feat: upgrade build environment to JDK 21 and centralize CI configuration

- Create a composite GitHub Action `gradle-setup` to encapsulate code checkout, wrapper validation, JDK 21 setup, and Gradle caching logic.
- Update all GitHub workflows (`publish-core`, `codeql`, `scheduled-updates`, `release`, etc.) to utilize the new centralized `gradle-setup` action.
- Upgrade the project's primary JDK requirement from 17 to 21 across `jitpack.yml`, workflow files, and build-logic conventions.
- Refactor `KotlinAndroid.kt` and `build.gradle.kts` to target JVM 21 for the application while maintaining JVM 17 compatibility for published library modules (`api`, `model`, `proto`).
- Introduce a new `build-desktop` job in `reusable-check.yml` to verify desktop artifact assembly during CI.
- Implement dynamic `cache_read_only` detection in workflows to optimize Gradle cache usage across different branch types and merge groups.
- Update project documentation (`GEMINI.md`, `AGENTS.md`, `CONTRIBUTING.md`) to reflect the JDK 21 requirement and provide guidance on Robolectric configuration for the new version.

.github/actions/gradle-setup/action.yml

@@ -0,0 +1,38 @@
+name: Gradle Setup
+description: Setup Java and Gradle for KMP builds
+inputs:
+  cache_read_only:
+    description: 'Whether Gradle cache is read-only'
+    default: 'true'
+  jdk_distribution:
+    description: 'JDK distribution (temurin or jetbrains)'
+    default: 'temurin'
+runs:
+  using: composite
+  steps:
+    - name: Checkout code
+      uses: actions/checkout@v6
+      with:
+        fetch-depth: 0
+        submodules: 'recursive'
+
+    - name: Validate Gradle Wrapper
+      uses: gradle/actions/wrapper-validation@v6
+
+    - name: Set up JDK 21
+      uses: actions/setup-java@v5
+      with:
+        java-version: '21'
+        distribution: ${{ inputs.jdk_distribution }}
+        token: ${{ github.token }}
+
+    - name: Setup Gradle
+      uses: gradle/actions/setup-gradle@v6
+      with:
+        cache-read-only: ${{ inputs.cache_read_only }}
+        cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTION_KEY }}
+        cache-cleanup: on-success
+        build-scan-publish: true
+        build-scan-terms-of-use-url: 'https://gradle.com/terms-of-service'
+        build-scan-terms-of-use-agree: 'yes'
+        add-job-summary: always

.github/copilot-instructions.md

@@ -8,7 +8,7 @@ For execution-focused recipes, see `docs/agent-playbooks/README.md`.
 Meshtastic-Android is a Kotlin Multiplatform (KMP) application for off-grid, decentralized mesh networks. The goal is to decouple business logic from the Android framework, enabling future expansion to iOS and other platforms while maintaining a high-performance native Android experience.
 
 - **Language:** Kotlin (primary), AIDL.
-- **Build System:** Gradle (Kotlin DSL). JDK 17 is REQUIRED.
+- **Build System:** Gradle (Kotlin DSL). JDK 21 is REQUIRED.
 - **Target SDK:** API 36. Min SDK: API 26 (Android 8.0).
 - **Flavors:**
   - `fdroid`: Open source only, no tracking/analytics.
@@ -99,7 +99,7 @@ Meshtastic-Android is a Kotlin Multiplatform (KMP) application for off-grid, dec
 ## 4. Execution Protocol
 
 ### A. Environment Setup
-1. **JDK 17 MUST be used** to prevent Gradle sync/build failures.
+1. **JDK 21 MUST be used** to prevent Gradle sync/build failures.
 2. **Secrets:** You must copy `secrets.defaults.properties` to `local.properties`:
    ```properties
    MAPS_API_KEY=dummy_key
@@ -128,7 +128,7 @@ Always run commands in the following order to ensure reliability. Do not attempt
 ./gradlew testFdroidDebug testGoogleDebug # Flavor-specific unit tests
 ./gradlew lintFdroidDebug lintGoogleDebug # Flavor-specific lint checks
 ```
-*Note: If testing Compose UI on the JVM (Robolectric) with Java 17, pin your tests to `@Config(sdk = [34])` to avoid SDK 35 compatibility crashes.*
+*Note: If testing Compose UI on the JVM (Robolectric) with Java 21, pin your tests to `@Config(sdk = [34])` to avoid SDK 35 compatibility crashes.*
 
 **CI workflow conventions (GitHub Actions):**
 - Reusable CI is split into a host job and an Android matrix job in `.github/workflows/reusable-check.yml`.
@@ -154,6 +154,6 @@ Update documentation continuously as part of the same change. If you modify arch
 ## 5. Troubleshooting
 -   **Build Failures:** Check `gradle/libs.versions.toml` for dependency conflicts.
 -   **Missing Secrets:** Check `local.properties`.
--   **JDK Version:** JDK 17 is required.
+-   **JDK Version:** JDK 21 is required.
 -   **Configuration Cache:** Add `--no-configuration-cache` flag if cache-related issues persist.
 -   **Koin Injection Failures:** Verify the KMP component is included in `app` root module wiring (`AppKoinModule`).

.github/workflows/codeql.yml

@@ -70,7 +70,7 @@ jobs:
       uses: actions/setup-java@v5
       with:
         distribution: 'temurin' # See 'Supported distributions' for available options
-        java-version: '17'
+        java-version: '21'
         token: ${{ github.token }}
 
     # Initializes the CodeQL tools for scanning.

.github/workflows/dependency-submission.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: actions/setup-java@v5
         with:
           distribution: temurin
-          java-version: 17
+          java-version: 21
           token: ${{ github.token }}
 
       - name: Generate and submit dependency graph

.github/workflows/docs.yml

@@ -47,15 +47,8 @@ jobs:
           submodules: 'recursive'
           ref: ${{ inputs.ref || '' }}
 
-      - name: Set up JDK 17
-        uses: actions/setup-java@v5
-        with:
-          java-version: '17'
-          distribution: 'temurin'
-          token: ${{ github.token }}
-
-      - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
+      - name: Gradle Setup
+        uses: ./.github/actions/gradle-setup
 
       - name: Build Dokka HTML documentation
         run: ./gradlew dokkaGeneratePublicationHtml

.github/workflows/publish-core.yml

@@ -23,19 +23,8 @@ jobs:
         with:
           submodules: 'recursive'
 
-      - name: Set up JDK 17
-        uses: actions/setup-java@v5
-        with:
-          java-version: '17'
-          distribution: 'temurin'
-          token: ${{ github.token }}
-
-      - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
-        with:
-          build-scan-publish: true
-          build-scan-terms-of-use-url: 'https://gradle.com/terms-of-service'
-          build-scan-terms-of-use-agree: 'yes'
+      - name: Gradle Setup
+        uses: ./.github/actions/gradle-setup
 
       - name: Configure Version
         id: version

.github/workflows/release.yml

@@ -119,25 +119,10 @@ jobs:
         -Dorg.gradle.workers.max=4
         -Dkotlin.daemon.jvm.options=-Xmx2g -XX:+UseParallelGC
     steps:
-      - name: Checkout code
-        uses: actions/checkout@v6
+      - name: Gradle Setup
+        uses: ./.github/actions/gradle-setup
         with:
-          ref: ${{ inputs.tag_name }}
-          fetch-depth: 0
-          submodules: 'recursive'
-      - name: Set up JDK 17
-        uses: actions/setup-java@v5
-        with:
-          java-version: '17'
-          distribution: 'temurin'
-          token: ${{ github.token }}
-      - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
-        with:
-          cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTION_KEY }}
-          build-scan-publish: true
-          build-scan-terms-of-use-url: 'https://gradle.com/terms-of-service'
-          build-scan-terms-of-use-agree: 'yes'
+          cache_read_only: 'false'
 
       - name: Load secrets
         env:
@@ -216,25 +201,10 @@ jobs:
         -Dorg.gradle.workers.max=4
         -Dkotlin.daemon.jvm.options=-Xmx2g -XX:+UseParallelGC
     steps:
-      - name: Checkout code
-        uses: actions/checkout@v6
+      - name: Gradle Setup
+        uses: ./.github/actions/gradle-setup
         with:
-          ref: ${{ inputs.tag_name }}
-          fetch-depth: 0
-          submodules: 'recursive'
-      - name: Set up JDK 17
-        uses: actions/setup-java@v5
-        with:
-          java-version: '17'
-          distribution: 'temurin'
-          token: ${{ github.token }}
-      - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
-        with:
-          cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTION_KEY }}
-          build-scan-publish: true
-          build-scan-terms-of-use-url: 'https://gradle.com/terms-of-service'
-          build-scan-terms-of-use-agree: 'yes'
+          cache_read_only: 'false'
 
       - name: Load secrets
         env:
@@ -288,27 +258,10 @@ jobs:
       GRADLE_CACHE_USERNAME: ${{ secrets.GRADLE_CACHE_USERNAME }}
       GRADLE_CACHE_PASSWORD: ${{ secrets.GRADLE_CACHE_PASSWORD }}
     steps:
-      - name: Checkout code
-        uses: actions/checkout@v6
+      - name: Gradle Setup
+        uses: ./.github/actions/gradle-setup
         with:
-          ref: ${{ inputs.tag_name }}
-          fetch-depth: 0
-          submodules: 'recursive'
-          
-      - name: Set up JDK 17
-        uses: actions/setup-java@v5
-        with:
-          java-version: '17'
-          distribution: 'temurin'
-          token: ${{ github.token }}
-
-      - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
-        with:
-          cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTION_KEY }}
-          build-scan-publish: true
-          build-scan-terms-of-use-url: 'https://gradle.com/terms-of-service'
-          build-scan-terms-of-use-agree: 'yes'
+          cache_read_only: 'false'
 
       - name: Install dependencies for AppImage
         if: runner.os == 'Linux'

.github/workflows/reusable-check.yml

@@ -58,34 +58,24 @@ jobs:
     permissions:
       contents: read
     timeout-minutes: 60
+    outputs:
+      cache_read_only: ${{ steps.cache_config.outputs.cache_read_only }}
 
     steps:
-      - name: Checkout code
-        uses: actions/checkout@v6
-        with:
-          fetch-depth: 0
-          submodules: 'recursive'
+      - name: Determine cache read-only setting
+        id: cache_config
+        shell: bash
+        run: |
+          if [[ "${{ github.ref }}" == "refs/heads/main" ]] || [[ "${{ github.event_name }}" == "merge_group" ]] || [[ "${{ github.ref }}" == gh-readonly-queue/* ]]; then
+            echo "cache_read_only=false" >> "$GITHUB_OUTPUT"
+          else
+            echo "cache_read_only=true" >> "$GITHUB_OUTPUT"
+          fi
 
-      - name: Validate Gradle Wrapper
-        uses: gradle/actions/wrapper-validation@v6
-
-      - name: Set up JDK 17
-        uses: actions/setup-java@v5
+      - name: Gradle Setup
+        uses: ./.github/actions/gradle-setup
         with:
-          java-version: '17'
-          distribution: 'temurin'
-          token: ${{ github.token }}
-
-      - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
-        with:
-          cache-read-only: ${{ github.ref != 'refs/heads/main' && github.event_name != 'merge_group' && !startsWith(github.ref, 'refs/heads/gh-readonly-queue/') }}
-          cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTION_KEY }}
-          cache-cleanup: on-success
-          build-scan-publish: true
-          build-scan-terms-of-use-url: 'https://gradle.com/terms-of-service'
-          build-scan-terms-of-use-agree: 'yes'
-          add-job-summary: always
+          cache_read_only: ${{ steps.cache_config.outputs.cache_read_only }}
 
       - name: Code Style & Static Analysis
         if: inputs.run_lint == true
@@ -138,38 +128,17 @@ jobs:
     permissions:
       contents: read
     timeout-minutes: 60
+    needs: host-check
     strategy:
       fail-fast: true
       matrix:
         api_level: ${{ fromJson(inputs.api_levels) }}
 
     steps:
-      - name: Checkout code
-        uses: actions/checkout@v6
+      - name: Gradle Setup
+        uses: ./.github/actions/gradle-setup
         with:
-          fetch-depth: 0
-          submodules: 'recursive'
-
-      - name: Validate Gradle Wrapper
-        uses: gradle/actions/wrapper-validation@v6
-
-      - name: Set up JDK 17
-        uses: actions/setup-java@v5
-        with:
-          java-version: '17'
-          distribution: 'temurin'
-          token: ${{ github.token }}
-
-      - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
-        with:
-          cache-read-only: ${{ github.ref != 'refs/heads/main' && github.event_name != 'merge_group' && !startsWith(github.ref, 'refs/heads/gh-readonly-queue/') }}
-          cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTION_KEY }}
-          cache-cleanup: on-success
-          build-scan-publish: true
-          build-scan-terms-of-use-url: 'https://gradle.com/terms-of-service'
-          build-scan-terms-of-use-agree: 'yes'
-          add-job-summary: always
+          cache_read_only: ${{ needs.host-check.outputs.cache_read_only }}
 
       - name: Determine matrix metadata
         id: matrix_meta
@@ -266,3 +235,28 @@ jobs:
             **/build/outputs/androidTest-results
           retention-days: 7
           if-no-files-found: ignore
+
+  build-desktop:
+    name: Build Desktop
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    timeout-minutes: 60
+    needs: host-check
+
+    steps:
+      - name: Gradle Setup
+        uses: ./.github/actions/gradle-setup
+        with:
+          cache_read_only: ${{ needs.host-check.outputs.cache_read_only }}
+
+      - name: Build Desktop
+        run: ./gradlew :desktop:assemble -Pci=true --scan
+
+      - name: Upload Desktop artifact
+        if: ${{ inputs.upload_artifacts }}
+        uses: actions/upload-artifact@v7
+        with:
+          name: desktop-app
+          path: desktop/build/libs/*.jar
+          retention-days: 7

.github/workflows/scheduled-updates.yml

@@ -81,21 +81,10 @@ jobs:
       - name: Fix file permissions
         run: sudo chown -R $USER:$USER .
 
-      - name: Set up JDK 17
-        uses: actions/setup-java@v5
+      - name: Gradle Setup
+        uses: ./.github/actions/gradle-setup
         with:
-          java-version: '17'
-          distribution: 'temurin'
-          token: ${{ github.token }}
-
-      - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
-        with:
-          cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTION_KEY }}
-          build-scan-publish: true
-          build-scan-terms-of-use-url: 'https://gradle.com/terms-of-service'
-          build-scan-terms-of-use-agree: 'yes'
-          add-job-summary: always
+          cache_read_only: 'false'
 
       - name: Update Graphs
         run: ./gradlew graphUpdate

AGENTS.md

@@ -8,7 +8,7 @@ For execution-focused recipes, see `docs/agent-playbooks/README.md`.
 Meshtastic-Android is a Kotlin Multiplatform (KMP) application for off-grid, decentralized mesh networks. The goal is to decouple business logic from the Android framework, enabling future expansion to iOS and other platforms while maintaining a high-performance native Android experience.
 
 - **Language:** Kotlin (primary), AIDL.
-- **Build System:** Gradle (Kotlin DSL). JDK 17 is REQUIRED.
+- **Build System:** Gradle (Kotlin DSL). JDK 21 is REQUIRED.
 - **Target SDK:** API 36. Min SDK: API 26 (Android 8.0).
 - **Flavors:**
   - `fdroid`: Open source only, no tracking/analytics.
@@ -100,7 +100,7 @@ Meshtastic-Android is a Kotlin Multiplatform (KMP) application for off-grid, dec
 ## 4. Execution Protocol
 
 ### A. Environment Setup
-1. **JDK 17 MUST be used** to prevent Gradle sync/build failures.
+1. **JDK 21 MUST be used** to prevent Gradle sync/build failures.
 2. **Secrets:** You must copy `secrets.defaults.properties` to `local.properties`:
    ```properties
    MAPS_API_KEY=dummy_key
@@ -129,7 +129,7 @@ Always run commands in the following order to ensure reliability. Do not attempt
 ./gradlew testFdroidDebug testGoogleDebug # Flavor-specific unit tests
 ./gradlew lintFdroidDebug lintGoogleDebug # Flavor-specific lint checks
 ```
-*Note: If testing Compose UI on the JVM (Robolectric) with Java 17, pin your tests to `@Config(sdk = [34])` to avoid SDK 35 compatibility crashes.*
+*Note: If testing Compose UI on the JVM (Robolectric) with Java 21, pin your tests to `@Config(sdk = [34])` to avoid SDK 35 compatibility crashes.*
 
 **CI workflow conventions (GitHub Actions):**
 - Reusable CI is split into a host job and an Android matrix job in `.github/workflows/reusable-check.yml`.
@@ -155,6 +155,6 @@ Update documentation continuously as part of the same change. If you modify arch
 ## 5. Troubleshooting
 -   **Build Failures:** Check `gradle/libs.versions.toml` for dependency conflicts.
 -   **Missing Secrets:** Check `local.properties`.
--   **JDK Version:** JDK 17 is required.
+-   **JDK Version:** JDK 21 is required.
 -   **Configuration Cache:** Add `--no-configuration-cache` flag if cache-related issues persist.
 -   **Koin Injection Failures:** Verify the KMP component is included in `app` root module wiring (`AppKoinModule`).

CONTRIBUTING.md

@@ -48,7 +48,7 @@ Meshtastic-Android uses unit tests, Robolectric JVM tests, and instrumented UI t
 
 - **Unit tests** are located in the `src/test/` directory of each module.
 - **Compose UI Tests (JVM)** are preferred for component testing and are also located in `src/test/` using **Robolectric**. 
-    - Note: If using Java 17, pin your Robolectric tests to `@Config(sdk = [34])` to avoid SDK 35 compatibility issues.
+    - Note: If using Java 21, pin your Robolectric tests to `@Config(sdk = [34])` to avoid SDK 35 compatibility issues.
 - **Instrumented tests** (including full E2E UI tests) are located in `src/androidTest/`. For Compose UI, use the [Jetpack Compose Testing APIs](https://developer.android.com/jetpack/compose/testing).
 
 #### Guidelines for Testing

GEMINI.md

@@ -8,7 +8,7 @@ For execution-focused recipes, see `docs/agent-playbooks/README.md`.
 Meshtastic-Android is a Kotlin Multiplatform (KMP) application for off-grid, decentralized mesh networks. The goal is to decouple business logic from the Android framework, enabling future expansion to iOS and other platforms while maintaining a high-performance native Android experience.
 
 - **Language:** Kotlin (primary), AIDL.
-- **Build System:** Gradle (Kotlin DSL). JDK 17 is REQUIRED.
+- **Build System:** Gradle (Kotlin DSL). JDK 21 is REQUIRED.
 - **Target SDK:** API 36. Min SDK: API 26 (Android 8.0).
 - **Flavors:**
   - `fdroid`: Open source only, no tracking/analytics.
@@ -96,7 +96,7 @@ Meshtastic-Android is a Kotlin Multiplatform (KMP) application for off-grid, dec
 ## 4. Execution Protocol
 
 ### A. Environment Setup
-1. **JDK 17 MUST be used** to prevent Gradle sync/build failures.
+1. **JDK 21 MUST be used** to prevent Gradle sync/build failures.
 2. **Secrets:** You must copy `secrets.defaults.properties` to `local.properties`:
    ```properties
    MAPS_API_KEY=dummy_key
@@ -125,7 +125,7 @@ Always run commands in the following order to ensure reliability. Do not attempt
 ./gradlew testFdroidDebug testGoogleDebug # Flavor-specific unit tests
 ./gradlew lintFdroidDebug lintGoogleDebug # Flavor-specific lint checks
 ```
-*Note: If testing Compose UI on the JVM (Robolectric) with Java 17, pin your tests to `@Config(sdk = [34])` to avoid SDK 35 compatibility crashes.*
+*Note: If testing Compose UI on the JVM (Robolectric) with Java 21, pin your tests to `@Config(sdk = [34])` to avoid SDK 35 compatibility crashes.*
 
 **CI workflow conventions (GitHub Actions):**
 - Reusable CI is split into a host job and an Android matrix job in `.github/workflows/reusable-check.yml`.
@@ -151,6 +151,6 @@ Update documentation continuously as part of the same change. If you modify arch
 ## 5. Troubleshooting
 -   **Build Failures:** Check `gradle/libs.versions.toml` for dependency conflicts.
 -   **Missing Secrets:** Check `local.properties`.
--   **JDK Version:** JDK 17 is required.
+-   **JDK Version:** JDK 21 is required.
 -   **Configuration Cache:** Add `--no-configuration-cache` flag if cache-related issues persist.
 -   **Koin Injection Failures:** Verify the KMP component is included in `app` root module wiring (`AppKoinModule`).

build-logic/convention/build.gradle.kts

@@ -25,14 +25,14 @@ plugins {
 
 group = "org.meshtastic.buildlogic"
 
-// Configure the build-logic plugins to target JDK 17
+// Configure the build-logic plugins to target JDK 21
 // This improves compatibility for developers building the project or consuming its libraries.
 java {
-    sourceCompatibility = JavaVersion.VERSION_17
-    targetCompatibility = JavaVersion.VERSION_17
+    sourceCompatibility = JavaVersion.VERSION_21
+    targetCompatibility = JavaVersion.VERSION_21
 }
 
-kotlin { compilerOptions { jvmTarget = JvmTarget.JVM_17 } }
+kotlin { compilerOptions { jvmTarget = JvmTarget.JVM_21 } }
 
 dependencies {
     // This allows the use of the 'libs' type-safe accessor in the Kotlin source of the plugins

build-logic/convention/src/main/kotlin/org/meshtastic/buildlogic/KotlinAndroid.kt

@@ -49,8 +49,13 @@ internal fun Project.configureKotlinAndroid(commonExtension: CommonExtension) {
             defaultConfig.targetSdk = targetSdkVersion
         }
 
-        compileOptions.sourceCompatibility = JavaVersion.VERSION_17
-        compileOptions.targetCompatibility = JavaVersion.VERSION_17
+        val javaVersion = if (project.name in listOf("api", "model", "proto")) {
+            JavaVersion.VERSION_17
+        } else {
+            JavaVersion.VERSION_21
+        }
+        compileOptions.sourceCompatibility = javaVersion
+        compileOptions.targetCompatibility = javaVersion
     }
 
     configureMokkery()
@@ -170,9 +175,10 @@ internal fun Project.configureKotlinJvm() {
 /** Configure base Kotlin options */
 private inline fun <reified T : KotlinBaseExtension> Project.configureKotlin() {
     extensions.configure<T> {
-        // Using Java 17 for better compatibility with consumers (e.g. plugins, older environments)
-        // while still supporting modern Kotlin features.
-        jvmToolchain(17)
+        val javaVersion = if (project.name in listOf("api", "model", "proto")) 17 else 21
+        // Using Java 17 for published modules for better compatibility with consumers (e.g. plugins, older environments),
+        // and Java 21 for the rest of the app.
+        jvmToolchain(javaVersion)
 
         if (this is KotlinMultiplatformExtension) {
             targets.configureEach {
@@ -201,7 +207,8 @@ private inline fun <reified T : KotlinBaseExtension> Project.configureKotlin() {
 
     tasks.withType<KotlinCompile>().configureEach {
         compilerOptions {
-            jvmTarget.set(JvmTarget.JVM_17)
+            val isPublishedModule = project.name in listOf("api", "model", "proto")
+            jvmTarget.set(if (isPublishedModule) JvmTarget.JVM_17 else JvmTarget.JVM_21)
             allWarningsAsErrors.set(warningsAsErrors)
             freeCompilerArgs.addAll(
                 // Enable experimental coroutines APIs, including Flow

jitpack.yml

@@ -1,5 +1,5 @@
 jdk:
-  - openjdk17
+  - openjdk21
 before_install:
   - ./gradlew --stop
 install: