Update KGP to 1.8.20 (#2989)

* Update KGP to 1.8.20

* Update AGP to be compatible with KGP

* Replace `AndroidSourceSet`

* Dump API

* Update integration tests

* Update GH actions tests

* Refactor Gradle Runner

* Fix `TYPE_MISMATCH_WARNING_FOR_INCORRECT_CAPTURE_APPROXIMATION`

* Suppress source sets without compilations

Dokka suppresses source sets that do no have compilation since such configuration is invalid, it reports a warning or an error

* Introduce `dependsOn` for a new `com.android.build.api.dsl.AndroidSourceSet`

* API dump

* Add comment

* Suppress remaining `TYPE_MISMATCH_WARNING_FOR_INCORRECT_CAPTURE_APPROXIMATION`

* Add comment

---------

Co-authored-by: Ignat Beresnev <ignat.beresnev@jetbrains.com>

4 files changed, 13 insertions, 6 deletions

diff --git a/runners/gradle-plugin/src/main/kotlin/org/jetbrains/dokka/gradle/GradleDokkaSourceSetBuilderExtensions.kt b/runners/gradle-plugin/src/main/kotlin/org/jetbrains/dokka/gradle/GradleDokkaSourceSetBuilderExtensions.kt
index 5c7c523b..196691af 100644
--- a/runners/gradle-plugin/src/main/kotlin/org/jetbrains/dokka/gradle/GradleDokkaSourceSetBuilderExtensions.kt
+++ b/runners/gradle-plugin/src/main/kotlin/org/jetbrains/dokka/gradle/GradleDokkaSourceSetBuilderExtensions.kt
@@ -1,6 +1,5 @@
 package org.jetbrains.dokka.gradle
 
-import com.android.build.gradle.api.AndroidSourceSet
 import org.jetbrains.kotlin.gradle.plugin.KotlinSourceSet
 
 /**
@@ -13,7 +12,14 @@ fun GradleDokkaSourceSetBuilder.dependsOn(sourceSet: KotlinSourceSet) {
 /**
  * Convenient override to **append** source sets to [GradleDokkaSourceSetBuilder.dependentSourceSets]
  */
-fun GradleDokkaSourceSetBuilder.dependsOn(sourceSet: AndroidSourceSet) {
+fun GradleDokkaSourceSetBuilder.dependsOn(@Suppress("DEPRECATION") sourceSet: com.android.build.gradle.api.AndroidSourceSet) {
+    dependsOn(DokkaSourceSetID(sourceSet.name))
+}
+
+/**
+ * Convenient override to **append** source sets to [GradleDokkaSourceSetBuilder.dependentSourceSets]
+ */
+fun GradleDokkaSourceSetBuilder.dependsOn(@Suppress("UnstableApiUsage") sourceSet: com.android.build.api.dsl.AndroidSourceSet) {
     dependsOn(DokkaSourceSetID(sourceSet.name))
 }
 
diff --git a/runners/gradle-plugin/src/main/kotlin/org/jetbrains/dokka/gradle/kotlin/isMainSourceSet.kt b/runners/gradle-plugin/src/main/kotlin/org/jetbrains/dokka/gradle/kotlin/isMainSourceSet.kt
index 15989217..c8b78367 100644
--- a/runners/gradle-plugin/src/main/kotlin/org/jetbrains/dokka/gradle/kotlin/isMainSourceSet.kt
+++ b/runners/gradle-plugin/src/main/kotlin/org/jetbrains/dokka/gradle/kotlin/isMainSourceSet.kt
@@ -11,7 +11,6 @@ internal fun Project.isMainSourceSet(sourceSet: KotlinSourceSet): Boolean {
 }
 
 internal fun isMainSourceSet(compilations: List<KotlinCompilation>): Boolean {
-    if (compilations.isEmpty()) return true
     return compilations.any { compilation -> isMainCompilation(compilation) }
 }
 
diff --git a/runners/gradle-plugin/src/main/kotlin/org/jetbrains/dokka/gradle/kotlin/kotlinClasspathUtils.kt b/runners/gradle-plugin/src/main/kotlin/org/jetbrains/dokka/gradle/kotlin/kotlinClasspathUtils.kt
index ed77324f..e05b2075 100644
--- a/runners/gradle-plugin/src/main/kotlin/org/jetbrains/dokka/gradle/kotlin/kotlinClasspathUtils.kt
+++ b/runners/gradle-plugin/src/main/kotlin/org/jetbrains/dokka/gradle/kotlin/kotlinClasspathUtils.kt
@@ -27,6 +27,8 @@ internal fun Project.classpathOf(sourceSet: KotlinSourceSet): FileCollection {
             .map { compilation -> compilation.compileClasspathOf(project = this) }
             .reduce { acc, fileCollection -> acc + fileCollection }
     } else {
+        // Dokka suppresses source sets that do no have compilations
+        // since such configuration is invalid, it reports a warning or an error
         sourceSet.withAllDependentSourceSets()
             .toList()
             .map { it.kotlin.sourceDirectories }
@@ -41,7 +43,7 @@ private fun KotlinCompilation.compileClasspathOf(project: Project): FileCollecti
 
     val platformDependencyFiles: FileCollection = (this as? AbstractKotlinNativeCompilation)
         ?.target?.project?.configurations
-        ?.findByName(this.defaultSourceSet.implementationMetadataConfigurationName)
+        ?.findByName(@Suppress("DEPRECATION") this.defaultSourceSet.implementationMetadataConfigurationName) // KT-58640
         ?: project.files()
 
     return this.compileDependencyFiles + platformDependencyFiles + this.classpathOf(project)
diff --git a/runners/gradle-plugin/src/main/kotlin/org/jetbrains/dokka/gradle/tasks/DokkaMultiModuleTask.kt b/runners/gradle-plugin/src/main/kotlin/org/jetbrains/dokka/gradle/tasks/DokkaMultiModuleTask.kt
index c1697ac1..7d6f60d2 100644
--- a/runners/gradle-plugin/src/main/kotlin/org/jetbrains/dokka/gradle/tasks/DokkaMultiModuleTask.kt
+++ b/runners/gradle-plugin/src/main/kotlin/org/jetbrains/dokka/gradle/tasks/DokkaMultiModuleTask.kt
@@ -92,8 +92,8 @@ abstract class DokkaMultiModuleTask : AbstractDokkaParentTask() {
             outputDir = outputDirectory.asFile.get(),
             cacheRoot = cacheRoot.asFile.orNull,
             pluginsConfiguration = buildPluginsConfiguration(),
-        failOnWarning = failOnWarning.get(),
-        offlineMode = offlineMode.get(),
+            failOnWarning = failOnWarning.get(),
+            offlineMode = offlineMode.get(),
             pluginsClasspath = plugins.resolve().toList(),
             modules = childDokkaTasks.map { dokkaTask ->
                 DokkaModuleDescriptionImpl(