title: SBT sub-sub projects don't work?
body: <p>I have a build that looks like this</p>
  
  <p><code>
  thing/
    build.sbt
    clientserver/
      build.sbt
      client/
        ...
      server/
        ...
  </code></p>
  
  <p><code>
  //build.sbt
  val clientserver = project.in(file("clientserver"))...
  </code></p>
  
  <p><code>
  //clientserver/build.sbt
  val client = project.in(file("client"))...
  val server = project.in(file("server"))...
  </code></p>
  
  <p>How can I reference these sub-sub projects in the SBT console? <code>clientserver/client/compile</code> or <code>clientserver.client/compile</code> don't work</p>