Question

I tried to pull in external dependency on github project:

object HelloBuild extends Build {
  lazy val root = Project(id = "hello", base = file(".")) dependsOn
                  (RootProject( uri("git://github.com/Rogach/s4gnuplot")))
}

It is also built with sbt, and also has sbt-revolver plugin.

And I get the following message:

[error] AttributeKey ID collisions detected for: 'start' 
        (sbt.InputTask[cc.spray.revolver.AppProcess], 
         sbt.InputTask[cc.spray.revolver.AppProcess])

Removing sbt-revolver plugin from the outer project makes build work.

Is there a way to work around this?

EDIT: This seems to be a bug in sbt: #329

Answer 1

The simplest way would be to checkout s4gnuplot and publish (or just publish-local) a binary package, then depend on that in the normal way with libraryDependencies.