variant aware jvm attribute

Author: elect86

build.gradle.kts

@@ -1,3 +1,5 @@
+import org.gradle.api.attributes.LibraryElements.LIBRARY_ELEMENTS_ATTRIBUTE
+import org.gradle.api.attributes.java.TargetJvmVersion.TARGET_JVM_VERSION_ATTRIBUTE
 import org.jetbrains.dokka.gradle.DokkaTask
 
 plugins {
@@ -20,7 +22,7 @@ dependencies {
     implementation(kotlin("stdlib"))
     implementation(kotlin("stdlib-jdk8"))
 
-    attributesSchema.attribute(LibraryElements.LIBRARY_ELEMENTS_ATTRIBUTE).compatibilityRules.add(ModularJarCompatibilityRule::class)
+    attributesSchema.attribute(LIBRARY_ELEMENTS_ATTRIBUTE).compatibilityRules.add(ModularJarCompatibilityRule::class)
     components { withModule<ModularKotlinRule>(kotlin("stdlib")) }
     components { withModule<ModularKotlinRule>(kotlin("stdlib-jdk8")) }
 
@@ -80,9 +82,10 @@ artifacts {
 
 // == Add access to the 'modular' variant of kotlin("stdlib"): Put this into a buildSrc plugin and reuse it in all your subprojects
 configurations.all {
+    attributes.attribute(TARGET_JVM_VERSION_ATTRIBUTE, 11)
     val n = name.toLowerCase()
     if (n.endsWith("compileclasspath") || n.endsWith("runtimeclasspath"))
-        attributes.attribute(LibraryElements.LIBRARY_ELEMENTS_ATTRIBUTE, objects.named("modular-jar"))
+        attributes.attribute(LIBRARY_ELEMENTS_ATTRIBUTE, objects.named("modular-jar"))
     if (n.endsWith("compile") || n.endsWith("runtime"))
         isCanBeConsumed = false
 }
@@ -104,7 +107,7 @@ abstract class ModularKotlinRule : ComponentMetadataRule {
         listOf("compile", "runtime").forEach { baseVariant ->
             ctx.details.addVariant("${baseVariant}Modular", baseVariant) {
                 attributes {
-                    attribute(LibraryElements.LIBRARY_ELEMENTS_ATTRIBUTE, getObjects().named("modular-jar"))
+                    attribute(LIBRARY_ELEMENTS_ATTRIBUTE, getObjects().named("modular-jar"))
                 }
                 withFiles {
                     removeAllFiles()