Ensure that kapt configurations are not exposed for consumption

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/Kapt3IT.kt

@@ -472,4 +472,16 @@ open class Kapt3IT : Kapt3BaseIT() {
             assertTasksExecuted(":app:kaptGenerateStubsKotlin", ":app:kaptKotlin")
         }
     }
+
+    @Test
+    fun testDependencyOnKaptModule() = with(Project("simpleProject")) {
+        setupWorkingDir()
+
+        val kaptProject = Project("simple", directoryPrefix = "kapt2").apply { setupWorkingDir() }
+        kaptProject.projectDir.copyRecursively(projectDir.resolve("simple"))
+        projectDir.resolve("settings.gradle").writeText("include 'simple'")
+        gradleBuildScript().appendText("\ndependencies { implementation project(':simple') }")
+
+        testResolveAllConfigurations()
+    }
 }

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/kapt/Kapt3KotlinGradleSubplugin.kt

@@ -127,7 +127,10 @@ class Kapt3KotlinGradleSubplugin : KotlinGradleSubplugin<KotlinCompile> {
             val configurationName = Kapt3KotlinGradleSubplugin.getKaptConfigurationName(sourceSetName)
 
             project.configurations.findByName(configurationName)?.let { return it }
-            val aptConfiguration = project.configurations.create(configurationName)
+            val aptConfiguration = project.configurations.create(configurationName).apply {
+                // Should not be available for consumption from other projects during variant-aware dependency resolution:
+                isCanBeConsumed = false
+            }
 
             if (aptConfiguration.name != Kapt3KotlinGradleSubplugin.MAIN_KAPT_CONFIGURATION_NAME) {
                 // The main configuration can be created after the current one. We should handle this case