diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/KotlinDependenciesManagement.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/KotlinDependenciesManagement.kt
index a92ebadc3c7..a3c7e45e553 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/KotlinDependenciesManagement.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/KotlinDependenciesManagement.kt
@@ -28,9 +28,9 @@ import org.jetbrains.kotlin.gradle.execution.KotlinAggregateExecutionSource
 import org.jetbrains.kotlin.gradle.plugin.*
 import org.jetbrains.kotlin.gradle.plugin.PropertiesProvider
 import org.jetbrains.kotlin.gradle.plugin.mpp.*
-import org.jetbrains.kotlin.gradle.plugin.mpp.CompilationSourceSetUtil
 import org.jetbrains.kotlin.gradle.plugin.sources.KotlinDependencyScope
-import org.jetbrains.kotlin.gradle.plugin.sources.getSourceSetHierarchy
+import org.jetbrains.kotlin.gradle.plugin.sources.withAllDependsOnSourceSets
+import org.jetbrains.kotlin.gradle.plugin.sources.resolveAllDependsOnSourceSets
 import org.jetbrains.kotlin.gradle.plugin.sources.sourceSetDependencyConfigurationByScope
 import org.jetbrains.kotlin.gradle.targets.jvm.JvmCompilationsTestRunSource
 import org.jetbrains.kotlin.gradle.tasks.KOTLIN_MODULE_GROUP
@@ -91,11 +91,10 @@ private fun chooseAndAddStdlibDependency(
     val sourceSetDependencyConfigurations =
         KotlinDependencyScope.values().map { project.sourceSetDependencyConfigurationByScope(kotlinSourceSet, it) }
 
-    val hierarchySourceSetsDependencyConfigurations = kotlinSourceSet.getSourceSetHierarchy().flatMap { hierarchySourceSet ->
-        if (hierarchySourceSet === kotlinSourceSet) emptyList() else
-            KotlinDependencyScope.values().map { scope ->
-                project.sourceSetDependencyConfigurationByScope(hierarchySourceSet, scope)
-            }
+    val hierarchySourceSetsDependencyConfigurations = kotlinSourceSet.resolveAllDependsOnSourceSets().flatMap { hierarchySourceSet ->
+        KotlinDependencyScope.values().map { scope ->
+            project.sourceSetDependencyConfigurationByScope(hierarchySourceSet, scope)
+        }
     }
 
     val compilations = CompilationSourceSetUtil.compilationsBySourceSets(project).getValue(kotlinSourceSet)
@@ -216,7 +215,7 @@ internal fun configureKotlinTestDependency(project: Project) {
 
             project.tryWithDependenciesIfUnresolved(configuration) { dependencies ->
                 val parentOrOwnVersions: List<String?> =
-                    kotlinSourceSet.getSourceSetHierarchy().filter(versionOrNullBySourceSet::contains).map(versionOrNullBySourceSet::get)
+                    kotlinSourceSet.withAllDependsOnSourceSets().filter(versionOrNullBySourceSet::contains).map(versionOrNullBySourceSet::get)
 
                 finalizingDependencies = true
 
@@ -310,7 +309,7 @@ private fun KotlinTargetWithTests<*, *>.findTestRunsByCompilation(byCompilation:
 //endregion
 
 private fun Project.kotlinDependency(moduleName: String, versionOrNull: String?) =
-        project.dependencies.create("$KOTLIN_MODULE_GROUP:$moduleName${versionOrNull?.prependIndent(":").orEmpty()}")
+    project.dependencies.create("$KOTLIN_MODULE_GROUP:$moduleName${versionOrNull?.prependIndent(":").orEmpty()}")
 
 private fun Project.tryWithDependenciesIfUnresolved(configuration: Configuration, action: (DependencySet) -> Unit) {
     fun reportAlreadyResolved() {
@@ -328,4 +327,4 @@ private fun Project.tryWithDependenciesIfUnresolved(configuration: Configuration
     } catch (e: InvalidUserDataException) {
         reportAlreadyResolved()
     }
-}
\ No newline at end of file
+}
diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/KotlinProjectStructureMetadata.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/KotlinProjectStructureMetadata.kt
index 6651d20687d..56bab015773 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/KotlinProjectStructureMetadata.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/KotlinProjectStructureMetadata.kt
@@ -15,7 +15,7 @@ import org.gradle.api.tasks.Internal
 import org.gradle.api.tasks.Nested
 import org.jetbrains.kotlin.gradle.dsl.multiplatformExtensionOrNull
 import org.jetbrains.kotlin.gradle.plugin.sources.KotlinDependencyScope
-import org.jetbrains.kotlin.gradle.plugin.sources.getSourceSetHierarchy
+import org.jetbrains.kotlin.gradle.plugin.sources.withAllDependsOnSourceSets
 import org.jetbrains.kotlin.gradle.plugin.sources.sourceSetDependencyConfigurationByScope
 import org.jetbrains.kotlin.gradle.targets.metadata.getPublishedPlatformCompilations
 import org.w3c.dom.Document
@@ -116,7 +116,7 @@ internal fun buildKotlinProjectStructureMetadata(project: Project): KotlinProjec
              */
             val isNativeSharedSourceSet = sourceSetsWithMetadataCompilations[sourceSet] is KotlinSharedNativeCompilation
             val sourceSetExportedDependencies = when {
-                isNativeSharedSourceSet -> sourceSet.getSourceSetHierarchy().flatMap { hierarchySourceSet ->
+                isNativeSharedSourceSet -> sourceSet.withAllDependsOnSourceSets().flatMap { hierarchySourceSet ->
                     listOf(KotlinDependencyScope.API_SCOPE, KotlinDependencyScope.IMPLEMENTATION_SCOPE).flatMap { scope ->
                         project.sourceSetDependencyConfigurationByScope(hierarchySourceSet, scope).allDependencies.toList()
                     }
@@ -327,4 +327,4 @@ private const val SOURCE_SET_NODE_NAME = "sourceSet"
 private const val DEPENDS_ON_NODE_NAME = "dependsOn"
 private const val MODULE_DEPENDENCY_NODE_NAME = "moduleDependency"
 private const val BINARY_LAYOUT_NODE_NAME = "binaryLayout"
-private const val HOST_SPECIFIC_NODE_NAME = "hostSpecific"
\ No newline at end of file
+private const val HOST_SPECIFIC_NODE_NAME = "hostSpecific"
diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/TransformKotlinGranularMetadata.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/TransformKotlinGranularMetadata.kt
index 2840cf1f053..14dff6f1574 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/TransformKotlinGranularMetadata.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/TransformKotlinGranularMetadata.kt
@@ -12,7 +12,7 @@ import org.jetbrains.kotlin.gradle.dsl.kotlinExtension
 import org.jetbrains.kotlin.gradle.plugin.KotlinCompilation
 import org.jetbrains.kotlin.gradle.plugin.KotlinSourceSet
 import org.jetbrains.kotlin.gradle.plugin.sources.KotlinDependencyScope.*
-import org.jetbrains.kotlin.gradle.plugin.sources.getSourceSetHierarchy
+import org.jetbrains.kotlin.gradle.plugin.sources.withAllDependsOnSourceSets
 import org.jetbrains.kotlin.gradle.targets.metadata.ALL_COMPILE_METADATA_CONFIGURATION_NAME
 import org.jetbrains.kotlin.gradle.targets.metadata.KotlinMetadataTargetConfigurator
 import org.jetbrains.kotlin.gradle.utils.getValue
@@ -39,7 +39,7 @@ open class TransformKotlinGranularMetadata
     }
 
     private val participatingSourceSets: Set<KotlinSourceSet>
-        get() = transformation.kotlinSourceSet.getSourceSetHierarchy().toMutableSet().apply {
+        get() = transformation.kotlinSourceSet.withAllDependsOnSourceSets().toMutableSet().apply {
             if (any { it.name == KotlinSourceSet.COMMON_MAIN_SOURCE_SET_NAME })
                 add(project.kotlinExtension.sourceSets.getByName(KotlinSourceSet.COMMON_MAIN_SOURCE_SET_NAME))
         }
@@ -116,4 +116,4 @@ open class TransformKotlinGranularMetadata
 
         extractableFiles.forEach { it.getMetadataFilesPerSourceSet(doProcessFiles = true) }
     }
-}
\ No newline at end of file
+}
diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/kotlinCompilations.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/kotlinCompilations.kt
index 2ef37a7bd47..15e12ea9359 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/kotlinCompilations.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/kotlinCompilations.kt
@@ -6,7 +6,10 @@
 package org.jetbrains.kotlin.gradle.plugin.mpp
 
 import groovy.lang.Closure
-import org.gradle.api.*
+import org.gradle.api.GradleException
+import org.gradle.api.Project
+import org.gradle.api.Task
+import org.gradle.api.UnknownTaskException
 import org.gradle.api.attributes.AttributeContainer
 import org.gradle.api.execution.TaskExecutionListener
 import org.gradle.api.file.FileCollection
@@ -21,7 +24,8 @@ import org.jetbrains.kotlin.gradle.dsl.*
 import org.jetbrains.kotlin.gradle.plugin.*
 import org.jetbrains.kotlin.gradle.plugin.mpp.internal.KotlinCompilationsModuleGroups
 import org.jetbrains.kotlin.gradle.plugin.sources.defaultSourceSetLanguageSettingsChecker
-import org.jetbrains.kotlin.gradle.plugin.sources.getSourceSetHierarchy
+import org.jetbrains.kotlin.gradle.plugin.sources.withAllDependsOnSourceSets
+import org.jetbrains.kotlin.gradle.plugin.sources.resolveAllDependsOnSourceSets
 import org.jetbrains.kotlin.gradle.tasks.AbstractKotlinCompile
 import org.jetbrains.kotlin.gradle.tasks.locateTask
 import org.jetbrains.kotlin.gradle.utils.*
@@ -66,7 +70,7 @@ abstract class AbstractKotlinCompilation<T : KotlinCommonOptions>(
     override val kotlinSourceSets: MutableSet<KotlinSourceSet> = mutableSetOf()
 
     override val allKotlinSourceSets: Set<KotlinSourceSet>
-        get() = kotlinSourceSets.flatMapTo(mutableSetOf()) { it.getSourceSetHierarchy() }
+        get() = kotlinSourceSets + kotlinSourceSets.resolveAllDependsOnSourceSets()
 
     override val defaultSourceSetName: String
         get() = lowerCamelCaseName(
@@ -146,7 +150,7 @@ abstract class AbstractKotlinCompilation<T : KotlinCommonOptions>(
     final override fun source(sourceSet: KotlinSourceSet) {
         if (kotlinSourceSets.add(sourceSet)) {
             target.project.whenEvaluated {
-                addExactSourceSetsEagerly(sourceSet.getSourceSetHierarchy())
+                addExactSourceSetsEagerly(sourceSet.withAllDependsOnSourceSets())
             }
         }
     }
diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/sources/DefaultKotlinSourceSet.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/sources/DefaultKotlinSourceSet.kt
index 09e62d976e5..f54d4dc3f91 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/sources/DefaultKotlinSourceSet.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/sources/DefaultKotlinSourceSet.kt
@@ -20,6 +20,7 @@ import org.jetbrains.kotlin.gradle.plugin.whenEvaluated
 import org.jetbrains.kotlin.gradle.utils.*
 import java.io.File
 import java.util.*
+import kotlin.collections.HashSet
 
 const val METADATA_CONFIGURATION_NAME_SUFFIX = "DependenciesMetadata"
 
@@ -230,23 +231,18 @@ internal fun KotlinSourceSet.disambiguateName(simpleName: String): String {
 private fun createDefaultSourceDirectorySet(project: Project, name: String?): SourceDirectorySet =
     project.objects.sourceDirectorySet(name, name)
 
+/**
+ * Like [resolveAllDependsOnSourceSets] but will include the receiver source set also!
+ */
+internal fun KotlinSourceSet.withAllDependsOnSourceSets(): Set<KotlinSourceSet> {
+    return this + this.resolveAllDependsOnSourceSets()
+}
 
-@Deprecated(
-    "Use 'getAllDependsOnSourceSets' instead",
-    level = DeprecationLevel.WARNING,
-    replaceWith = ReplaceWith("getAllDependsOnSourceSets")
-)
-internal fun KotlinSourceSet.getSourceSetHierarchy(): Set<KotlinSourceSet> {
-    val result = mutableSetOf<KotlinSourceSet>()
-
-    fun processSourceSet(sourceSet: KotlinSourceSet) {
-        if (result.add(sourceSet)) {
-            sourceSet.dependsOn.forEach { processSourceSet(it) }
-        }
+internal operator fun KotlinSourceSet.plus(sourceSets: Set<KotlinSourceSet>): Set<KotlinSourceSet> {
+    return HashSet<KotlinSourceSet>(sourceSets.size + 1).also { set ->
+        set.add(this)
+        set.addAll(sourceSets)
     }
-
-    processSourceSet(this)
-    return result
 }
 
 internal fun KotlinSourceSet.resolveAllDependsOnSourceSets(): Set<KotlinSourceSet> {
diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/sources/SourceSetsVisibilityInference.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/sources/SourceSetsVisibilityInference.kt
index ab5793cb255..1853429b120 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/sources/SourceSetsVisibilityInference.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/sources/SourceSetsVisibilityInference.kt
@@ -140,7 +140,7 @@ internal fun checkSourceSetVisibilityRequirements(
         val inferredVisibility =
             getVisibleSourceSetsFromAssociateCompilations(compilationsBySourceSet[sourceSet].orEmpty())
 
-        val requiredButNotVisible = requiredVisibility - inferredVisibility - sourceSet.getSourceSetHierarchy()
+        val requiredButNotVisible = requiredVisibility - inferredVisibility - sourceSet.withAllDependsOnSourceSets()
 
         if (requiredButNotVisible.isNotEmpty()) {
             val compilations = compilationsBySourceSet.getValue(sourceSet)
@@ -153,4 +153,4 @@ internal fun checkSourceSetVisibilityRequirements(
             )
         }
     }
-}
\ No newline at end of file
+}
diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/metadata/KotlinMetadataTargetConfigurator.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/metadata/KotlinMetadataTargetConfigurator.kt
index 18edd842078..dcda3359b7d 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/metadata/KotlinMetadataTargetConfigurator.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/metadata/KotlinMetadataTargetConfigurator.kt
@@ -260,7 +260,7 @@ class KotlinMetadataTargetConfigurator(kotlinPluginVersion: String) :
              * See also: [buildKotlinProjectStructureMetadata], where these dependencies must be included into the source set exported deps.
              */
             if (isSharedNativeCompilation) {
-                sourceSet.getSourceSetHierarchy().forEach { hierarchySourceSet ->
+                sourceSet.withAllDependsOnSourceSets().forEach { hierarchySourceSet ->
                     apiElementsConfiguration.extendsFrom(
                         sourceSetDependencyConfigurationByScope(hierarchySourceSet, KotlinDependencyScope.IMPLEMENTATION_SCOPE)
                     )
@@ -438,7 +438,7 @@ class KotlinMetadataTargetConfigurator(kotlinPluginVersion: String) :
             project.provider {
                 val sourceSet = compilation.defaultSourceSet
 
-                val transformationTaskHolders = sourceSet.getSourceSetHierarchy().mapNotNull { hierarchySourceSet ->
+                val transformationTaskHolders = sourceSet.withAllDependsOnSourceSets().mapNotNull { hierarchySourceSet ->
                     project.locateTask<TransformKotlinGranularMetadata>(transformGranularMetadataTaskName(hierarchySourceSet.name))
                 }
 
@@ -455,9 +455,9 @@ class KotlinMetadataTargetConfigurator(kotlinPluginVersion: String) :
                 val transformedFilesByResolution: Map<MetadataDependencyResolution, FileCollection> =
                     transformationTaskHolders.flatMap { it.get().filesByResolution.toList() }.toMap()
 
-                val dependsOnCompilationOutputs = sourceSet.getSourceSetHierarchy().mapNotNull { hierarchySourceSet ->
+                val dependsOnCompilationOutputs = sourceSet.resolveAllDependsOnSourceSets().mapNotNull { hierarchySourceSet ->
                     val dependencyCompilation = project.getMetadataCompilationForSourceSet(hierarchySourceSet)
-                    dependencyCompilation?.output?.classesDirs.takeIf { hierarchySourceSet != sourceSet }
+                    dependencyCompilation?.output?.classesDirs
                 }
 
                 val artifactView = fromFiles.incoming.artifactView { view ->
diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/native/KotlinNativeCompilation.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/native/KotlinNativeCompilation.kt
index e2ec2f2d765..be8032d369c 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/native/KotlinNativeCompilation.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/native/KotlinNativeCompilation.kt
@@ -15,8 +15,8 @@ import org.gradle.api.tasks.TaskProvider
 import org.gradle.util.ConfigureUtil
 import org.jetbrains.kotlin.gradle.dsl.KotlinCommonOptions
 import org.jetbrains.kotlin.gradle.plugin.*
-import org.jetbrains.kotlin.gradle.plugin.sources.getSourceSetHierarchy
 import org.jetbrains.kotlin.gradle.plugin.sources.getVisibleSourceSetsFromAssociateCompilations
+import org.jetbrains.kotlin.gradle.plugin.sources.resolveAllDependsOnSourceSets
 import org.jetbrains.kotlin.gradle.targets.metadata.getMetadataCompilationForSourceSet
 import org.jetbrains.kotlin.gradle.tasks.KotlinNativeCompile
 import org.jetbrains.kotlin.gradle.utils.lowerCamelCaseName
@@ -120,9 +120,8 @@ class KotlinSharedNativeCompilation(override val target: KotlinMetadataTarget, v
             val friendSourceSets = getVisibleSourceSetsFromAssociateCompilations(project, defaultSourceSet).toMutableSet().apply {
                 // TODO: implement proper dependsOn/refines compiler args for Kotlin/Native and pass the dependsOn klibs separately;
                 //       But for now, those dependencies don't have any special semantics, so passing all them as friends works, too
-                addAll(defaultSourceSet.getSourceSetHierarchy())
-                remove(defaultSourceSet)
+                addAll(defaultSourceSet.resolveAllDependsOnSourceSets())
             }
             project.files(friendSourceSets.mapNotNull { project.getMetadataCompilationForSourceSet(it)?.output?.classesDirs })
         })
-}
\ No newline at end of file
+}
diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/KotlinCompileCommon.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/KotlinCompileCommon.kt
index 146ce7ca6fb..28da1d84902 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/KotlinCompileCommon.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/KotlinCompileCommon.kt
@@ -33,7 +33,7 @@ import org.jetbrains.kotlin.gradle.logging.GradlePrintingMessageCollector
 import org.jetbrains.kotlin.gradle.plugin.KotlinSourceSet
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinCommonCompilation
 import org.jetbrains.kotlin.gradle.utils.getValue
-import org.jetbrains.kotlin.gradle.plugin.sources.getSourceSetHierarchy
+import org.jetbrains.kotlin.gradle.plugin.sources.resolveAllDependsOnSourceSets
 import org.jetbrains.kotlin.incremental.ChangedFiles
 import java.io.File
 
@@ -90,7 +90,7 @@ open class KotlinCompileCommon : AbstractKotlinCompile<K2MetadataCompilerArgumen
     @get:PathSensitive(PathSensitivity.RELATIVE)
     @get:InputFiles
     internal val refinesMetadataPaths by project.provider {
-        outputPathsFromMetadataCompilationsOf(defaultKotlinSourceSet.getSourceSetHierarchy().minus(defaultKotlinSourceSet))
+        outputPathsFromMetadataCompilationsOf(defaultKotlinSourceSet.resolveAllDependsOnSourceSets())
     }
 
     override fun callCompilerAsync(args: K2MetadataCompilerArguments, sourceRoots: SourceRoots, changedFiles: ChangedFiles) {