[Gradle] Deprecate scoped metadata dependencies

Scoped metadata dependencies are not needed since
metadata dependencies are used only for metadata compilation. Metadata
is not consumed at runtime. Therefore, scoped metadata dependencies
are not required.

^KT-55312

libraries/tools/kotlin-gradle-plugin-api/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinSourceSet.kt

@@ -25,19 +25,18 @@ interface KotlinSourceSet : Named, HasKotlinDependencies {
     fun dependsOn(other: KotlinSourceSet)
     val dependsOn: Set<KotlinSourceSet>
 
+    val metadataLibrariesConfigurationName: String
+    @Deprecated(message = "KT-55312")
     val apiMetadataConfigurationName: String
+    @Deprecated(message = "KT-55312")
     val implementationMetadataConfigurationName: String
+    @Deprecated(message = "KT-55312")
     val compileOnlyMetadataConfigurationName: String
     @Deprecated(message = "KT-55230: RuntimeOnly scope is not supported for metadata dependency transformation")
     val runtimeOnlyMetadataConfigurationName: String
 
     override val relatedConfigurationNames: List<String>
-        get() = super.relatedConfigurationNames +
+        get() = super.relatedConfigurationNames + metadataLibrariesConfigurationName
-                listOf(
-                    apiMetadataConfigurationName,
-                    implementationMetadataConfigurationName,
-                    compileOnlyMetadataConfigurationName,
-                )
 
     companion object {
         const val COMMON_MAIN_SOURCE_SET_NAME = "commonMain"

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

@@ -86,8 +86,7 @@ private fun KotlinTarget.excludeStdlibAndKotlinTestCommonFromPlatformCompilation
     compilations.all {
         listOfNotNull(
             it.compileDependencyConfigurationName,
-            it.defaultSourceSet.apiMetadataConfigurationName,
+            it.defaultSourceSet.metadataLibrariesConfigurationName,
-            it.defaultSourceSet.implementationMetadataConfigurationName,
             (it as? KotlinCompilationToRunnableFiles<*>)?.runtimeDependencyConfigurationName,
 
             // Additional configurations for (old) jvmWithJava-preset. Remove it when we drop it completely

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/GranularMetadataTransformation.kt

@@ -97,17 +97,9 @@ internal sealed class MetadataDependencyResolution(
 internal class GranularMetadataTransformation(
     val project: Project,
     val kotlinSourceSet: KotlinSourceSet,
-    /** A list of scopes that the dependencies from [kotlinSourceSet] are treated as requested dependencies. */
-    private val sourceSetRequestedScopes: List<KotlinDependencyScope>,
     /** A configuration that holds the dependencies of the appropriate scope for all Kotlin source sets in the project */
     private val parentTransformations: Lazy<Iterable<GranularMetadataTransformation>>
 ) {
-    init {
-        require(KotlinDependencyScope.RUNTIME_ONLY_SCOPE !in sourceSetRequestedScopes) {
-            "KT-55230: RuntimeOnly scope is not supported for metadata dependency transformation"
-        }
-    }
-
     val metadataDependencyResolutions: Iterable<MetadataDependencyResolution> by lazy { doTransform() }
 
     // Keep parents of each dependency, too. We need a dependency's parent when it's an MPP's metadata module dependency:
@@ -232,7 +224,6 @@ internal class GranularMetadataTransformation(
         val sourceSetVisibility =
             SourceSetVisibilityProvider(project).getVisibleSourceSets(
                 kotlinSourceSet,
-                sourceSetRequestedScopes,
                 if (projectStructureMetadata.isPublishedAsRoot) module else parent, module,
                 projectStructureMetadata,
                 resolvedToProject

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/MetadataDependencyTransformationTask.kt

@@ -89,7 +89,6 @@ open class MetadataDependencyTransformationTask
         GranularMetadataTransformation(
             project,
             kotlinSourceSet,
-            KotlinDependencyScope.compileScopes,
             lazy {
                 dependsOnClosureWithInterCompilationDependencies(kotlinSourceSet).map {
                     project.tasks.withType(MetadataDependencyTransformationTask::class.java)

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/SourceSetVisibilityProvider.kt

@@ -49,7 +49,6 @@ internal class SourceSetVisibilityProvider(
      */
     fun getVisibleSourceSets(
         visibleFrom: KotlinSourceSet,
-        dependencyScopes: Iterable<KotlinDependencyScope>,
         resolvedRootMppDependency: ResolvedComponentResult?,
         resolvedMetadataDependency: ResolvedComponentResult,
         dependencyProjectStructureMetadata: KotlinProjectStructureMetadata,
@@ -65,11 +64,7 @@ internal class SourceSetVisibilityProvider(
         val visiblePlatformVariantNames: Set<String?> =
             compilations
                 .filter { it.target.platformType != KotlinPlatformType.common }
-                .flatMapTo(mutableSetOf()) { compilation ->
+                .map { compilation -> project.configurations.getByName(compilation.compileDependencyConfigurationName) }
-                    // To find out which variant the MPP dependency got resolved for each compilation, take the resolvable configurations
-                    // that we have in the compilations:
-                    dependencyScopes.mapNotNull { scope -> project.resolvableConfigurationFromCompilationByScope(compilation, scope) }
-                }
                 .mapTo(mutableSetOf()) { configuration ->
                     val resolvedVariant = resolvedVariantsProvider.getResolvedVariantName(mppModuleIdentifier, configuration)
                         ?.let { kotlinVariantNameFromPublishedVariantName(it) }
@@ -128,18 +123,3 @@ internal class SourceSetVisibilityProvider(
 
 internal fun kotlinVariantNameFromPublishedVariantName(resolvedToVariantName: String): String =
     originalVariantNameFromPublished(resolvedToVariantName) ?: resolvedToVariantName
-
-private fun Project.resolvableConfigurationFromCompilationByScope(
-    compilation: KotlinCompilation<*>,
-    scope: KotlinDependencyScope
-): Configuration? {
-    val configurationName = when (scope) {
-        KotlinDependencyScope.API_SCOPE, KotlinDependencyScope.IMPLEMENTATION_SCOPE, KotlinDependencyScope.COMPILE_ONLY_SCOPE -> compilation.compileDependencyConfigurationName
-
-        KotlinDependencyScope.RUNTIME_ONLY_SCOPE ->
-            (compilation as? KotlinCompilationToRunnableFiles<*>)?.runtimeDependencyConfigurationName
-                ?: return null
-    }
-
-    return project.configurations.getByName(configurationName)
-}

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/sources/DefaultKotlinSourceSet.kt

@@ -45,12 +45,18 @@ abstract class DefaultKotlinSourceSet @Inject constructor(
     override val runtimeOnlyConfigurationName: String
         get() = disambiguateName(RUNTIME_ONLY)
 
+    override val metadataLibrariesConfigurationName: String
+        get() = disambiguateName(lowerCamelCaseName("compile", METADATA_CONFIGURATION_NAME_SUFFIX))
+
+    @Deprecated("KT-55312")
     override val apiMetadataConfigurationName: String
         get() = lowerCamelCaseName(apiConfigurationName, METADATA_CONFIGURATION_NAME_SUFFIX)
 
+    @Deprecated("KT-55312")
     override val implementationMetadataConfigurationName: String
         get() = lowerCamelCaseName(implementationConfigurationName, METADATA_CONFIGURATION_NAME_SUFFIX)
 
+    @Deprecated("KT-55312")
     override val compileOnlyMetadataConfigurationName: String
         get() = lowerCamelCaseName(compileOnlyConfigurationName, METADATA_CONFIGURATION_NAME_SUFFIX)
 

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/sources/KotlinDependencyScope.kt

@@ -52,13 +52,3 @@ internal fun Project.compilationDependencyConfigurationByScope(
             RUNTIME_ONLY_SCOPE -> compilation.runtimeOnlyConfigurationName
         }
     )
-
-internal fun Project.sourceSetMetadataConfigurationByScope(sourceSet: KotlinSourceSet, scope: KotlinDependencyScope): Configuration? {
-    val configurationName = when (scope) {
-        API_SCOPE -> sourceSet.apiMetadataConfigurationName
-        IMPLEMENTATION_SCOPE -> sourceSet.implementationMetadataConfigurationName
-        COMPILE_ONLY_SCOPE -> sourceSet.compileOnlyMetadataConfigurationName
-        RUNTIME_ONLY_SCOPE -> return null  // KT-55230: RuntimeOnly scope is not supported for metadata dependency transformation
-    }
-    return project.configurations.getByName(configurationName)
-}

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/sources/KotlinSourceSetFactory.kt

@@ -76,23 +76,24 @@ internal class DefaultKotlinSourceSetFactory(
 
         val dependencyConfigurationWithMetadata = with(sourceSet) {
             listOf(
-                apiConfigurationName to apiMetadataConfigurationName,
+                listOf(apiConfigurationName, implementationConfigurationName, compileOnlyConfigurationName) to metadataLibrariesConfigurationName,
-                implementationConfigurationName to implementationMetadataConfigurationName,
-                compileOnlyConfigurationName to compileOnlyMetadataConfigurationName,
                 null to intransitiveMetadataConfigurationName
             )
         }
 
-        dependencyConfigurationWithMetadata.forEach { (configurationName, metadataName) ->
+        dependencyConfigurationWithMetadata.forEach { (configurationNames, metadataName) ->
             project.configurations.maybeCreate(metadataName).apply {
                 attributes.attribute(KotlinPlatformType.attribute, KotlinPlatformType.common)
                 attributes.attribute(Usage.USAGE_ATTRIBUTE, project.usageByName(KotlinUsages.KOTLIN_API))
                 attributes.attribute(Category.CATEGORY_ATTRIBUTE, project.categoryByName(Category.LIBRARY))
                 isVisible = false
                 isCanBeConsumed = false
+                isCanBeResolved = true
 
-                if (configurationName != null) {
+                if (configurationNames != null) {
-                    extendsFrom(project.configurations.maybeCreate(configurationName))
+                    for (configurationName in configurationNames) {
+                        extendsFrom(project.configurations.maybeCreate(configurationName))
+                    }
                 }
 
                 if (project.isKotlinGranularMetadataEnabled) {

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

@@ -345,7 +345,7 @@ class KotlinMetadataTargetConfigurator :
         }
 
         compilation.compileDependencyFiles += createMetadataDependencyTransformationClasspath(
-            project.configurations.getByName(ALL_COMPILE_METADATA_CONFIGURATION_NAME),
+            project.configurations.getByName(compilation.defaultSourceSet.metadataLibrariesConfigurationName),
             compilation
         )
 
@@ -364,7 +364,6 @@ class KotlinMetadataTargetConfigurator :
         val granularMetadataTransformation = GranularMetadataTransformation(
             project = project,
             kotlinSourceSet = sourceSet,
-            sourceSetRequestedScopes = dependencyScopesToTransform,
             parentTransformations = lazy {
                 dependsOnClosureWithInterCompilationDependencies(sourceSet).filterIsInstance<DefaultKotlinSourceSet>()
                     .map { it.compileDependenciesTransformationOrFail }
@@ -378,21 +377,28 @@ class KotlinMetadataTargetConfigurator :
             val sourceSetDependencyConfigurationByScope = project.configurations.sourceSetDependencyConfigurationByScope(sourceSet, scope)
 
             if (isSourceSetPublished) {
+                project.addExtendsFromRelation(
+                    sourceSet.metadataLibrariesConfigurationName,
+                    sourceSetDependencyConfigurationByScope.name
+                )
+
+                // we need to include dependencies from sourceSetDependencyConfigurationByScope to
+                // ALL_COMPILE_METADATA_CONFIGURATION_NAME so then we can resolve consistently with it
+                // when resolving [sourceSet.metadataLibrariesConfigurationName]
                 project.addExtendsFromRelation(
                     ALL_COMPILE_METADATA_CONFIGURATION_NAME,
                     sourceSetDependencyConfigurationByScope.name
                 )
             }
-
-            val sourceSetMetadataConfigurationByScope = project.sourceSetMetadataConfigurationByScope(sourceSet, scope)
-            if (sourceSetMetadataConfigurationByScope != null) {
-                granularMetadataTransformation.applyToConfiguration(sourceSetMetadataConfigurationByScope)
-                project.addExtendsFromRelation(
-                    sourceSetMetadataConfigurationByScope.name,
-                    ALL_COMPILE_METADATA_CONFIGURATION_NAME
-                )
-            }
         }
+
+        val sourceSetMetadataConfiguration = project.configurations.getByName(sourceSet.metadataLibrariesConfigurationName)
+        // not necessary: because granularMetadataTransformation already created out of this configuration
+        // so there is no real logic to do dependency handling there.
+        // !!!! granularMetadataTransformation.applyToConfiguration(sourceSetMetadataConfiguration)
+        sourceSetMetadataConfiguration.shouldResolveConsistentlyWith(
+            project.configurations.getByName(ALL_COMPILE_METADATA_CONFIGURATION_NAME)
+        )
     }
 
     /** Ensure that the [configuration] excludes the dependencies that are classified by this [GranularMetadataTransformation] as

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/native/internal/AddIntransitiveMetadataDependency.kt

@@ -18,6 +18,6 @@ import org.jetbrains.kotlin.gradle.plugin.sources.DefaultKotlinSourceSet
 internal fun Project.addIntransitiveMetadataDependencyIfPossible(sourceSet: DefaultKotlinSourceSet, dependency: FileCollection) {
     val dependencyConfigurationName =
         if (project.isIntransitiveMetadataConfigurationEnabled) sourceSet.intransitiveMetadataConfigurationName
-        else sourceSet.implementationMetadataConfigurationName
+        else sourceSet.metadataLibrariesConfigurationName
     project.dependencies.add(dependencyConfigurationName, dependency)
 }

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/native/internal/KotlinNativePlatformDependencies.kt

@@ -97,7 +97,7 @@ private fun Project.addDependencies(
     if (isIdeDependency && sourceSet is DefaultKotlinSourceSet) {
         val metadataConfigurationName =
             if (project.isIntransitiveMetadataConfigurationEnabled) sourceSet.intransitiveMetadataConfigurationName
-            else sourceSet.implementationMetadataConfigurationName
+            else sourceSet.metadataLibrariesConfigurationName
         dependencies.add(metadataConfigurationName, libraries)
     }
 }