With the IDE for Scala 2.10 you can only build the 2.10.x branch of the Scala compiler. If you want to work on master
, you need to install a 2.11-based version of the IDE. We don't publicise IDE for 2.11 nightlies yet, but they are available at:
http://download.scala-ide.org/nightly/scala-ide-master-2.11.0-SNAPSHOT/