Getting sbt-assembly working

Question

So thus far I've been compiling my Scala project with SBT (via Typesafe stack). I want to run the code across several machines now, via sbt-assembly . Following directions, the only one change I made was in my project/Build.scala file. Here is the related part:

resolvers += "Typesafe Releases" at "http://repo.typesafe.com/typesafe/releases",
resolvers += "artifactory" at "http://scalasbt.artifactoryonline.com/scalasbt/sbt-plugin-releases",
libraryDependencies += "com.eed3si9n" % "sbt-assembly" % "0.8.3"

When I run sbt compile however, I get this error:

sbt.ResolveException: unresolved dependency: com.eed3si9n#sbt-assembly/scala_2.9.1/sbt_0.11.2;0.8.3: not found .

What am I doing wrong?

Thanks!

EDIT Created a build.sbt file in the same folder as Build.scala (folder is /project/ ) and have these two lines in it:

Seq[Setting[_]](resolvers += "artifactory" at "http://scalasbt.artifactoryonline.com/scalasbt/sbt-plugin-releases",
                addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.8.3"))

Now the error is:

[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]  ::          UNRESOLVED DEPENDENCIES         ::
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]  :: com.eed3si9n#sbt-assembly;0.8.3: not found
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn] 
[warn]  Note: Some unresolved dependencies have extra attributes.  Check that these dependencies exist with the requested attributes.
[warn]      com.eed3si9n:sbt-assembly:0.8.3 (sbtVersion=0.11.2, scalaVersion=2.9.1)
[warn] 
[error] {file:/Users/myname/current/projectname/project/}default-d7da9a/*:update: sbt.ResolveException: unresolved dependency: com.eed3si9n#sbt-assembly;0.8.3: not found

EDIT 2 Hm, after I do a successful sbt compile , should I just be able to enter the sbt console and type in assembly ?

> assembly
[error] Not a valid command: assembly
[error] Not a valid project ID: assembly
[error] Not a valid configuration: assembly
[error] Not a valid key: assembly
[error] assembly
[error]   

EDIT 3 JK got it. Had to add the build.sbt info as specified in the GitHub README.

Answer 1

There are two points here. One is that SBT plugins are not just library dependencies -- in particular, they use the current SBT version in a similar way that other Scala libraries use the Scala version. The other is that libraryDependencies in project/Build.scala affects the dependencies for the project , not for the build .

An SBT full build is itself an SBT project, just located one level down the directory tree, and so can have a build of its own configured the same way a normal build is. Unlike a normal build, where going for a "full build" is necessary under a handful of circumstances, there is almost never a reason to use a full build for a build, so using .sbt files located in project/ is almost always sufficient.

The other issue is the versioning. SBT has a utility function called addSbtPlugin that handles everything for you. It takes a moduleID and adds all the necessary SBT and Scala versioning information.

So, to get sbt-assembly working in a full build, you create a .sbt file in under project/ (conventionally either project/build.sbt or project/plugins.sbt ) and place your build's resolvers and dependencies there:

resolvers += Resolver.url("artifactory", url("http://scalasbt.artifactoryonline.com/scalasbt/sbt-plugin-releases"))(Resolver.ivyStylePatterns)

addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.8.3")