How to compile a Scala project with scons

MANIFEST

Manifest-Version: 1.0
Created-By: author-name
Main-Class: Main

SConstruct

PACKAGE_NAME = "foobar"

env = Environment(JAVAC = "scalac", JAVASUFFIX=".scala")
env.Java('classes', 'src')
env.Jar(PACKAGE_NAME, Glob("classes/*") + ["MANIFEST"])

# vim: filetype=python

tree

$ tree
.
├── MANIFEST
├── SConstruct
└── src
    ├── foo
    │   └── Bar.scala
    └── Main.scala


Generate the package with

  scons

And run it with

  scala packagename.jar

This almost works for me. Namely if I run scons twice it works. It doesn't seem to pick up the additional classes (like Main$) that scala generates in the first pass.