{
  val pluginVersion = System.getProperty("plugin.version")
  if(pluginVersion == null)
    throw new RuntimeException("""|The system property 'plugin.version' is not defined.
      |Specify this property using the scriptedLaunchOpts -D.""".stripMargin)
    else addSbtPlugin("org.nlogo" % "netlogo-extension-plugin" % pluginVersion)
}
