Enabling DCEVM and Hotswap Agent in SBT + sbt-revolver plugin

build.sbt

val hotswapAgentJarPath = Def.settingKey[Option[String]]("Path to hotswap-agent.jar, enables DCEVM in run and reStart")

// set hotswapAgentJarPath := Some("/Users/lbedubourg/local/hotswap-agent.jar")
hotswapAgentJarPath := sys.env.get("HOTSWAP_AGENT_JAR")

def hotswapJavaOptions(path: Option[String]) = path match {
  case None => Seq()
  case Some(p) => Seq("-XXaltjvm=dcevm", s"-javaagent:${p}=autoHotswap=true")
}

// fork is required to get a new jvm with our custom args
fork in run := true

// add DCEVM jvm args to run task when hotswapAgentJarPath is defined
javaOptions in run <++= hotswapAgentJarPath map hotswapJavaOptions

// add DCEVM jvm args to sbt-revolver reStart task when hotswapAgentJarPath is defined
javaOptions in reStart <++= hotswapAgentJarPath map hotswapJavaOptions