SBT sources in IDEA

Question

I'm using *.scala files in the project folder for configuring my SBT project. I'm using IDEA12 with the Scala Plugin and sbt-idea for generating the project. After calling gen-idea in the SBT shell, everything works fine except for one thing. When I click go to declaration on some method in my project code, IDEA shows me how it is implemented (redirects me to the library sources). But when I'm trying to "inspect" SBT's internal sources it shows me something like this:

def settings: Seq[Setting[_]] = { /** compiled code **/ }

How can I attach SBT sources to my IDEA project?

I'm using SBT 0.12.3.

Answer 1

In SBT there are two command which may interest you:

update-classifiers - will download all sources and documentation for all libs in your project
update-sbt-classifiers - downloads sbt sources and docs

This will download all the sources you need. To make an IDEA project with them just call gen-idea sbt-classifiers.

If you don't want to call each time this commands for re-generating you project, you should add something like this to your build.sbt: addCommandAlias("make-idea", ";update-classifiers; update-sbt-classifiers; gen-idea sbt-classifiers").

Answer 2

As of sbt version 1.2.8, the command is changed to:
sbt updateClassifiers - to download all sources and docs
sbt updateSbtClassifiers - to download sbt sources and docs.