provided dependency on scala-compiler leads to runtime crashes of projects using slick

[lrytz]

Slick has a "provided" dependency on scala-compiler. This allows macros to compile, for example in ShapedValue (scala.reflect.macros.blackbox is available in scala-reflect).

The getOrElse extension method references ShapedValue. This leads to a java.lang.ClassNotFoundException: scala.reflect.api.Trees$TreeApi at runtime when using that extension method.

Workaround for users is to add libraryDependencies += "org.scala-lang" % "scala-reflect" % scalaVersion.value.

[lrytz]

reproducer: slick-t2933.zip

object Test {
  def main(args: Array[String]): Unit = {
    import slick.jdbc.H2Profile.api._
    println(slick.lifted.Rep.None[Int].getOrElse(0))
  }
}

[info] running Test
Exception in thread "sbt-bg-threads-1" java.lang.NoClassDefFoundError: scala/reflect/api/Trees$TreeApi
	at slick.lifted.AnyOptionExtensionMethods$.getOrElse$extension(ExtensionMethods.scala:219)
	at Test$.main(Test.scala:4)