Annotate the properties with @PathSensitive (+ override source)

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

@@ -58,8 +58,9 @@ open class KaptTask : ConventionTask(), CompilerArgumentAware<K2JVMCompilerArgum
     @get:Classpath @get:InputFiles
     internal val pluginClasspath get() = pluginOptions.classpath
 
+    @get:InputFiles @get:PathSensitive(PathSensitivity.ABSOLUTE)
     val source: FileCollection
-        @InputFiles get() {
+        get() {
             val sourcesFromKotlinTask = kotlinCompileTask.source
                     .filter { it.extension == "java" && !isInsideDestinationDirs(it) }
 

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

@@ -63,6 +63,10 @@ abstract class AbstractKotlinCompileTool<T : CommonToolArguments>() : AbstractCo
     @get:Internal
     var compilerClasspath: List<File>? = null
 
+    @InputFiles
+    @PathSensitive(PathSensitivity.ABSOLUTE)
+    override fun getSource() = super.getSource()
+
     @get:Classpath @get:InputFiles
     internal val computedCompilerClasspath: List<File>
         get() = compilerClasspath?.takeIf { it.isNotEmpty() }
@@ -461,6 +465,7 @@ open class Kotlin2JsCompile() : AbstractKotlinCompile<K2JSCompilerArguments>(),
 
     @get:InputFiles
     @get:Optional
+    @get:PathSensitive(PathSensitivity.ABSOLUTE)
     internal val friendDependency
         get() = friendTaskName
                 ?.let { project.getTasksByName(it, false).singleOrNull() as? Kotlin2JsCompile }