I installed scalaIDE on ubuntu. as installed, it has both scala 2.11.6 and 2.10.5 build in. The version I need is 2.10.4. How do I add that version into scalaIDE?
Window -> Preferences -> Scala -> Installations
Click Add. Probably you will already have the version of scala you need in ~/.sbt/boot
. Just choose, name it and click Ok.
Reference: BYOS (Bring Your Own Scala)