Tell SBT to collect all my dependencies together

Question

When building a web application SBT is able to collect all my jar dependencies into the WAR file.

Is this possible to have SBT put all the jars I depend on in my non-web application into a directory so I can easily put them onto my class path when running the app?

Answer 1

Yes, you can put something like this in your project definition class:

val libraryJarPath = outputPath / "lib"

def collectJarsTask = {
  val jars = mainDependencies.libraries +++ mainDependencies.scalaJars
  FileUtilities.copyFlat(jars.get, libraryJarPath, log)
}

lazy val collectJars = task { collectJarsTask; None } dependsOn(compile)

and run the task via collect-jars in your SBT console. This will copy the scala-library.jar and the jars used for compilation in a directory called lib in the same directory as your classes directory.