Quick and dirty way to print added plugin to a project

logPluginWhenApplied.kt

/**
 * Print the plugin id or its class when plugin is added to the project.
 * 
 * Example usage:
 * 
 * ```kotlin
 * subprojects {
 *   logPluginWhenApplied(this)
 * }
 * ```
 * 
 * Also see https://github.com/gradle/gradle/issues/32463
 */
fun logPluginWhenApplied(project: Project) {
  val pluginRegistry = project.serviceOf<org.gradle.api.internal.plugins.PluginRegistry>()
  project.plugins.whenPluginAdded {
    val publicType = (this@whenPluginAdded as? org.gradle.api.internal.GeneratedSubclass)?.publicType()
    if (publicType == null) {
      println("[${project.name}] applied plugin do not implement org.gradle.api.internal.GeneratedSubclass : $this@whenPluginAdded")
    } else {
      pluginRegistry.findPluginForClass(publicType)
        .map { it.id }
        .ifPresentOrElse(
          { println("[${project.name}] applied plugin id, $it") },
          { println("[${project.name}] applied plugin has no id, $publicType") }
        )
    }
  }
}

fun printClassHierarchy(clazz: Class<*>, indent: String = "") {
  println("${indent}Class: ${clazz.name}")
  clazz.interfaces.forEach { intf ->
    println("${indent}  Interface: ${intf.name}")
  }
  clazz.superclass?.let { superClass ->
    printClassHierarchy(superClass, "$indent  ")
  }
}