/ui/build/soong.go
@@ -451,13 +451,17 @@
 	_ = bootstrap.RunBlueprint(blueprintArgs, bootstrap.DoEverything, blueprintCtx, blueprintConfig)
 }
 
-func checkEnvironmentFile(currentEnv *Environment, envFile string) {
+func checkEnvironmentFile(ctx Context, currentEnv *Environment, envFile string) {
 	getenv := func(k string) string {
 		v, _ := currentEnv.Get(k)
 		return v
 	}
 
-	if stale, _ := shared.StaleEnvFile(envFile, getenv); stale {
+	// Log the changed environment variables to ChangedEnvironmentVariable field
+	if stale, changedEnvironmentVariableList, _ := shared.StaleEnvFile(envFile, getenv); stale {
+		for _, changedEnvironmentVariable := range changedEnvironmentVariableList {
+			ctx.Metrics.AddChangedEnvironmentVariable(changedEnvironmentVariable)
+		}
 		os.Remove(envFile)
 	}
 }
@@ -502,26 +506,26 @@
 		ctx.BeginTrace(metrics.RunSoong, "environment check")
 		defer ctx.EndTrace()
 
-		checkEnvironmentFile(soongBuildEnv, config.UsedEnvFile(soongBuildTag))
+		checkEnvironmentFile(ctx, soongBuildEnv, config.UsedEnvFile(soongBuildTag))
 
 		if config.BazelBuildEnabled() || config.Bp2Build() {
-			checkEnvironmentFile(soongBuildEnv, config.UsedEnvFile(bp2buildFilesTag))
+			checkEnvironmentFile(ctx, soongBuildEnv, config.UsedEnvFile(bp2buildFilesTag))
 		}
 
 		if config.JsonModuleGraph() {
-			checkEnvironmentFile(soongBuildEnv, config.UsedEnvFile(jsonModuleGraphTag))
+			checkEnvironmentFile(ctx, soongBuildEnv, config.UsedEnvFile(jsonModuleGraphTag))
 		}
 
 		if config.Queryview() {
-			checkEnvironmentFile(soongBuildEnv, config.UsedEnvFile(queryviewTag))
+			checkEnvironmentFile(ctx, soongBuildEnv, config.UsedEnvFile(queryviewTag))
 		}
 
 		if config.ApiBp2build() {
-			checkEnvironmentFile(soongBuildEnv, config.UsedEnvFile(apiBp2buildTag))
+			checkEnvironmentFile(ctx, soongBuildEnv, config.UsedEnvFile(apiBp2buildTag))
 		}
 
 		if config.SoongDocs() {
-			checkEnvironmentFile(soongBuildEnv, config.UsedEnvFile(soongDocsTag))
+			checkEnvironmentFile(ctx, soongBuildEnv, config.UsedEnvFile(soongDocsTag))
 		}
 	}()
 
diff --git a/ui/metrics/metrics.go b/ui/metrics/metrics.go
index a282e20..6d60316 100644
--- a/ui/metrics/metrics.go
+++ b/ui/metrics/metrics.go
@@ -248,6 +248,13 @@
 	m.metrics.BuildCommand = proto.String(strings.Join(cmd, " "))
 }
 
+// AddChangedEnvironmentVariable adds the changed environment variable to
+// ChangedEnvironmentVariable field.
+func (m *Metrics) AddChangedEnvironmentVariable(ChangedEnvironmentVariable string) {
+	m.metrics.ChangedEnvironmentVariable = append(m.metrics.ChangedEnvironmentVariable,
+		ChangedEnvironmentVariable)
+}
+
 // Dump exports the collected metrics from the executed build to the file at
 // out path.
 func (m *Metrics) Dump(out string) error {
diff --git a/ui/metrics/metrics_proto/metrics.pb.go b/ui/metrics/metrics_proto/metrics.pb.go
index 32d4dc0..f3e677a 100644
--- a/ui/metrics/metrics_proto/metrics.pb.go
+++ b/ui/metrics/metrics_proto/metrics.pb.go
@@ -15,7 +15,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.30.0
-// 	protoc        v3.21.7
+// 	protoc        v3.21.12
 // source: metrics.proto
 
 package metrics_proto
@@ -420,6 +420,11 @@
 	Branch *string `protobuf:"bytes,32,opt,name=branch" json:"branch,omitempty"`
 	// The metric of critical path in build
 	CriticalPathInfo *CriticalPathInfo `protobuf:"bytes,33,opt,name=critical_path_info,json=criticalPathInfo" json:"critical_path_info,omitempty"`
+	// Environment variables that have changed value since the previous build,
+	// which were responsible for retriggering build analysis.
+	// Note that not all changed environment variables result in analysis retriggering.
+	// If there was no previous build, this list will be empty.
+	ChangedEnvironmentVariable []string `protobuf:"bytes,34,rep,name=changed_environment_variable,json=changedEnvironmentVariable" json:"changed_environment_variable,omitempty"`
 }
 
 // Default values for MetricsBase fields.
@@ -694,6 +699,13 @@
 	return nil
 }
 
+func (x *MetricsBase) GetChangedEnvironmentVariable() []string {
+	if x != nil {
+		return x.ChangedEnvironmentVariable
+	}
+	return nil
+}
+
 type BuildConfig struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1659,7 +1671,7 @@
 var file_metrics_proto_rawDesc = []byte{
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 }
 
 var (
diff --git a/ui/metrics/metrics_proto/metrics.proto b/ui/metrics/metrics_proto/metrics.proto
index 6db83e9..b437da7 100644
--- a/ui/metrics/metrics_proto/metrics.proto
+++ b/ui/metrics/metrics_proto/metrics.proto
@@ -131,6 +131,12 @@
 
   // The metric of critical path in build
   optional CriticalPathInfo critical_path_info = 33;
+
+  // Environment variables that have changed value since the previous build,
+  // which were responsible for retriggering build analysis.
+  // Note that not all changed environment variables result in analysis retriggering.
+  // If there was no previous build, this list will be empty.
+  repeated string changed_environment_variable = 34;
 }
 
 message BuildConfig {