installing sbt-assembly with sbt 0.11.2

Question

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._

Do you get an error message that the plugin can not be downloaded? — Christian
@Christian -- No, actually, I don't get a message like that. I believe that the plugin is being downloaded. — dsg
It works here, exactly with the statements you have above (I have the plugin still in project/plugins/build.sbt which is now deprecated, but I doubt that this makes a difference). What happens if you do sbt reload clean update, does it download the plugin? — 0__

dsg dsg · Accepted Answer · 2012-02-16T09:24:28

Make sure you are running sbt version at least 0.11 by typing

$ sbt sbt-version

at the bash prompt.

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

$ cat sbt/project/plugins.sbt

addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.7.2")

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")

installing sbt-assembly with sbt 0.11.2

3 Answers