sbt-dependency-graph helper

DependencyGraphHelper.scala

import sbt._
import java.awt.Desktop

object DependencyGraphHelper extends Plugin {

  val openDepTree = TaskKey[Unit]("open-deptree")

  override def projectSettings = Seq(
    openDepTree in Compile <<= openDependencyTreeFor(Compile),
    openDepTree in Runtime <<= openDependencyTreeFor(Runtime),
    openDepTree in Test <<= openDependencyTreeFor(Test)
  )

  def openDependencyTreeFor(conf: Configuration): Project.Initialize[Task[Unit]] =
    (net.virtualvoid.sbt.graph.Plugin.asciiTree in conf) map { tree =>
      IO.withTemporaryFile("dep_tree_", ".txt") { f =>
        IO.write(f, tree)
        Desktop.getDesktop.open(f)
        Thread.sleep(2000)
      }
    }
}