Scala project preparation for dist archive

gistfile1.scala

  val chiShape = RootProject(file("vendor/chi-shape"))
  val kdTree = RootProject(file("vendor/kdtree"))
  val messaging = RootProject(file("vendor/messaging"))
  val datadog = RootProject(file("vendor/datadog-metrics-client"))
  val logbackLayout = RootProject(file("vendor/logback-layout"))

        dist <<= (
          dist,
          packageBin in Compile in chiShape,
          packageBin in Compile in kdTree,
          packageBin in Compile in datadog,
          packageBin in Compile in messaging,
          packageBin in Compile in logbackLayout,
          streams
        ) map { (out, chiPkg, kdPkg, datadog, messaging, logbackLayout, s) =>
          val outLibDir = out / "lib"
          s.log.info(
            "Add subproject packages to %s.".format(outLibDir.getCanonicalPath)
          )
          IO.copyFile(chiPkg, outLibDir / chiPkg.getName)
          IO.copyFile(kdPkg, outLibDir / kdPkg.getName)
          IO.copyFile(datadog, outLibDir / datadog.getName)
          IO.copyFile(messaging, outLibDir / messaging.getName)
          IO.copyFile(logbackLayout, outLibDir / logbackLayout.getName)

          s.log.info("Removing unneeded files.")
          IO.delete(Seq(
            out / "bin" / "start",
            out / "bin" / "start.bat",
            out / "config" / "application.conf"
          ))

          s.log.info("Copying custom data.")
          IO.copyDirectory(libDir / "deploy" / "data", out, overwrite = true)

          s.log.info("Setting executable bits.")
          Seq(
            out / "bin" / "start", out / "bin" / "cli", out / "daemon"
          ).foreach { file =>
            Files.setPosixFilePermissions(file.toPath, Modes.m755)
          }

          out
        },
        distArchiveTask(dist, format = FileFormat.Tar),