Trying to cross compile a project to Scala 2.11 fails with “error while loading Object, Missing dependency 'object scala in compiler mirror'”

Question

I\'m trying to compile my project to Scala 2.10 and 2.11 so that I can release versions for both scala versions, but every time I try to do it it fails with the following me

Answer 1

The problem is very simple, in your Build.scala, you did almost all right, but in commons project you had overridden default commonDependencies. By default it contains dependency to scala-library.

This piece of code

lazy val common = Project(
    id = commonName,
    base = file(commonName),
    settings = Configuration.baseSettings ++ Seq(
      name := commonName,
      libraryDependencies := Configuration.commonDependencies // #1
    )
  )

at the element marked as #1 should have

libraryDependencies ++= Configuration.commonDependencies

Ps. I've sent you a pull request with the fix.