Scala Standard Parser Combinator Library
As of Scala 2.11, this library is a separate jar that can be omitted from Scala projects that do not use Parser Combinators.
To depend on scala-parser-combinators in SBT, add something like this to your build.sbt:
libraryDependencies += "org.scala-lang.modules" %% "scala-parser-combinators" % "1.0.1"
(Assuming you're using a scalaVersion
for which a scala-parser-combinators is published. The first 2.11 milestone for which this is true is 2.11.0-M4.)
To support multiple Scala versions, see the example in https://github.com/scala/scala-module-dependency-sample.