Scala ant build script (OS X with brew install of scala)

build.xml

<project name="scalaIsAwesome" basedir="." default="build">
  <property name="scala-compiler.jar"
    value="/usr/local/Cellar/scala/2.8.1/libexec/lib/scala-compiler.jar"/>
  <property name="scala-library.jar" 
    value="/usr/local/Cellar/scala/2.8.1/libexec/lib/scala-library.jar"/>
  <path id="scala.classpath">
    <pathelement location="${scala-compiler.jar}"/>
    <pathelement location="${scala-library.jar}"/>
  </path>
  <taskdef resource="scala/tools/ant/antlib.xml">
    <classpath refid="scala.classpath"/>
  </taskdef>
  <target name="build">
      <mkdir dir="build"   />
      <scalac srcdir="src"
              destdir="build"
              classpathref="scala.classpath">
      </scalac>
    </target>  
</project>