Fix resolution of jmhRuntimeClasspath configurations

Author: marcphilipp

gradle/plugins/common/src/main/kotlin/junitbuild.java-library-conventions.gradle.kts

@@ -255,12 +255,12 @@ tasks {
 }
 
 afterEvaluate {
-	java {
-		// For Groovy and Shadow plugins
-		sourceCompatibility = extension.mainJavaVersion.get()
-		targetCompatibility = extension.mainJavaVersion.get()
-	}
 	pluginManager.withPlugin("groovy") {
+		tasks.named<GroovyCompile>("compileGroovy").configure {
+			// Groovy compiler does not support the --release flag.
+			sourceCompatibility = extension.mainJavaVersion.get().majorVersion
+			targetCompatibility = extension.mainJavaVersion.get().majorVersion
+		}
 		tasks.withType<GroovyCompile>().named { it.startsWith("compileTest") }.configureEach {
 			// Groovy compiler does not support the --release flag.
 			sourceCompatibility = extension.testJavaVersion.get().majorVersion

gradle/plugins/common/src/main/kotlin/junitbuild.testing-conventions.gradle.kts

@@ -1,8 +1,8 @@
 import com.gradle.develocity.agent.gradle.internal.test.PredictiveTestSelectionConfigurationInternal
 import com.gradle.develocity.agent.gradle.test.PredictiveTestSelectionMode
-import junitbuild.extensions.trackOperationSystemAsInput
-import junitbuild.extensions.dependencyFromLibs
 import junitbuild.extensions.bundleFromLibs
+import junitbuild.extensions.dependencyFromLibs
+import junitbuild.extensions.trackOperationSystemAsInput
 import org.gradle.api.tasks.PathSensitivity.RELATIVE
 import org.gradle.api.tasks.testing.logging.TestExceptionFormat.FULL
 import org.gradle.api.tasks.testing.logging.TestLogEvent.FAILED
@@ -22,6 +22,10 @@ var javaAgentClasspath = configurations.resolvable("javaAgentClasspath") {
 var openTestReportingCli = configurations.dependencyScope("openTestReportingCli")
 var openTestReportingCliClasspath = configurations.resolvable("openTestReportingCliClasspath") {
 	extendsFrom(openTestReportingCli.get())
+	attributes {
+		// Avoid using the shadowed variant of junit-platform-reporting
+		attribute(Bundling.BUNDLING_ATTRIBUTE, objects.named(Bundling::class, Bundling.EXTERNAL))
+	}
 }
 
 val generateOpenTestHtmlReport by tasks.registering(JavaExec::class) {