Merge pull request #583 from SimonMarquis/jvmToolchain

Configure jvmToolchain for Android and Kotlin projects

Author: mmoczkowski

build-logic/convention/src/main/kotlin/AndroidApplicationConventionPlugin.kt

@@ -18,6 +18,7 @@ import com.android.build.api.dsl.ApplicationExtension
 import com.google.samples.apps.nowinandroid.configureGradleManagedDevices
 import com.android.build.api.variant.ApplicationAndroidComponentsExtension
 import com.google.samples.apps.nowinandroid.configureKotlinAndroid
+import com.google.samples.apps.nowinandroid.configureKotlinAndroidToolchain
 import com.google.samples.apps.nowinandroid.configurePrintApksTask
 import org.gradle.api.Plugin
 import org.gradle.api.Project
@@ -31,6 +32,7 @@ class AndroidApplicationConventionPlugin : Plugin<Project> {
                 apply("org.jetbrains.kotlin.android")
             }
 
+            configureKotlinAndroidToolchain()
             extensions.configure<ApplicationExtension> {
                 configureKotlinAndroid(this)
                 defaultConfig.targetSdk = 33

build-logic/convention/src/main/kotlin/AndroidLibraryConventionPlugin.kt

@@ -19,6 +19,7 @@ import com.android.build.gradle.LibraryExtension
 import com.google.samples.apps.nowinandroid.configureFlavors
 import com.google.samples.apps.nowinandroid.configureGradleManagedDevices
 import com.google.samples.apps.nowinandroid.configureKotlinAndroid
+import com.google.samples.apps.nowinandroid.configureKotlinAndroidToolchain
 import com.google.samples.apps.nowinandroid.configurePrintApksTask
 import com.google.samples.apps.nowinandroid.disableUnnecessaryAndroidTests
 import org.gradle.api.Plugin
@@ -37,6 +38,7 @@ class AndroidLibraryConventionPlugin : Plugin<Project> {
                 apply("org.jetbrains.kotlin.android")
             }
 
+            configureKotlinAndroidToolchain()
             extensions.configure<LibraryExtension> {
                 configureKotlinAndroid(this)
                 defaultConfig.targetSdk = 33

build-logic/convention/src/main/kotlin/com/google/samples/apps/nowinandroid/KotlinAndroid.kt

@@ -20,10 +20,14 @@ import com.android.build.api.dsl.CommonExtension
 import org.gradle.api.JavaVersion
 import org.gradle.api.Project
 import org.gradle.api.artifacts.VersionCatalogsExtension
+import org.gradle.api.plugins.ExtensionAware
+import org.gradle.kotlin.dsl.configure
 import org.gradle.kotlin.dsl.dependencies
 import org.gradle.kotlin.dsl.getByType
 import org.gradle.kotlin.dsl.provideDelegate
 import org.gradle.kotlin.dsl.withType
+import org.jetbrains.kotlin.gradle.dsl.KotlinAndroidProjectExtension
+import org.jetbrains.kotlin.gradle.dsl.KotlinJvmOptions
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 /**
@@ -72,3 +76,16 @@ internal fun Project.configureKotlinAndroid(
         add("coreLibraryDesugaring", libs.findLibrary("android.desugarJdkLibs").get())
     }
 }
+
+fun CommonExtension<*, *, *, *>.kotlinOptions(block: KotlinJvmOptions.() -> Unit) {
+    (this as ExtensionAware).extensions.configure("kotlinOptions", block)
+}
+
+/**
+ * Configure Kotlin's jvm toolchain for Android projects
+ */
+internal fun Project.configureKotlinAndroidToolchain() {
+    extensions.configure<KotlinAndroidProjectExtension> {
+        jvmToolchain(11)
+    }
+}

core/model/build.gradle.kts

@@ -18,6 +18,10 @@ plugins {
     id("kotlin")
 }
 
+kotlin {
+    jvmToolchain(11)
+}
+
 dependencies {
     implementation(libs.kotlinx.datetime)
 }