title: Debug not working with play framework activator, scala and eclipse
body: <p>There are many posts on this, the instructions are straight forward, but for the life of me I can't get the debugger to stop at breakpoints.</p>
  
  <p>My environment is</p>
  
  <ul>
  <li>eclipse 4.4.1</li>
  <li>scala 2.11</li>
  <li>scala IDE 4.1.0.nightly</li>
  <li>play framework 2.3.3</li>
  <li>play support in Scala IDE 0.4.6</li>
  </ul>
  
  <p>I launch activator as follows</p>
  
  <pre><code>activator -jvm-debug 9999 run
  </code></pre>
  
  <p>I have set up a remote java application debug configuration with standard socket attach. The debug configuration runs, attaches to the remote and launches a bunch of sbt threads.</p>
  
  <p>But, it will not stop in the debugger! It doesn't seem that hard, what am I doing wrong?</p>
  
  <p>Edit:
  I have this problem in a project I've been working on for a while and in a brand new, untouched instantiation of the play-anguale-require-seed project. Here is the build.sbt for that project:</p>
  
  <pre><code>import WebKeys._
  
  // TODO Replace with your project's/module's name
  name := """play-angular-require-seed"""
  
  // TODO Set your organization here; ThisBuild means it will apply to all sub-    modules
  organization in ThisBuild := "your.organization"
  
  // TODO Set your version here
  version := "2.3.7-SNAPSHOT"
  
  // Scala Version, Play supports both 2.10 and 2.11
  //scalaVersion := "2.10.4"
  scalaVersion := "2.11.4"
  
  lazy val root = (project in file(".")).enablePlugins(PlayScala)
  
  // Dependencies
  libraryDependencies ++= Seq(
    filters,
    cache,
    // WebJars (i.e. client-side) dependencies
    "org.webjars" % "requirejs" % "2.1.14-1",
    "org.webjars" % "underscorejs" % "1.6.0-3",
    "org.webjars" % "jquery" % "1.11.1",
    "org.webjars" % "bootstrap" % "3.1.1-2" exclude("org.webjars", "jquery"),
    "org.webjars" % "angularjs" % "1.2.18" exclude("org.webjars", "jquery")
  )
  
  // Scala Compiler Options
  scalacOptions in ThisBuild ++= Seq(
    "-target:jvm-1.7",
    "-encoding", "UTF-8",
    "-deprecation", // warning and location for usages of deprecated APIs
    "-feature", // warning and location for usages of features that should be                 imported explicitly
    "-unchecked", // additional warnings where generated code depends on assumptions
    "-Xlint", // recommended additional warnings
    "-Ywarn-adapted-args", // Warn if an argument list is modified to match the receiver
    "-Ywarn-value-discard", // Warn when non-Unit expression results are unused
    "-Ywarn-inaccessible",
    "-Ywarn-dead-code"
  )
  
  //
  // sbt-web configuration
  // https://github.com/sbt/sbt-web
  //
  
  // Configure the steps of the asset pipeline (used in stage and dist tasks)
  // rjs = RequireJS, uglifies, shrinks to one file, replaces WebJars with CDN
  // digest = Adds hash to filename
  // gzip = Zips all assets, Asset controller serves them automatically when client accepts them
  pipelineStages := Seq(rjs, digest, gzip)
  
  // RequireJS with sbt-rjs (https://github.com/sbt/sbt-rjs#sbt-rjs)
  // ~~~
  RjsKeys.paths += ("jsRoutes" -&gt; ("/jsroutes" -&gt; "empty:"))
  
  //RjsKeys.mainModule := "main"
  
  // Asset hashing with sbt-digest (https://github.com/sbt/sbt-digest)
  // ~~~
  // md5 | sha1
  //DigestKeys.algorithms := "md5"
  //includeFilter in digest := "..."
  //excludeFilter in digest := "..."
  
  // HTTP compression with sbt-gzip (https://github.com/sbt/sbt-gzip)
  // ~~~
  // includeFilter in GzipKeys.compress := "*.html" || "*.css" || "*.js"
  // excludeFilter in GzipKeys.compress := "..."
  
  // JavaScript linting with sbt-jshint (https://github.com/sbt/sbt-jshint)
  // ~~~
  // JshintKeys.config := ".jshintrc"
  
  // All work and no play...
  emojiLogs
  
  
  fork in run := true
  </code></pre>