[Hermes][CI] Remove dual Hermes version outputs from CI workflows

.github/workflow-scripts/__tests__/createDraftRelease-test.js

@@ -144,10 +144,6 @@ Hermes dSYMS:
 - [Debug](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${version}/hermes-ios-${version}-hermes-framework-dSYM-debug.tar.gz)
 - [Release](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${version}/hermes-ios-${version}-hermes-framework-dSYM-release.tar.gz)
 
-Hermes V1 dSYMS:
-- [Debug](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${version}/hermes-ios-${version}-hermes-framework-dSYM-debug.tar.gz)
-- [Release](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${version}/hermes-ios-${version}-hermes-framework-dSYM-release.tar.gz)
-
 ReactNativeDependencies dSYMs:
 - [Debug](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-dependencies-dSYM-debug.tar.gz)
 - [Release](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-dependencies-dSYM-release.tar.gz)
@@ -172,7 +168,6 @@ View the whole changelog in the [CHANGELOG.md file](https://github.com/facebook/
     it('computes body for release when hermes versions are passed', async () => {
       const version = '0.77.1';
       const hermesVersion = '0.15.0';
-      const hermesV1Version = '250829098.0.2';
       const changelog = `## v${version}
 ### Breaking Changes
 - [PR #9012](https://github.com/facebook/react-native/pull/9012) - Some other change
@@ -188,7 +183,6 @@ View the whole changelog in the [CHANGELOG.md file](https://github.com/facebook/
         changelog,
         version,
         hermesVersion,
-        hermesV1Version,
       );
 
       expect(body).toEqual(`${changelog}
@@ -199,10 +193,6 @@ Hermes dSYMS:
 - [Debug](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${hermesVersion}/hermes-ios-${hermesVersion}-hermes-framework-dSYM-debug.tar.gz)
 - [Release](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${hermesVersion}/hermes-ios-${hermesVersion}-hermes-framework-dSYM-release.tar.gz)
 
-Hermes V1 dSYMS:
-- [Debug](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${hermesV1Version}/hermes-ios-${hermesV1Version}-hermes-framework-dSYM-debug.tar.gz)
-- [Release](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${hermesV1Version}/hermes-ios-${hermesV1Version}-hermes-framework-dSYM-release.tar.gz)
-
 ReactNativeDependencies dSYMs:
 - [Debug](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-dependencies-dSYM-debug.tar.gz)
 - [Release](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-dependencies-dSYM-release.tar.gz)

.github/workflow-scripts/createDraftRelease.js

@@ -40,9 +40,8 @@ function _extractChangelog(version) {
   return changelog.slice(changelogStarts, changelogEnds).join('\n').trim();
 }
 
-function _computeBody(changelog, version, hermesVersion, hermesV1Version) {
+function _computeBody(changelog, version, hermesVersion) {
   hermesVersion = hermesVersion ?? version;
-  hermesV1Version = hermesV1Version ?? version;
   return `${changelog}
 
 ---
@@ -51,10 +50,6 @@ Hermes dSYMS:
 - [Debug](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${hermesVersion}/hermes-ios-${hermesVersion}-hermes-framework-dSYM-debug.tar.gz)
 - [Release](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${hermesVersion}/hermes-ios-${hermesVersion}-hermes-framework-dSYM-release.tar.gz)
 
-Hermes V1 dSYMS:
-- [Debug](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${hermesV1Version}/hermes-ios-${hermesV1Version}-hermes-framework-dSYM-debug.tar.gz)
-- [Release](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${hermesV1Version}/hermes-ios-${hermesV1Version}-hermes-framework-dSYM-release.tar.gz)
-
 ReactNativeDependencies dSYMs:
 - [Debug](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-dependencies-dSYM-debug.tar.gz)
 - [Release](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-dependencies-dSYM-release.tar.gz)
@@ -128,7 +123,6 @@ async function createDraftRelease(
   latest,
   token,
   hermesVersion,
-  hermesV1Version,
 ) {
   if (version.startsWith('v')) {
     version = version.substring(1);
@@ -137,7 +131,7 @@ async function createDraftRelease(
   _verifyTagExists(version);
   moveToChangelogBranch(version);
   const changelog = _extractChangelog(version);
-  const body = _computeBody(changelog, version, hermesVersion, hermesV1Version);
+  const body = _computeBody(changelog, version, hermesVersion);
   const release = await _createDraftReleaseOnGitHub(
     version,
     body,

.github/workflows/create-draft-release.yml

@@ -6,11 +6,7 @@ on:
       hermesVersion:
         required: false
         type: string
-        description: The version of Hermes to use for this release (eg. 0.15.0). If not specified, it will use React Native Version
-      hermesV1Version:
-        required: false
-        type: string
-        description: The version of Hermes V1 to use for this release (eg. 250829098.0.2). If not specified, it will use React Native Version
+        description: The version of Hermes to use for this release (eg. 250829098.0.2). If not specified, it will use React Native Version
 
 jobs:
   create-draft-release:
@@ -37,7 +33,7 @@ jobs:
             const {createDraftRelease} = require('./.github/workflow-scripts/createDraftRelease.js');
             const version = '${{ github.ref_name }}';
             const {isLatest} = require('./.github/workflow-scripts/publishTemplate.js');
-            return (await createDraftRelease(version, isLatest(), '${{secrets.REACT_NATIVE_BOT_GITHUB_TOKEN}}', '${{ inputs.hermesVersion }}', '${{ inputs.hermesV1Version }}')).id;
+            return (await createDraftRelease(version, isLatest(), '${{secrets.REACT_NATIVE_BOT_GITHUB_TOKEN}}', '${{ inputs.hermesVersion }}')).id;
           result-encoding: string
       - name: Upload release assets for DotSlash
         uses: actions/github-script@v8

.github/workflows/prebuild-ios-core.yml

@@ -48,11 +48,9 @@ jobs:
         shell: bash
         run: |
           if [ "${{ inputs.use-hermes-nightly }}" == "true" ]; then
-            # We are not publishing nightly versions of Hermes V1 yet.
-            # For now, we can use the latest version of Hermes V1 published on maven and npm.
             HERMES_VERSION="latest-v1"
           else
-            HERMES_VERSION=$(sed -n 's/^HERMES_V1_VERSION_NAME=//p' packages/react-native/sdks/hermes-engine/version.properties)
+            HERMES_VERSION=$(sed -n 's/^HERMES_VERSION_NAME=//p' packages/react-native/sdks/hermes-engine/version.properties)
           fi
           echo "Using Hermes version: $HERMES_VERSION"
           echo "HERMES_VERSION=$HERMES_VERSION" >> $GITHUB_ENV

.github/workflows/publish-release.yml

@@ -24,22 +24,18 @@ jobs:
     if: github.repository == 'facebook/react-native'
     outputs:
       HERMES_VERSION: ${{ steps.set_hermes_versions.outputs.HERMES_VERSION }}
-      HERMES_V1_VERSION: ${{ steps.set_hermes_versions.outputs.HERMES_V1_VERSION }}
     steps:
       - name: Checkout
         uses: actions/checkout@v6
       - id: set_hermes_versions
         run: |
-          echo "Setting hermes versions to latest"
+          echo "Setting hermes version"
           hermes_version=$(grep -oE 'HERMES_VERSION_NAME=([0-9]+\.[0-9]+\.[0-9]+)' packages/react-native/sdks/hermes-engine/version.properties | cut -d'=' -f2)
-          hermes_v1_version=$(grep -oE 'HERMES_V1_VERSION_NAME=([0-9]+\.[0-9]+\.[0-9]+)' packages/react-native/sdks/hermes-engine/version.properties | cut -d'=' -f2)
 
           echo "HERMES_VERSION=$hermes_version" >> $GITHUB_OUTPUT
-          echo "HERMES_V1_VERSION=$hermes_v1_version" >> $GITHUB_OUTPUT
-      - name: Print hermes versions
+      - name: Print hermes version
         run: |
           echo "HERMES_VERSION=${{ steps.set_hermes_versions.outputs.HERMES_VERSION }}"
-          echo "HERMES_V1_VERSION=${{ steps.set_hermes_versions.outputs.HERMES_V1_VERSION }}"
 
   prebuild_apple_dependencies:
     if: github.repository == 'facebook/react-native'
@@ -148,4 +144,3 @@ jobs:
     secrets: inherit
     with:
       hermesVersion: ${{ needs.set_hermes_versions.outputs.HERMES_VERSION }}
-      hermesV1Version: ${{ needs.set_hermes_versions.outputs.HERMES_V1_VERSION }}

build.gradle.kts

@@ -118,7 +118,7 @@ if (project.findProperty("react.internal.useHermesStable")?.toString()?.toBoolea
   val hermesVersionPropertiesFile =
       rootProject.file("./packages/react-native/sdks/hermes-engine/version.properties")
   hermesVersionPropertiesFile.inputStream().use { hermesVersions.load(it) }
-  val selectedHermesVersion = hermesVersions["HERMES_V1_VERSION_NAME"] as String
+  val selectedHermesVersion = hermesVersions["HERMES_VERSION_NAME"] as String
 
   hermesSubstitution = selectedHermesVersion to "Users opted to use stable hermes release"
 } else if (
@@ -137,15 +137,7 @@ if (project.findProperty("react.internal.useHermesStable")?.toString()?.toBoolea
     )
   }
 
-  val hermesV1Enabled = project.findProperty("hermesV1Enabled")?.toString()?.toBoolean() ?: true
-  // Hermes V1 stable releases are published without the -SNAPSHOT suffix.
-  // Legacy nightly builds use -SNAPSHOT.
-  val resolvedVersion =
-      if (hermesV1Enabled) hermesCompilerVersion else "$hermesCompilerVersion-SNAPSHOT"
-  val reason =
-      if (hermesV1Enabled) "Users opted to use hermes V1 stable"
-      else "Users opted to use hermes nightly"
-  hermesSubstitution = resolvedVersion to reason
+  hermesSubstitution = hermesCompilerVersion to "Users opted to use hermes stable"
 } else {
   logger.warn(
       """

gradle.properties

@@ -24,6 +24,3 @@ react.internal.useHermesStable=false
 # Controls whether to use Hermes from nightly builds. This will speed up builds
 # but should NOT be turned on for CI or release builds.
 react.internal.useHermesNightly=true
-
-# Controls whether to use Hermes 1.0. Clean and rebuild when changing.
-hermesV1Enabled=true

packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/ReactPlugin.kt

@@ -28,7 +28,6 @@ import com.facebook.react.utils.DependencyUtils.readVersionAndGroupStrings
 import com.facebook.react.utils.JdkConfiguratorUtils.configureJavaToolChains
 import com.facebook.react.utils.JsonUtils
 import com.facebook.react.utils.NdkConfiguratorUtils.configureReactNativeNdk
-import com.facebook.react.utils.ProjectUtils.isHermesV1Enabled
 import com.facebook.react.utils.ProjectUtils.needsCodegenFromPackageJson
 import com.facebook.react.utils.findPackageJsonFile
 import java.io.File
@@ -55,10 +54,6 @@ class ReactPlugin : Plugin<Project> {
                 project,
             )
 
-    if (!project.rootProject.isHermesV1Enabled) {
-      rootExtension.hermesV1Enabled.set(false)
-    }
-
     // App Only Configuration
     project.pluginManager.withPlugin("com.android.application") {
       // We wire the root extension with the values coming from the app (either user populated or
@@ -75,8 +70,7 @@ class ReactPlugin : Plugin<Project> {
             File(reactNativeDir, "sdks/hermes-engine/version.properties")
         val versionAndGroupStrings =
             readVersionAndGroupStrings(project, propertiesFile, hermesVersionPropertiesFile)
-        val hermesV1Enabled = rootExtension.hermesV1Enabled.get()
-        configureDependencies(project, versionAndGroupStrings, hermesV1Enabled)
+        configureDependencies(project, versionAndGroupStrings)
         configureRepositories(project, versionAndGroupStrings.isNightly)
       }
 

packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/internal/PrivateReactExtension.kt

@@ -11,7 +11,6 @@ import javax.inject.Inject
 import org.gradle.api.Project
 import org.gradle.api.file.DirectoryProperty
 import org.gradle.api.provider.ListProperty
-import org.gradle.api.provider.Property
 
 /**
  * A private extension we set on the rootProject to make easier to share values at execution time
@@ -58,6 +57,4 @@ abstract class PrivateReactExtension @Inject constructor(project: Project) {
 
   val codegenDir: DirectoryProperty =
       objects.directoryProperty().convention(root.dir("node_modules/@react-native/codegen"))
-
-  val hermesV1Enabled: Property<Boolean> = objects.property(Boolean::class.java).convention(true)
 }