[KAPT] KT-62059 Disable incremental stub generation in K2

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

@@ -351,13 +351,13 @@ open class Kapt3IT : Kapt3BaseIT() {
 
     @DisplayName("Kapt is working with incremental compilation")
     @GradleTest
-    fun testSimpleWithIC(gradleVersion: GradleVersion) {
+   open fun testSimpleWithIC(gradleVersion: GradleVersion) {
         doTestSimpleWithIC(gradleVersion)
     }
 
     @DisplayName("Kapt is working with incremental compilation, when kotlin.incremental.useClasspathSnapshot=true")
     @GradleTest
-    fun testSimpleWithIC_withClasspathSnapshot(gradleVersion: GradleVersion) {
+    open fun testSimpleWithIC_withClasspathSnapshot(gradleVersion: GradleVersion) {
         doTestSimpleWithIC(gradleVersion, useClasspathSnapshot = true)
     }
 

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/Kapt4IT.kt

@@ -21,10 +21,6 @@ class Kapt4IT : Kapt3IT() {
         forceKapt4()
     }
 
-
-    @Disabled("Enable when KT-61845 is fixed")
-    override fun testKt18799(gradleVersion: GradleVersion) {}
-
     @Disabled("Doesn't make sense in Kapt 4")
     override fun useGeneratedKotlinSourceK2(gradleVersion: GradleVersion) {}
 
@@ -78,6 +74,12 @@ class Kapt4ClassLoadersCacheIT : Kapt3ClassLoadersCacheIT() {
 
     @Disabled("Doesn't work in 2.0. Neither with Kapt 3 nor with Kapt 4")
     override fun testMPPKaptPresence(gradleVersion: GradleVersion) {}
+
+    @Disabled("Incremental compilation doesn't work in 2.0")
+    override fun testSimpleWithIC(gradleVersion: GradleVersion) {}
+
+    @Disabled("Incremental compilation doesn't work in 2.0")
+    override fun testSimpleWithIC_withClasspathSnapshot(gradleVersion: GradleVersion) {}
 }
 
 fun TestProject.forceKapt4() {

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

@@ -152,4 +152,7 @@ abstract class KaptGenerateStubsTask @Inject constructor(
             args.freeArgs += (scriptSources.asFileTree.files + javaSources.files + sources.asFileTree.files).map { it.absolutePath }
         }
     }
+
+    override fun isIncrementalCompilationEnabled(): Boolean =
+        super.isIncrementalCompilationEnabled() && !useK2Kapt.get() && ("-Xuse-kapt4" !in compilerOptions.freeCompilerArgs.get())
 }