Minimize Kotlin Standard library Option

gradle-plugins/compose/src/main/kotlin/org/jetbrains/compose/desktop/application/dsl/ProguardSettings.kt

@@ -24,4 +24,5 @@ abstract class ProguardSettings @Inject constructor(
     val obfuscate: Property<Boolean> = objects.notNullProperty(false)
     val optimize: Property<Boolean> = objects.notNullProperty(true)
     val joinOutputJars: Property<Boolean> = objects.notNullProperty(false)
+    val minimizeKotlinStandardLibrary: Property<Boolean> = objects.notNullProperty(false)
 }

gradle-plugins/compose/src/main/kotlin/org/jetbrains/compose/desktop/application/internal/configureJvmApplication.kt

@@ -267,6 +267,7 @@ private fun JvmApplicationContext.configureProguardTask(
     dontoptimize.set(settings.optimize.map { !it })
 
     joinOutputJars.set(settings.joinOutputJars)
+    minimizeKotlinStandardLibrary.set(settings.minimizeKotlinStandardLibrary)
 
     dependsOn(unpackDefaultResources)
     defaultComposeRulesFile.set(unpackDefaultResources.flatMap { it.resources.defaultComposeProguardRules })

gradle-plugins/compose/src/main/kotlin/org/jetbrains/compose/desktop/application/tasks/AbstractProguardTask.kt

@@ -42,6 +42,10 @@ abstract class AbstractProguardTask : AbstractComposeDesktopTask() {
     @get:Input
     val dontoptimize: Property<Boolean?> = objects.nullableProperty()
 
+    @get:Optional
+    @get:Input
+    val minimizeKotlinStandardLibrary: Property<Boolean?> = objects.nullableProperty()
+
     @get:Optional
     @get:Input
     val joinOutputJars: Property<Boolean?> = objects.nullableProperty()
@@ -125,6 +129,10 @@ abstract class AbstractProguardTask : AbstractComposeDesktopTask() {
                 writer.writeLn("-dontoptimize")
             }
 
+            if (minimizeKotlinStandardLibrary.orNull == false) {
+                writer.writeLn("-keep class kotlin.** { *; }")
+            }
+
             writer.writeLn("""
                 -keep public class ${mainClass.get()} {
                     public static void main(java.lang.String[]);

gradle-plugins/compose/src/main/resources/default-compose-desktop-rules.pro

@@ -1,4 +1,3 @@
--keep class kotlin.** { *; }
 -keep class org.jetbrains.skia.** { *; }
 -keep class org.jetbrains.skiko.** { *; }
 

tutorials/Native_distributions_and_local_execution/README.md

@@ -663,3 +663,16 @@ compose.desktop {
     }
 }
 ```
+
+Minimizing the Kotlin library is disabled by default.
+To minimize it, 
+set the following property via Gradle DSL:
+```
+compose.desktop {
+    application {
+        buildTypes.release.proguard {
+            minimizeKotlinStandardLibrary.set(true)
+        }
+    }
+}
+```