generate --dependencies and --repositories arguments for spark from (effective) pom file

sparkgen.sc

import java.io._
import scala.xml.XML
import ammonite.ops._
import ammonite.ops.ImplicitWd._

val tempFile = File.createTempFile("tmp", "tmp")
tempFile.deleteOnExit()
val f = tempFile.getAbsolutePath
val res = %%('mvn, "help:effective-pom", s"-Doutput=${f}")
val xml = XML.loadFile(f)

val deps = {
(xml \\ "dependencies" \\ "dependency")
  .filter(x => (x \\ "scope").text == "compile")
  .map(x => ((x \\ "groupId").text, (x \\ "artifactId").text, (x \\ "version").text))
  .map(x => s"${x._1}:${x._2}:${x._3}")
  .toList.distinct
  .mkString(",")
}

println(s"--dependencies ${deps}")

val repos = {
(xml \\ "repositories" \\ "repository")
  .map(x => (x \\ "url").text)
  .toList.distinct
  .mkString(",")
}

println(s"--repositories $repos")