KPM-mapped-model: simple mapping of JVM variants

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/KotlinDependenciesManagement.kt

@@ -24,7 +24,8 @@ import org.jetbrains.kotlin.gradle.plugin.PropertiesProvider
 import org.jetbrains.kotlin.gradle.plugin.mpp.*
 import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.KotlinGradleFragment
 import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.KotlinGradleModule
-import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.KotlinPm20ProjectExtension
+import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.hasKpmModel
+import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.kpmModules
 import org.jetbrains.kotlin.gradle.plugin.sources.KotlinDependencyScope
 import org.jetbrains.kotlin.gradle.plugin.sources.resolveAllDependsOnSourceSets
 import org.jetbrains.kotlin.gradle.plugin.sources.sourceSetDependencyConfigurationByScope
@@ -100,12 +101,11 @@ internal fun configureStdlibDefaultDependency(project: Project) = with(project)
 
     val scopesToHandleConfigurations = listOf(KotlinDependencyScope.API_SCOPE, KotlinDependencyScope.IMPLEMENTATION_SCOPE)
 
-    when (val topLevelExtension = project.topLevelExtension) {
-        is KotlinPm20ProjectExtension -> {
-            addStdlibToPm20Project(topLevelExtension)
-        }
-        is KotlinProjectExtension -> {
-            topLevelExtension.sourceSets.all { kotlinSourceSet ->
+    val ext = topLevelExtension
+    when {
+        project.hasKpmModel -> addStdlibToKpmProject(project)
+        ext is KotlinProjectExtension -> {
+            ext.sourceSets.all { kotlinSourceSet ->
                 scopesToHandleConfigurations.forEach { scope ->
                     val scopeConfiguration = project.sourceSetDependencyConfigurationByScope(kotlinSourceSet, scope)
 
@@ -130,11 +130,10 @@ internal fun configureStdlibDefaultDependency(project: Project) = with(project)
     }
 }
 
-private fun addStdlibToPm20Project(
-    topLevelExtension: KotlinPm20ProjectExtension
+private fun addStdlibToKpmProject(
+    project: Project
 ) {
-    val project = topLevelExtension.project
-    topLevelExtension.modules.matching { it.name == KotlinGradleModule.MAIN_MODULE_NAME }.configureEach { main ->
+    project.kpmModules.matching { it.name == KotlinGradleModule.MAIN_MODULE_NAME }.configureEach { main ->
         main.fragments.matching { it.name == KotlinGradleFragment.COMMON_FRAGMENT_NAME }.configureEach { common ->
             common.dependencies {
                 api(project.kotlinDependency("kotlin-stdlib-common", project.topLevelExtension.coreLibrariesVersion))

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinPlugin.kt

@@ -368,7 +368,7 @@ internal class KotlinCommonSourceSetProcessor(
             project.locateTask<Task>(kotlinCompilation.target.artifactsTaskName)?.dependsOn(kotlinTask)
         }
 
-        if (kotlinCompilation is AbstractKotlinCompilation<*>) {
+        if (kotlinCompilation is KotlinCompilation<*>) {
             project.whenEvaluated {
                 val subpluginEnvironment: SubpluginEnvironment = SubpluginEnvironment.loadSubplugins(project)
                 subpluginEnvironment.addSubpluginOptions(project, kotlinCompilation)

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinProperties.kt

@@ -206,7 +206,10 @@ internal class PropertiesProvider private constructor(private val project: Proje
         get() = booleanProperty(KOTLIN_MPP_HIERARCHICAL_STRUCTURE_BY_DEFAULT) ?: true
 
     val enableCompatibilityMetadataVariant: Boolean
-        get() = booleanProperty("kotlin.mpp.enableCompatibilityMetadataVariant") ?: !mppHierarchicalStructureByDefault
+        get() {
+            return (booleanProperty("kotlin.mpp.enableCompatibilityMetadataVariant") ?: !mppHierarchicalStructureByDefault) &&
+                    !experimentalKpmModelMapping
+        }
 
     val enableKotlinToolingMetadataArtifact: Boolean
         get() = booleanProperty("kotlin.mpp.enableKotlinToolingMetadataArtifact") ?: true

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/KotlinMultiplatformPlugin.kt

@@ -26,6 +26,12 @@ import org.jetbrains.kotlin.gradle.internal.customizeKotlinDependencies
 import org.jetbrains.kotlin.gradle.plugin.*
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinMultiplatformPlugin.Companion.sourceSetFreeCompilerArgsPropertyName
 import org.jetbrains.kotlin.gradle.plugin.mpp.internal.handleHierarchicalStructureFlagsMigration
+import org.jetbrains.kotlin.gradle.plugin.mpp.isMain
+import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.*
+import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.hasKpmModel
+import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.registerDefaultVariantFactories
+import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.setupFragmentsMetadataForKpmModules
+import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.setupKpmModulesPublication
 import org.jetbrains.kotlin.gradle.plugin.sources.CleanupStaleSourceSetMetadataEntriesService
 import org.jetbrains.kotlin.gradle.plugin.sources.DefaultLanguageSettingsBuilder
 import org.jetbrains.kotlin.gradle.plugin.sources.SourceSetMetadataStorageForIde
@@ -125,6 +131,13 @@ class KotlinMultiplatformPlugin : Plugin<Project> {
                 }
             }
         }
+
+        if (project.hasKpmModel) {
+            setupFragmentsMetadataForKpmModules(project)
+            setupKpmModulesPublication(project)
+            registerDefaultVariantFactories(project)
+            project.kpmModules.matching { it.name == KotlinGradleModule.MAIN_MODULE_NAME }.all { it.makePublic() }
+        }
     }
 
     private fun exportProjectStructureMetadataForOtherBuilds(

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/kotlinCompilations.kt

@@ -151,7 +151,7 @@ abstract class AbstractKotlinCompilation<T : KotlinCommonOptions>(
         }
     }
 
-    final override fun source(sourceSet: KotlinSourceSet) {
+    override fun source(sourceSet: KotlinSourceSet) {
         if (kotlinSourceSets.add(sourceSet)) {
             target.project.whenEvaluated {
                 addExactSourceSetsEagerly(sourceSet.withAllDependsOnSourceSets())

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/pm20/GradlePlugin.kt

@@ -35,32 +35,8 @@ abstract class KotlinPm20GradlePlugin @Inject constructor(
         createDefaultModules(project)
         customizeKotlinDependencies(project)
         registerDefaultVariantFactories(project)
-        setupFragmentsMetadata(project)
-        setupPublication(project)
-    }
-
-    private fun registerDefaultVariantFactories(project: Project) {
-        project.pm20Extension.modules.configureEach { module ->
-            module.fragments.registerFactory(
-                KotlinJvmVariant::class.java,
-                KotlinJvmVariantFactory(module)
-            )
-
-            fun <T : KotlinNativeVariantInternal> registerNativeVariantFactory(
-                constructor: KotlinNativeVariantConstructor<T>
-            ) = module.fragments.registerFactory(
-                constructor.variantClass, KotlinNativeVariantFactory(module, constructor)
-            )
-
-            listOf(
-                // FIXME codegen, add missing native targets
-                KotlinLinuxX64Variant.constructor,
-                KotlinMacosX64Variant.constructor,
-                KotlinMacosArm64Variant.constructor,
-                KotlinIosX64Variant.constructor,
-                KotlinIosArm64Variant.constructor
-            ).forEach { constructor -> registerNativeVariantFactory(constructor) }
-        }
+        setupFragmentsMetadataForKpmModules(project)
+        setupKpmModulesPublication(project)
     }
 
     private fun createDefaultModules(project: Project) {
@@ -71,19 +47,6 @@ abstract class KotlinPm20GradlePlugin @Inject constructor(
         }
     }
 
-    private fun setupFragmentsMetadata(project: Project) {
-        project.pm20Extension.modules.all { module ->
-            configureMetadataResolutionAndBuild(module)
-            configureMetadataExposure(module)
-        }
-    }
-
-    private fun setupPublication(project: Project) {
-        project.pm20Extension.modules.all { module ->
-            setupPublicationForModule(module)
-        }
-    }
-
     private fun setupPublicationForModule(module: KotlinGradleModule) {
         val project = module.project
 

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/pm20/KotlinFragmentCompilationOutputsJarArtifact.kt

@@ -14,8 +14,11 @@ import org.jetbrains.kotlin.gradle.utils.dashSeparatedName
  * Registers a [Jar] task with the variant's compilation outputs and attaches this artifact to the given configuration.
  */
 val KotlinFragmentCompilationOutputsJarArtifact = FragmentArtifacts<KotlinGradleVariant> {
-    artifact(project.locateOrRegisterTask<Jar>(fragment.disambiguateName("jar")) {
+    artifact(project.locateOrRegisterTask<Jar>(fragment.outputsJarTaskName) {
         it.from(fragment.compilationOutputs.allOutputs)
         it.archiveClassifier.set(dashSeparatedName(fragment.name, fragment.containingModule.moduleClassifier))
     })
 }
+
+internal val KotlinGradleVariant.outputsJarTaskName: String
+    get() = disambiguateName("jar")

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/pm20/KotlinJvmVariant.kt

@@ -5,12 +5,30 @@
 
 package org.jetbrains.kotlin.gradle.plugin.mpp.pm20
 
+import groovy.lang.Closure
 import org.gradle.api.artifacts.Configuration
 import org.gradle.api.plugins.BasePluginConvention
+import org.gradle.api.GradleException
+import org.gradle.api.Project
+import org.gradle.api.attributes.AttributeContainer
+import org.gradle.api.file.FileCollection
+import org.gradle.api.plugins.BasePluginExtension
+import org.gradle.api.tasks.TaskProvider
+import org.gradle.api.tasks.bundling.Jar
+import org.gradle.api.tasks.bundling.Zip
 import org.jetbrains.kotlin.gradle.dsl.KotlinJvmOptions
 import org.jetbrains.kotlin.gradle.dsl.KotlinJvmOptionsImpl
-import org.jetbrains.kotlin.gradle.plugin.KotlinPlatformType
-import org.jetbrains.kotlin.gradle.plugin.mpp.filterModuleName
+import org.jetbrains.kotlin.gradle.dsl.kotlinExtension
+import org.jetbrains.kotlin.gradle.plugin.*
+import org.jetbrains.kotlin.gradle.plugin.mpp.*
+import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.util.unambiguousNameInProject
+import org.jetbrains.kotlin.gradle.plugin.sources.kpm.FragmentMappedKotlinSourceSet
+import org.jetbrains.kotlin.gradle.targets.jvm.KotlinJvmTarget
+import org.jetbrains.kotlin.gradle.targets.jvm.KotlinJvmTargetConfigurator
+import org.jetbrains.kotlin.gradle.tasks.*
+import org.jetbrains.kotlin.gradle.tasks.locateTask
+import org.jetbrains.kotlin.project.model.refinesClosure
+import java.util.concurrent.Callable
 
 open class KotlinJvmVariant(
     containingModule: KotlinGradleModule,
@@ -49,3 +67,136 @@ internal fun KotlinGradleVariant.ownModuleName(): String {
     val suffix = if (containingModule.moduleClassifier == null) "" else "_${containingModule.moduleClassifier}"
     return filterModuleName("$baseName$suffix")
 }
+
+open class KotlinVariantMappedJvmCompilation(
+    override val target: KotlinJvmTarget,
+    internal val variant: KotlinJvmVariant,
+) : KotlinJvmCompilation(target, variant.containingModule.name) {
+    // TODO: in the legacy model, it used to be a KotlinCompilationWithResources
+
+    override val runtimeDependencyConfigurationName: String
+        get() = variant.runtimeDependenciesConfiguration.name
+
+    override var runtimeDependencyFiles: FileCollection
+        get() = variant.runtimeDependencyFiles
+        set(value) {
+            variant.runtimeDependencyFiles = value
+        }
+
+    // TODO: compilation data implements compileDependencyFiles as a val, not var, fix this?
+    override val compileDependencyConfigurationName: String
+        get() = variant.compileDependenciesConfiguration.name
+
+    override var compileDependencyFiles: FileCollection
+        get() = compilationData.compileDependencyFiles
+        set(value) {
+            variant.compileDependencyFiles = value
+        }
+
+    private val compilationData: KotlinJvmVariantCompilationData
+        get() = variant.compilationData
+
+    override val kotlinOptions: KotlinJvmOptions = compilationData.kotlinOptions
+
+    override val compilationName: String
+        get() = compilationData.compilationPurpose
+
+    // FIXME: mutating this set should not be allowed
+    override val kotlinSourceSets: MutableSet<KotlinSourceSet>
+        get() = super.kotlinSourceSets
+
+    override val allKotlinSourceSets: Set<KotlinSourceSet>
+        get() {
+            val allMappedSourceSets = target.project.kotlinExtension.sourceSets
+                .filterIsInstance<FragmentMappedKotlinSourceSet>()
+                .associateBy { it.underlyingFragment }
+            return variant.refinesClosure.mapNotNull { allMappedSourceSets[it] }.toSet()
+        }
+
+    override val defaultSourceSetName: String
+        get() = variant.unambiguousNameInProject
+
+    override fun source(sourceSet: KotlinSourceSet) {
+        defaultSourceSet.dependsOn(sourceSet)
+    }
+
+    override fun associateWith(other: KotlinCompilation<*>) {
+        throw UnsupportedOperationException("not supported in the mapped model")
+    }
+
+    override val associateWith: List<KotlinCompilation<*>> get() = emptyList()
+
+    override fun getAttributes(): AttributeContainer {
+        // TODO: not implemented?
+        return HierarchyAttributeContainer(target.attributes)
+    }
+
+    override fun dependencies(configure: KotlinDependencyHandler.() -> Unit) {
+        variant.dependencies(configure)
+    }
+
+    override fun dependencies(configureClosure: Closure<Any?>) {
+        variant.dependencies(configureClosure)
+    }
+
+    override val apiConfigurationName: String
+        get() = variant.apiConfigurationName
+    override val implementationConfigurationName: String
+        get() = variant.implementationConfigurationName
+    override val compileOnlyConfigurationName: String
+        get() = variant.compileOnlyConfigurationName
+    override val runtimeOnlyConfigurationName: String
+        get() = variant.runtimeOnlyConfigurationName
+
+    override val project: Project
+        get() = variant.project
+
+    override val output: KotlinCompilationOutput
+        get() = variant.compilationOutputs
+
+    override val compileKotlinTaskName: String
+        get() = compilationData.compileKotlinTaskName
+
+    override val compileAllTaskName: String
+        get() = compilationData.compileAllTaskName
+
+    override val moduleName: String
+        get() = compilationData.moduleName
+}
+
+class KotlinMappedJvmCompilationFactory(
+    target: KotlinJvmTarget
+) : KotlinJvmCompilationFactory(target) {
+    override fun create(name: String): KotlinVariantMappedJvmCompilation {
+        val module = target.project.kpmModules.maybeCreate(name)
+        val variant = module.fragments.create(target.name, KotlinJvmVariant::class.java)
+        return KotlinVariantMappedJvmCompilation(target, variant)
+    }
+}
+
+class KotlinMappedJvmTargetConfigurator : KotlinJvmTargetConfigurator() {
+    override fun defineConfigurationsForTarget(target: KotlinJvmTarget) = Unit // done in KPM
+    override fun configureCompilationDefaults(target: KotlinJvmTarget) {
+        // everything else is done in KPM, but KPM doesn't have resources processing yet
+        target.compilations.all { compilation ->
+            configureResourceProcessing(
+                compilation,
+                target.project.files(Callable { compilation.allKotlinSourceSets.map { it.resources } })
+            )
+        }
+    }
+
+    override fun configureCompilations(target: KotlinJvmTarget) {
+        target.compilations.create(KotlinCompilation.MAIN_COMPILATION_NAME)
+        target.compilations.create(KotlinCompilation.TEST_COMPILATION_NAME)
+    }
+
+    override fun configureArchivesAndComponent(target: KotlinJvmTarget) = Unit // done in KPM
+
+    override fun createArchiveTasks(target: KotlinJvmTarget): TaskProvider<out Zip> =
+        checkNotNull(
+            target.project.locateTask<Jar>(
+                (target.compilations.getByName(KotlinCompilation.MAIN_COMPILATION_NAME) as KotlinVariantMappedJvmCompilation).variant.outputsJarTaskName
+            )
+        )
+}

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/pm20/KotlinMetadataCompilationData.kt

@@ -11,10 +11,8 @@ import org.gradle.api.file.FileCollection
 import org.gradle.api.file.SourceDirectorySet
 import org.gradle.api.plugins.BasePluginExtension
 import org.gradle.api.tasks.TaskProvider
-import org.jetbrains.kotlin.gradle.dsl.KotlinCommonOptions
-import org.jetbrains.kotlin.gradle.dsl.KotlinMultiplatformCommonOptions
+import org.jetbrains.kotlin.gradle.dsl.*
 import org.jetbrains.kotlin.gradle.dsl.KotlinMultiplatformCommonOptionsImpl
-import org.jetbrains.kotlin.gradle.dsl.pm20Extension
 import org.jetbrains.kotlin.gradle.plugin.*
 import org.jetbrains.kotlin.gradle.plugin.mpp.*
 import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.util.disambiguateName
@@ -41,7 +39,7 @@ internal abstract class AbstractKotlinFragmentMetadataCompilationData<T : Kotlin
 ) : KotlinMetadataCompilationData<T> {
 
     override val owner
-        get() = project.pm20Extension
+        get() = project.topLevelExtension
 
     override val compilationPurpose: String
         get() = fragment.fragmentName

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/pm20/ModulePublishing.kt

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.plugin.mpp.pm20
+
+import org.gradle.api.Project
+import org.gradle.api.component.SoftwareComponentFactory
+import org.gradle.api.publish.PublishingExtension
+import org.gradle.api.publish.maven.MavenPublication
+import org.jetbrains.kotlin.gradle.dsl.pm20Extension
+import javax.inject.Inject
+
+internal fun setupKpmModulesPublication(project: Project) {
+    project.kpmModules.all { module ->
+        setupPublicationForModule(module)
+    }
+}
+
+internal fun setupPublicationForModule(module: KotlinGradleModule) {
+    val project = module.project
+
+    val metadataElements = project.configurations.getByName(metadataElementsConfigurationName(module))
+    val sourceElements = project.configurations.getByName(sourceElementsConfigurationName(module))
+
+    val componentName = rootPublicationComponentName(module)
+    val rootSoftwareComponent = SoftwareComponentFactoryHolder(project).softwareComponentFactory.adhoc(componentName).also {
+        project.components.add(it)
+        it.addVariantsFromConfiguration(metadataElements) { }
+        it.addVariantsFromConfiguration(sourceElements) { }
+    }
+
+    module.ifMadePublic {
+        val metadataDependencyConfiguration = resolvableMetadataConfiguration(module)
+        project.pluginManager.withPlugin("maven-publish") {
+            project.extensions.getByType(PublishingExtension::class.java).publications.create(
+                componentName,
+                MavenPublication::class.java
+            ) { publication ->
+                publication.from(rootSoftwareComponent)
+                publication.versionMapping { versionMapping ->
+                    versionMapping.allVariants {
+                        it.fromResolutionOf(metadataDependencyConfiguration)
+                    }
+                }
+            }
+        }
+    }
+}
+
+private open class SoftwareComponentFactoryHolder @Inject constructor(
+    @Inject val softwareComponentFactory: SoftwareComponentFactory
+) {
+    companion object {
+        operator fun invoke(project: Project): SoftwareComponentFactoryHolder {
+            return project.objects.newInstance(SoftwareComponentFactoryHolder::class.java)
+        }
+    }
+}

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/pm20/VariantFactories.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.plugin.mpp.pm20
+
+import org.gradle.api.Project
+import org.jetbrains.kotlin.gradle.dsl.pm20Extension
+import kotlin.reflect.KClass
+
+internal fun registerDefaultVariantFactories(project: Project) {
+    project.kpmModules.configureEach { module ->
+        module.fragments.registerFactory(
+            KotlinJvmVariant::class.java,
+            KotlinJvmVariantFactory(module)
+        )
+
+        fun <T : KotlinNativeVariantInternal> registerNativeVariantFactory(
+            constructor: KotlinNativeVariantConstructor<T>
+        ) = module.fragments.registerFactory(
+            constructor.variantClass, KotlinNativeVariantFactory(module, constructor)
+        )
+
+        listOf(
+            // FIXME codegen, add missing native targets
+            KotlinLinuxX64Variant.constructor,
+            KotlinMacosX64Variant.constructor,
+            KotlinMacosArm64Variant.constructor,
+            KotlinIosX64Variant.constructor,
+            KotlinIosArm64Variant.constructor
+        ).forEach { constructor -> registerNativeVariantFactory(constructor) }
+    }
+}

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/pm20/fragmentsMetadataCompilation.kt

@@ -29,6 +29,13 @@ import org.jetbrains.kotlin.library.KLIB_FILE_EXTENSION
 import org.jetbrains.kotlin.project.model.KotlinModuleFragment
 import java.util.concurrent.Callable
 
+internal fun setupFragmentsMetadataForKpmModules(project: Project) {
+    project.kpmModules.all { module ->
+        configureMetadataResolutionAndBuild(module)
+        configureMetadataExposure(module)
+    }
+}
+
 internal fun configureMetadataResolutionAndBuild(module: KotlinGradleModule) {
     val project = module.project
     createResolvableMetadataConfigurationForModule(module)

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/jvm/KotlinJvmCompilationFactory.kt

@@ -8,7 +8,7 @@ package org.jetbrains.kotlin.gradle.plugin.mpp
 
 import org.jetbrains.kotlin.gradle.targets.jvm.KotlinJvmTarget
 
-class KotlinJvmCompilationFactory(
+open class KotlinJvmCompilationFactory(
     val target: KotlinJvmTarget
 ) : KotlinCompilationFactory<KotlinJvmCompilation> {
     override val itemClass: Class<KotlinJvmCompilation>

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/jvm/KotlinJvmTargetConfigurator.kt

@@ -19,7 +19,7 @@ import org.jetbrains.kotlin.gradle.tasks.registerTask
 import org.jetbrains.kotlin.gradle.testing.internal.kotlinTestRegistry
 import org.jetbrains.kotlin.gradle.testing.testTaskName
 
-class KotlinJvmTargetConfigurator :
+open class KotlinJvmTargetConfigurator :
     KotlinOnlyTargetConfigurator<KotlinJvmCompilation, KotlinJvmTarget>(true, true),
     KotlinTargetWithTestsConfigurator<KotlinJvmTestRun, KotlinJvmTarget> {
 

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/jvm/KotlinJvmTargetPreset.kt

@@ -8,6 +8,9 @@ package org.jetbrains.kotlin.gradle.plugin.mpp
 
 import org.gradle.api.Project
 import org.jetbrains.kotlin.gradle.plugin.KotlinPlatformType
+import org.jetbrains.kotlin.gradle.plugin.PropertiesProvider
+import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.KotlinMappedJvmCompilationFactory
+import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.KotlinMappedJvmTargetConfigurator
 import org.jetbrains.kotlin.gradle.targets.jvm.KotlinJvmTarget
 import org.jetbrains.kotlin.gradle.targets.jvm.KotlinJvmTargetConfigurator
 
@@ -23,9 +26,14 @@ class KotlinJvmTargetPreset(
     override fun getName(): String = PRESET_NAME
 
     override fun createCompilationFactory(forTarget: KotlinJvmTarget): KotlinCompilationFactory<KotlinJvmCompilation> =
-        KotlinJvmCompilationFactory(forTarget)
+        if (PropertiesProvider(project).experimentalKpmModelMapping)
+            KotlinMappedJvmCompilationFactory(forTarget)
+        else KotlinJvmCompilationFactory(forTarget)
 
-    override fun createKotlinTargetConfigurator() = KotlinJvmTargetConfigurator()
+    override fun createKotlinTargetConfigurator() =
+        if (PropertiesProvider(project).experimentalKpmModelMapping)
+            KotlinMappedJvmTargetConfigurator()
+        else KotlinJvmTargetConfigurator()
 
     override val platformType: KotlinPlatformType
         get() = KotlinPlatformType.jvm

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/metadata/KotlinMetadataTargetConfigurator.kt

@@ -70,7 +70,7 @@ class KotlinMetadataTargetConfigurator :
     override fun configureTarget(target: KotlinMetadataTarget) {
         super.configureTarget(target)
 
-        if (target.project.isKotlinGranularMetadataEnabled) {
+        if (target.project.isKotlinGranularMetadataEnabled && !target.project.hasKpmModel) {
             KotlinBuildStatsService.getInstance()?.report(BooleanMetrics.ENABLED_HMPP, true)
 
             target.compilations.withType(KotlinCommonCompilation::class.java).getByName(KotlinCompilation.MAIN_COMPILATION_NAME).run {
@@ -147,16 +147,18 @@ class KotlinMetadataTargetConfigurator :
             }
         }
 
-        val legacyJar = target.project.registerTask<Jar>(target.legacyArtifactsTaskName)
-        legacyJar.configure {
-            // Capture it here to use in onlyIf spec. Direct usage causes serialization of target attempt when configuration cache is enabled
-            val isCompatibilityMetadataVariantEnabled = target.project.isCompatibilityMetadataVariantEnabled
-            it.description = "Assembles an archive containing the Kotlin metadata of the commonMain source set."
-            if (!isCompatibilityMetadataVariantEnabled) {
-                it.archiveClassifier.set("commonMain")
+        if (target.project.isCompatibilityMetadataVariantEnabled) {
+            val legacyJar = target.project.registerTask<Jar>(target.legacyArtifactsTaskName)
+            legacyJar.configure {
+                // Capture it here to use in onlyIf spec. Direct usage causes serialization of target attempt when configuration cache is enabled
+                val isCompatibilityMetadataVariantEnabled = target.project.isCompatibilityMetadataVariantEnabled
+                it.description = "Assembles an archive containing the Kotlin metadata of the commonMain source set."
+                if (!isCompatibilityMetadataVariantEnabled) {
+                    it.archiveClassifier.set("commonMain")
+                }
+                it.onlyIf { isCompatibilityMetadataVariantEnabled }
+                it.from(target.compilations.getByName(KotlinCompilation.MAIN_COMPILATION_NAME).output.allOutputs)
             }
-            it.onlyIf { isCompatibilityMetadataVariantEnabled }
-            it.from(target.compilations.getByName(KotlinCompilation.MAIN_COMPILATION_NAME).output.allOutputs)
         }
 
         return result