[Gradle] Add Gradle 7.6+ variant

#KT-54634 In Progress

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/SimpleKotlinGradleIT.kt

@@ -215,14 +215,15 @@ class SimpleKotlinGradleIT : KGPBaseTest() {
 
     @DisplayName("Proper Gradle plugin variant is used")
     @GradleTestVersions(
-        additionalVersions = [TestVersions.Gradle.G_7_0, TestVersions.Gradle.G_7_1, TestVersions.Gradle.G_7_4],
-        maxVersion = TestVersions.Gradle.G_7_5
+        additionalVersions = [TestVersions.Gradle.G_7_0, TestVersions.Gradle.G_7_1, TestVersions.Gradle.G_7_4, TestVersions.Gradle.G_7_5],
+        maxVersion = TestVersions.Gradle.G_7_6
     )
     @GradleTest
     internal fun pluginVariantIsUsed(gradleVersion: GradleVersion) {
         project("kotlinProject", gradleVersion) {
             build("tasks") {
                 val expectedVariant = when (gradleVersion) {
+                    GradleVersion.version(TestVersions.Gradle.G_7_6) -> "gradle76"
                     GradleVersion.version(TestVersions.Gradle.G_7_5) -> "gradle75"
                     in GradleVersion.version(TestVersions.Gradle.G_7_1)..GradleVersion.version(TestVersions.Gradle.G_7_4) -> "gradle71"
                     GradleVersion.version(TestVersions.Gradle.G_7_0) -> "gradle70"

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/testbase/TestVersions.kt

@@ -18,7 +18,8 @@ interface TestVersions {
         const val G_7_2 = "7.2"
         const val G_7_3 = "7.3.3"
         const val G_7_4 = "7.4.2"
-        const val G_7_5 = "7.5"
+        const val G_7_5 = "7.5.1"
+        const val G_7_6 = "7.6"
         // https://gradle.org/nightly/
         // Retention policy is 3 months
         const val G_8_0 = "8.0-20221126231700+0000"

libraries/tools/kotlin-gradle-plugin/src/gradle76/kotlin/org/jetbrains/kotlin/gradle/plugin/PluginWrappers.kt

@@ -0,0 +1,143 @@
+/*
+ * Copyright 2010-2022 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
+
+import com.android.build.gradle.BaseExtension
+import org.gradle.api.Named
+import org.gradle.api.NamedDomainObjectContainer
+import org.gradle.api.Project
+import org.gradle.api.file.SourceDirectorySet
+import org.gradle.api.model.ObjectFactory
+import org.gradle.tooling.provider.model.ToolingModelBuilderRegistry
+import javax.inject.Inject
+
+private const val PLUGIN_VARIANT_NAME = "gradle76"
+
+open class KotlinPluginWrapper @Inject constructor(
+    registry: ToolingModelBuilderRegistry
+) : AbstractKotlinPluginWrapper(registry) {
+
+    override val pluginVariant: String = PLUGIN_VARIANT_NAME
+
+    override fun apply(project: Project) {
+        project.registerVariantImplementations()
+        super.apply(project)
+    }
+}
+
+open class KotlinCommonPluginWrapper @Inject constructor(
+    registry: ToolingModelBuilderRegistry
+) : AbstractKotlinCommonPluginWrapper(registry) {
+
+    override val pluginVariant: String = PLUGIN_VARIANT_NAME
+
+    override fun apply(project: Project) {
+        project.registerVariantImplementations()
+        super.apply(project)
+    }
+}
+
+open class KotlinAndroidPluginWrapper @Inject constructor(
+    registry: ToolingModelBuilderRegistry
+) : AbstractKotlinAndroidPluginWrapper(registry) {
+
+    override val pluginVariant: String = PLUGIN_VARIANT_NAME
+
+    override fun apply(project: Project) {
+        project.registerVariantImplementations()
+        super.apply(project)
+    }
+}
+
+@Suppress("DEPRECATION_ERROR")
+open class Kotlin2JsPluginWrapper @Inject constructor(
+    registry: ToolingModelBuilderRegistry
+) : AbstractKotlin2JsPluginWrapper(registry) {
+
+    override val pluginVariant: String = PLUGIN_VARIANT_NAME
+
+    override fun apply(project: Project) {
+        project.registerVariantImplementations()
+        super.apply(project)
+    }
+}
+
+open class KotlinMultiplatformPluginWrapper : AbstractKotlinMultiplatformPluginWrapper() {
+
+    override val pluginVariant: String = PLUGIN_VARIANT_NAME
+
+    override fun apply(project: Project) {
+        project.registerVariantImplementations()
+        super.apply(project)
+    }
+}
+
+open class KotlinJsPluginWrapper : AbstractKotlinJsPluginWrapper() {
+
+    override val pluginVariant: String = PLUGIN_VARIANT_NAME
+
+    override fun apply(project: Project) {
+        project.registerVariantImplementations()
+        super.apply(project)
+    }
+}
+
+open class KotlinPm20PluginWrapper @Inject constructor(
+    objectFactory: ObjectFactory
+) : AbstractKotlinPm20PluginWrapper(objectFactory) {
+
+    override val pluginVariant: String = PLUGIN_VARIANT_NAME
+
+    override fun apply(project: Project) {
+        project.registerVariantImplementations()
+        super.apply(project)
+    }
+}
+
+open class KotlinPlatformJvmPlugin : KotlinPlatformImplementationPluginBase("jvm") {
+    override fun apply(project: Project) {
+        project.applyPlugin<KotlinPluginWrapper>()
+        super.apply(project)
+    }
+}
+
+open class KotlinPlatformJsPlugin : KotlinPlatformImplementationPluginBase("js") {
+    override fun apply(project: Project) {
+        @Suppress("DEPRECATION_ERROR")
+        project.applyPlugin<Kotlin2JsPluginWrapper>()
+        super.apply(project)
+    }
+}
+
+open class KotlinPlatformAndroidPlugin : KotlinPlatformImplementationPluginBase("android") {
+    override fun apply(project: Project) {
+        project.applyPlugin<KotlinAndroidPluginWrapper>()
+        super.apply(project)
+    }
+
+    override fun namedSourceSetsContainer(project: Project): NamedDomainObjectContainer<*> =
+        (project.extensions.getByName("android") as BaseExtension).sourceSets
+
+    override fun addCommonSourceSetToPlatformSourceSet(commonSourceSet: Named, platformProject: Project) {
+        val androidExtension = platformProject.extensions.getByName("android") as BaseExtension
+        val androidSourceSet = androidExtension.sourceSets.findByName(commonSourceSet.name) ?: return
+        val kotlinSourceSet = androidSourceSet.getExtension<SourceDirectorySet>(KOTLIN_DSL_NAME)
+            ?: return
+        kotlinSourceSet.source(getKotlinSourceDirectorySetSafe(commonSourceSet)!!)
+    }
+}
+
+open class KotlinPlatformCommonPlugin : KotlinPlatformPluginBase("common") {
+    override fun apply(project: Project) {
+        warnAboutKotlin12xMppDeprecation(project)
+        project.applyPlugin<KotlinCommonPluginWrapper>()
+    }
+}
+
+@Suppress("UnusedReceiverParameter")
+private fun Project.registerVariantImplementations() {
+
+}