diff --git a/libraries/tools/kotlin-gradle-plugin-idea/src/main/kotlin/org/jetbrains/kotlin/gradle/kpm/idea/IdeaKpmFragment.kt b/libraries/tools/kotlin-gradle-plugin-idea/src/main/kotlin/org/jetbrains/kotlin/gradle/kpm/idea/IdeaKpmFragment.kt
index d20045fb657..2d8973a8dc6 100644
--- a/libraries/tools/kotlin-gradle-plugin-idea/src/main/kotlin/org/jetbrains/kotlin/gradle/kpm/idea/IdeaKpmFragment.kt
+++ b/libraries/tools/kotlin-gradle-plugin-idea/src/main/kotlin/org/jetbrains/kotlin/gradle/kpm/idea/IdeaKpmFragment.kt
@@ -11,10 +11,9 @@ import java.io.Serializable
 sealed interface IdeaKpmFragment : Serializable {
     val coordinates: IdeaKpmFragmentCoordinates
     val platforms: Set<IdeaKpmPlatform>
-    val languageSettings: IdeaKpmLanguageSettings?
+    val languageSettings: IdeaKpmLanguageSettings
     val dependencies: List<IdeaKpmDependency>
     val sourceDirectories: List<IdeaKpmSourceDirectory>
-    val resourceDirectories: List<IdeaKpmResourceDirectory>
     val extras: Extras
 }
 
@@ -24,10 +23,9 @@ val IdeaKpmFragment.name get() = coordinates.fragmentName
 data class IdeaKpmFragmentImpl(
     override val coordinates: IdeaKpmFragmentCoordinates,
     override val platforms: Set<IdeaKpmPlatform>,
-    override val languageSettings: IdeaKpmLanguageSettings?,
+    override val languageSettings: IdeaKpmLanguageSettings,
     override val dependencies: List<IdeaKpmDependency>,
     override val sourceDirectories: List<IdeaKpmSourceDirectory>,
-    override val resourceDirectories: List<IdeaKpmResourceDirectory>,
     override val extras: Extras
 ) : IdeaKpmFragment {
 
diff --git a/libraries/tools/kotlin-gradle-plugin-idea/src/main/kotlin/org/jetbrains/kotlin/gradle/kpm/idea/IdeaKpmResourceDirectory.kt b/libraries/tools/kotlin-gradle-plugin-idea/src/main/kotlin/org/jetbrains/kotlin/gradle/kpm/idea/IdeaKpmResourceDirectory.kt
deleted file mode 100644
index ef2ed87602c..00000000000
--- a/libraries/tools/kotlin-gradle-plugin-idea/src/main/kotlin/org/jetbrains/kotlin/gradle/kpm/idea/IdeaKpmResourceDirectory.kt
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * 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.kpm.idea
-
-import java.io.File
-import java.io.Serializable
-
-sealed interface IdeaKpmResourceDirectory : Serializable {
-    val file: File
-}
-
-@InternalKotlinGradlePluginApi
-data class IdeaKpmResourceDirectoryImpl(
-    override val file: File
-) : IdeaKpmResourceDirectory {
-
-    @InternalKotlinGradlePluginApi
-    companion object {
-        private const val serialVersionUID = 0L
-    }
-}
diff --git a/libraries/tools/kotlin-gradle-plugin-idea/src/main/kotlin/org/jetbrains/kotlin/gradle/kpm/idea/IdeaKpmSourceDirectory.kt b/libraries/tools/kotlin-gradle-plugin-idea/src/main/kotlin/org/jetbrains/kotlin/gradle/kpm/idea/IdeaKpmSourceDirectory.kt
index 188e0e085ef..8b3e9ae7b6c 100644
--- a/libraries/tools/kotlin-gradle-plugin-idea/src/main/kotlin/org/jetbrains/kotlin/gradle/kpm/idea/IdeaKpmSourceDirectory.kt
+++ b/libraries/tools/kotlin-gradle-plugin-idea/src/main/kotlin/org/jetbrains/kotlin/gradle/kpm/idea/IdeaKpmSourceDirectory.kt
@@ -5,17 +5,28 @@
 
 package org.jetbrains.kotlin.gradle.kpm.idea
 
+import org.jetbrains.kotlin.tooling.core.Extras
+import org.jetbrains.kotlin.tooling.core.emptyExtras
 import java.io.File
 import java.io.Serializable
 
 sealed interface IdeaKpmSourceDirectory : Serializable {
+    val extras: Extras
     val file: File
+    val type: String
+
+    companion object {
+        const val SOURCE_TYPE = "source"
+        const val RESOURCE_TYPE = "resource"
+    }
 }
 
 @InternalKotlinGradlePluginApi
 data class IdeaKpmSourceDirectoryImpl(
     override val file: File,
-) : IdeaKpmSourceDirectory {
+    override val type: String,
+    override val extras: Extras = emptyExtras(),
+    ) : IdeaKpmSourceDirectory {
 
     @InternalKotlinGradlePluginApi
     companion object {