update build

Author: hauner

build.gradle

@@ -69,6 +69,10 @@ java {
     withSourcesJar ()
 }
 
+kotlin {
+    jvmToolchain(libs.versions.build.jdk.get() as Integer)
+}
+
 compileKotlin.dependsOn "generateVersion"
 
 compileTestGroovy {
@@ -144,7 +148,20 @@ tasks.named("dependencyUpdates").configure {
     }
 }
 
-tasks.withType(Test) {
+tasks.withType(Test).configureEach {
+    jvmArgs(
+        "--add-exports", "jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED",
+        "--add-exports", "jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED",
+        "--add-exports", "jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED",
+        "--add-exports", "jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED",
+        "--add-exports", "jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED",
+        "--add-exports", "jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED"
+    )
+
+    javaLauncher.set(javaToolchains.launcherFor {
+        languageVersion.set(JavaLanguageVersion.of(libs.versions.test.jdk.get()))
+    })
+
     finalizedBy jacocoTestReport
 }