Scala compiler development under Eclipse

This tutorial will show you how to set up the Scala IDE in Eclipse so you can use it to work on the Scala compiler:

• Download and install the latest stable Eclipse release from eclipse.org.
• Install the Scala IDE.
  • In Eclipse go to Help -> Install New Software ... In “Work with:”, put
  • http://download.scala-ide.org/nightly-update-master-trunk (you need the nightly build of the Scala IDE)
  • Click Add. Select All. Finish steps to install.
• Tweak the settings for eclipse.ini as discussed here: https://www.assembla.com/spaces/scala-ide/wiki/Setup
• Import the Scala project in your workspace:
  • File -> Import ... Existing Projects into Workspace.
  • Pick the Scala trunk as the source directory.
  • Finish.
• Unselect Project -> Build Automatically. (Recommended.)
• Import the libraries in lib/ into the project
  • Project -> Properties.
  • Java Build Path
  • Libraries
  • Add Jars, lib/*.jar
  • Add Jars again, lib/ant/*.jar
• Set the correct properties for the source code:
  • Project -> Properties.
  • Java Build Path.
  • Source.
  • Remove all.
  • Add Folder... and select scala/src/compiler, scala/src/fjbg, scala/src/msil.
• There is one error reported in scala/src/compiler/scala/tools/nsc/io/Jar.scala where two possible implicit conversions can take place – just ignore that :)

Thanks to Hubert and Nada.