scala 2.9.1 + sbt 0.11 + Intellij IDEA (10/11) + scala continuations plugin

It took me some time to figure out how to compile a project in Intellij IDEA with the scala continuations plugin turned on. I was getting this error when I ran the project:

bad option: -P:continuations:enable

Here is what you need to do to make it work:

1. In your build.sbt file add:

   autoCompilerPlugins := true
   
   addCompilerPlugin("org.scala-lang.plugins" % "continuations" % "2.9.1")
   
   scalacOptions += "-P:continuations:enable"

2. In sbt run

   reload

   and then

   update

3. Generate the Intellij IDEA project using the sbt command

   gen-idea

4. Open the Intellij IDEA project and go to “Project Structure” -> “Modules” ->”Scala” and add the continuations plugin jar file in the “Compiler Plugins” pane. The jar should be in ~/.ivy2/cache/org.scala-lang.plugins/continuations/jars/continuations-2.9.1.jar .
5. Tick the “Enable Continuations” option in the “Compiler Options” pane.