commands for enabling / disabling java debugger in scala/scala

Debug.scala

package scala.build

import sbt._, Keys._, plugins._

object Debug extends AutoPlugin {
  override def requires = JvmPlugin
  override def trigger  = allRequirements

  import VersionUtil._

  override def globalSettings: Seq[Def.Setting[_]] = {
    def enableDebugger(suspend: Boolean) =
      s"-agentlib:jdwp=transport=dt_socket,server=y,suspend=${if (suspend) "y" else "n"},address=5005"
    def commandPair(name: String, scope: String, suspend: Boolean): List[Command] = {
      List(name + "On" -> "+=", name + "Off" -> "-=") map { case (cmd, op) =>
        Command.command(cmd)(s"""set javaOptions in $scope $op "${enableDebugger(suspend)}" """ :: _)
      }
    }
    val repl = if (versionProps("starr.version") startsWith "2.13") "replFrontend" else "replJlineEmbedded"
    List(
      commands ++= commandPair("replDebug",    s"run  in $repl",           suspend = false),
      commands ++= commandPair("partestDebug",  "test in IntegrationTest", suspend = true ),
    )
  }
}