Why can't IntelliJ detect the Scala Library and Compiler jars from SBT?

    If I import an sbt module, Idea prompts "Compiler library: no scala-library*.jar found".  This is particularly frustrating because it only lets me choose one dependency in the "Compiler Library" dropdown.  Why can't it have 2 drop-downs, one for the library and one for the compiler, like it allows you when you create a new module?