installing sbt-assembly with sbt 0.11.2

dsg picture dsg · Dec 12, 2011 · Viewed 13.2k times · Source

I am trying to install sbt-assembly by following the instructions in order to make a stand-alone jar that can run on a computer without scala installed.

So far these are the steps I've taken.

I created a plugins.sbt file:

$ cat sbt/project/plugins.sbt 
addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.7.2")

And I added the following to the beginning of my build.sbt file:

$ head -n3 sbt/build.sbt 
import AssemblyKeys._ // put this at the top of the file

seq(assemblySettings: _*)

But when I run sbt, I get the following error:

sbt/build.sbt:1: error: not found: value AssemblyKeys
import AssemblyKeys._ 

Answer

dsg picture dsg · Feb 16, 2012
  1. Make sure you are running sbt version at least 0.11 by typing

    $ sbt sbt-version

    at the bash prompt.

  2. Make sure you have the plugins file set up as follows:

    $ cat sbt/project/plugins.sbt
    
    addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.7.2")
    
  3. Make your build file (build.sbt) look like this:

    import AssemblyKeys._ 
    
    seq(assemblySettings: _*)
    
    name := "my_project"
    
    version := "1.0"
    
    scalaVersion := "2.9.1"
    
    libraryDependencies ++= Seq(
      "org.scalatest" %% "scalatest" % "1.6.1" % "test",
      "commons-lang" % "commons-lang" % "2.6"
    )
    
    traceLevel in run := 0
    
    fork in run := true
    
    scalacOptions ++= Seq("-optimize")
    
    // The following is the class that will run when the jar is compiled!
    
    mainClass in assembly := Some("MyMain")