Set apiVersion and languageVersion back to 1.4, because atomicfu-gradle-plugin should be compatible with the Kotlin version provided in Gradle.

Author: mvicsokolova

atomicfu-gradle-plugin/build.gradle

@@ -14,8 +14,8 @@ if (rootProject.ext.jvm_ir_enabled) {
 // Gradle plugin must be compiled targeting the same Kotlin version as used by Gradle
 kotlin.sourceSets.all {
     languageSettings {
-        apiVersion = KotlinAggregateBuild.getOverriddenKotlinApiVersion(project) ?: "1.8"
-        languageVersion = KotlinAggregateBuild.getOverriddenKotlinLanguageVersion(project) ?: "1.8"
+        apiVersion = KotlinAggregateBuild.getOverriddenKotlinApiVersion(project) ?: "1.4"
+        languageVersion = KotlinAggregateBuild.getOverriddenKotlinLanguageVersion(project) ?: "1.4"
     }
 }
 

gradle/compile-options.gradle

@@ -18,8 +18,8 @@ ext.configureKotlin = { isMultiplatform ->
 
     kotlin.sourceSets.all {
         languageSettings {
-            apiVersion = KotlinAggregateBuild.getOverriddenKotlinApiVersion(project) ?: "1.8"
-            languageVersion = KotlinAggregateBuild.getOverriddenKotlinLanguageVersion(project) ?: "1.8"
+            apiVersion = KotlinAggregateBuild.getOverriddenKotlinApiVersion(project) ?: "1.4"
+            languageVersion = KotlinAggregateBuild.getOverriddenKotlinLanguageVersion(project) ?: "1.4"
         }
     }
 }