sbt launchconfig issue

build.sbt

organization := "org.dummy"

name := "dummy"

version := "0.1.0-SNAPSHOT"

scalaVersion := "2.10.4"

libraryDependencies ++= Seq(
  "org.eclipse.jetty.orbit" % "javax.servlet" % "3.0.0.v201112011016"
)

conscript.Harness.conscriptSettings

dummy

#!/bin/sh
java -jar "$HOME/.conscript/sbt-launch.jar" "@$HOME/.conscript/dummy/dummy/dummy/launchconfig" "$@"

Dummy.scala

import java.util.Locale
import javax.servlet.http.{Cookie, HttpServletResponse}

class Dummy extends xsbti.AppMain {
  def run(config: xsbti.AppConfiguration) =
    try {
      // Creating a dummy HttpServletResponse
      //  - succeeds from sbt run or sbt console
      //  - fails through launchconfig using the `dummy` script below (NoClassDefFound exception)
      val r = new HttpServletResponse {
        def sendError(sc: Int, msg: String) = ???
        def sendError(sc: Int) = ???
        def containsHeader(name: String) = ???
        def addHeader(name: String, value: String) = ???
        def setStatus(sc: Int) = ???
        def setStatus(sc: Int, sm: String) = ???
        def getHeaderNames = ???
        def addIntHeader(name: String, value: Int) = ???
        def encodeURL(url: String) = ???
        def addCookie(cookie: Cookie) = ???
        def addDateHeader(name: String, date: Long) = ???
        def setDateHeader(name: String, date: Long) = ???
        def getStatus = ???
        def encodeRedirectUrl(url: String) = ???
        def getHeaders(name: String) = ???
        def sendRedirect(location: String) = ???
        def setHeader(name: String, value: String) = ???
        def setIntHeader(name: String, value: Int) = ???
        def encodeRedirectURL(url: String) = ???
        def encodeUrl(url: String) = ???
        def getHeader(name: String) = ???
        def getLocale = ???
        def isCommitted = ???
        def setBufferSize(size: Int) = ???
        def setContentLength(len: Int) = ???
        def setContentType(`type`: String) = ???
        def resetBuffer() = ???
        def getCharacterEncoding = ???
        def setCharacterEncoding(charset: String) = ???
        def getOutputStream = ???
        def getWriter = ???
        def flushBuffer() = ???
        def setLocale(loc: Locale) = ???
        def getContentType = ???
        def reset() = ???
        def getBufferSize = ???
      }

      Console.err println s"$r"

      Exit(0)
    } catch {
      case _: Exception =>
        Exit(1)
    }

  case class Exit(code: Int) extends xsbti.Exit
}

launchconfig

# Should go in $HOME/.conscript/dummy/dummy/dummy/
[app]
  version: 0.1.0-SNAPSHOT
  org: org.dummy
  name: dummy
  class: Dummy
[scala]
  version: 2.10.4
[repositories]
  local
  maven-central
  sonatype-releases: https://oss.sonatype.org/content/repositories/releases/
  sonatype-snapshots: https://oss.sonatype.org/content/repositories/snapshots/
[boot]
  directory: /home/alexandre/.conscript/boot

plugins.sbt

// Should go in project/

addSbtPlugin("net.databinder" % "conscript-plugin" % "0.3.5")