stuff

buildSrc/src/main/kotlin/Libs.kt

@@ -9,10 +9,7 @@ object Libs {
         const val fx = "io.arrow-kt:arrow-fx:$version"
     }
 
-    object EclipseCollection {
-        const val api = "org.eclipse.collections:eclipse-collections-api:10.4.0"
-        const val core = "org.eclipse.collections:eclipse-collections:10.4.0"
-    }
+    const val eclipseCollections = "org.eclipse.collections:eclipse-collections:10.4.0"
 
     object Jmh {
         const val core = "org.openjdk.jmh:jmh-core:1.26"
@@ -29,7 +26,7 @@ object Libs {
 
     object Slf4J {
         const val api = "org.slf4j:slf4j-api:1.7.25"
-        const val logback = "ch.qos.logback:logback-classic:1.2.3"
+        const val simple = "org.slf4j:slf4j-simple:1.7.30"
         const val kotlin = "io.github.microutils:kotlin-logging-jvm:2.0.3"
     }
 

buildSrc/src/main/kotlin/kotlin-convention.gradle.kts

@@ -12,7 +12,7 @@ dependencies {
 
 tasks.withType<KotlinCompile> {
     kotlinOptions {
-        jvmTarget = "15"
+        jvmTarget = "14"
         javaParameters = true
         freeCompilerArgs = listOf(
             "-Xinline-classes",