SBT including the version number in a program

Question

I want a program I\'m building to be able to report its own version at runtime (e.g. scala myprog.jar --version). Traditionally in a maven project, I\'d use res

Answer 1

I ended up making the build system (I use a Makefile on top of sbt) prepare a src/main/resources/version.txt file for Scala to read.

In the Makefile:

$(RESOURCES_VERSION): build.sbt
    grep "^version := " $< | cut -f2 -d\" > $@

In Scala:

val version: String = {
  val src = Source.fromURL( getClass.getResource("/version.txt") )
  src.getLines.next   // just take the first line 
}

This works for me.

It's curious that such a needed feature (I would think) is not easily available in Scala. A very simple sbt plugin just for this would be welcome.