sbt settings for scala and hibernate

build.sbt

import sbt._
import Keys._

object BuildSettings {
  val buildOrganization = "http://natalino.busa.nl"
  val buildVersion      = "1.0.0"
  val buildScalaVersion = "2.9.2"

  val buildSettings = Defaults.defaultSettings ++ Seq (
    organization  := buildOrganization,
    version       := buildVersion,
    scalaVersion  := buildScalaVersion,
    shellPrompt   := ShellPrompt.buildShellPrompt,
    scalacOptions := Seq("-deprecation", "-encoding", "utf8")
  )
}

// Shell prompt which show the current project,
// git branch and build version
object ShellPrompt {
  object devnull extends ProcessLogger {
    def info (s: => String) {}
    def error (s: => String) { }
    def buffer[T] (f: => T): T = f
  }
  def currBranch = (
    ("git status -sb" lines_! devnull headOption)
      getOrElse "-" stripPrefix "## "
  )

  val buildShellPrompt = {
    (state: State) => {
      val currProject = Project.extract (state).currentProject.id
      "%s:%s:%s> ".format (
        currProject, currBranch, BuildSettings.buildVersion
      )
    }
  }
}

object Resolvers {
  val MavenRepo    =   "Maven repository" at "http://repo1.maven.org/maven2/"
  val JBossRepo    =   "JBoss repository" at "https://repository.jboss.org/nexus/content/groups/public/"

  val allResolvers = Seq (MavenRepo, JBossRepo)
}

object Dependencies {
    val allDependencies = Seq(
      "org.hibernate" % "hibernate-core" % "4.1.8.Final",
      "org.hibernate" % "hibernate-entitymanager" % "4.1.8.Final",
      "org.hsqldb" % "hsqldb" % "2.2.8",
      "org.slf4j" % "slf4j-api" % "1.6.1",
      "org.slf4j" % "slf4j-log4j12" % "1.6.1",
      "log4j" % "log4j" % "1.2.16"
   )
}

object DefaultBuild extends Build {
  import Resolvers._
  import Dependencies._
  import BuildSettings._

   val appName         = "HibernateJpaScalaTutorial"
   val appVersion      = "1.0"

  lazy val root = Project (
    id = appName,
    base = file ("."),
    settings = buildSettings ++ Seq (resolvers ++= allResolvers, libraryDependencies ++= allDependencies)
  )

}