Build: Make ProGuard task cacheable

Exclude jdk files form libraries input. Instead add jdk major version
to inputs. JavaCompile task acts same to ignore fluctuations in JDK
implementations since api should remain same

libraries/tools/kotlin-main-kts/build.gradle.kts

@@ -8,6 +8,7 @@ plugins {
     id("jps-compatible")
 }
 
+val JDK_18: String by rootProject.extra
 val jarBaseName = property("archivesBaseName") as String
 
 val proguardLibraryJars by configurations.creating
@@ -31,9 +32,7 @@ dependencies {
     embedded(project(":kotlin-script-util")) { isTransitive = false }
     embedded("org.apache.ivy:ivy:2.5.0")
     embedded(commonDep("org.jetbrains.kotlinx", "kotlinx-coroutines-core")) { isTransitive = false }
-    proguardLibraryJars(files(firstFromJavaHomeThatExists("jre/lib/rt.jar", "../Classes/classes.jar"),
-                              firstFromJavaHomeThatExists("jre/lib/jsse.jar", "../Classes/jsse.jar"),
-                              toolsJarFile()))
+
     proguardLibraryJars(kotlinStdlib())
     proguardLibraryJars(project(":kotlin-reflect"))
     proguardLibraryJars(project(":kotlin-compiler"))
@@ -67,20 +66,23 @@ val relocatedJar by task<ShadowJar> {
     }
 }
 
-val proguard by task<ProGuardTask> {
+val proguard by task<CacheableProguardTask> {
     dependsOn(relocatedJar)
     configuration("main-kts.pro")
 
     injars(mapOf("filter" to "!META-INF/versions/**"), relocatedJar.get().outputs.files)
 
-    val outputJar = fileFrom(buildDir, "libs", "$jarBaseName-$version-after-proguard.jar")
-
-    outjars(outputJar)
-
-    inputs.files(relocatedJar.get().outputs.files.singleFile)
-    outputs.file(outputJar)
+    outjars(fileFrom(buildDir, "libs", "$jarBaseName-$version-after-proguard.jar"))
 
+    jdkHome = File(JDK_18)
     libraryjars(mapOf("filter" to "!META-INF/versions/**"), proguardLibraryJars)
+    libraryjars(
+        files(
+            firstFromJavaHomeThatExists("jre/lib/rt.jar", "../Classes/classes.jar", jdkHome = jdkHome!!),
+            firstFromJavaHomeThatExists("jre/lib/jsse.jar", "../Classes/jsse.jar", jdkHome = jdkHome!!),
+            toolsJarFile(jdkHome = jdkHome!!)
+        )
+    )
 }
 
 val resultJar by task<Jar> {
@@ -88,7 +90,7 @@ val resultJar by task<Jar> {
     dependsOn(pack)
     setupPublicJar(jarBaseName)
     from {
-        zipTree(pack.get().outputs.files.singleFile)
+        zipTree(pack.get().singleOutputFile())
     }
 }