diff --git a/ivy/Ivy.scala b/ivy/Ivy.scala
index 030d0c1925..6f8ce9a642 100644
--- a/ivy/Ivy.scala
+++ b/ivy/Ivy.scala
@@ -168,6 +168,11 @@ final class IvySbt(val configuration: IvyConfiguration)
 			val md = PomModuleDescriptorParser.getInstance.parseDescriptor(settings, toURL(pc.file), pc.validate)
 			val dmd = IvySbt.toDefaultModuleDescriptor(md)
 			IvySbt.addConfigurations(dmd, Configurations.defaultInternal)
+			for( is <- pc.ivyScala) {
+				val confParser = new CustomXmlParser.CustomParser(settings, Some(Configurations.DefaultMavenConfiguration.name))
+				confParser.setMd(dmd)
+				addScalaToolDependencies(dmd, confParser, is)
+			}
 			(dmd, "compile")
 		}
 		/** Parses the Ivy file 'ivyFile' from the given `IvyFileConfiguration`.*/
@@ -177,8 +182,14 @@ final class IvySbt(val configuration: IvyConfiguration)
 			parser.setValidate(ifc.validate)
 			parser.setSource(toURL(ifc.file))
 			parser.parse()
-			val md = parser.getModuleDescriptor()
-			(IvySbt.toDefaultModuleDescriptor(md), parser.getDefaultConf)
+			val dmd = IvySbt.toDefaultModuleDescriptor(parser.getModuleDescriptor())
+			for( is <- ifc.ivyScala )
+				addScalaToolDependencies(dmd, parser, is)
+			(dmd, parser.getDefaultConf)
+		}
+		private def addScalaToolDependencies(dmd: DefaultModuleDescriptor, parser: CustomXmlParser.CustomParser, is: IvyScala) {
+			IvySbt.addConfigurations(dmd, Configurations.ScalaTool :: Nil)
+			IvySbt.addDependencies(dmd, ScalaArtifacts.toolDependencies(is.scalaOrganization, is.scalaFullVersion), parser)
 		}
 		private def toURL(file: File) = file.toURI.toURL
 		private def configureEmpty(ec: EmptyConfiguration) =
diff --git a/ivy/IvyConfigurations.scala b/ivy/IvyConfigurations.scala
index 4d93d87228..734c56b91a 100644
--- a/ivy/IvyConfigurations.scala
+++ b/ivy/IvyConfigurations.scala
@@ -79,6 +79,7 @@ final case class InlineConfiguration(module: ModuleID, moduleInfo: ModuleInfo, d
 	def withConfigurations(configurations: Seq[Configuration]) =  copy(configurations = configurations)
 	def noScala = copy(ivyScala = None)
 }
+@deprecated("Define a module using inline Scala (InlineConfiguration), a pom.xml (PomConfiguration), or an ivy.xml (IvyFileConfiguration).", "0.13.0")
 final case class EmptyConfiguration(module: ModuleID, moduleInfo: ModuleInfo, ivyScala: Option[IvyScala], validate: Boolean) extends ModuleSettings
 {
 	def noScala = copy(ivyScala = None)
@@ -100,6 +101,7 @@ object InlineConfiguration
 }
 object ModuleSettings
 {
+	@deprecated("Explicitly select configuration from pom.xml, ivy.xml, or inline Scala.", "0.13.0")
 	def apply(ivyScala: Option[IvyScala], validate: Boolean, module: => ModuleID, moduleInfo: => ModuleInfo)(baseDirectory: File, log: Logger): ModuleSettings =
 	{
 		log.debug("Autodetecting dependencies.")
diff --git a/ivy/IvyScala.scala b/ivy/IvyScala.scala
index e21d3d01af..23b7597ffe 100644
--- a/ivy/IvyScala.scala
+++ b/ivy/IvyScala.scala
@@ -19,6 +19,13 @@ object ScalaArtifacts
 	val LibraryID = ScalaLibraryID
 	val CompilerID = ScalaCompilerID
 	def libraryDependency(version: String): ModuleID = ModuleID(Organization, LibraryID, version)
+
+	private[sbt] def toolDependencies(org: String, version: String): Seq[ModuleID] = Seq(
+		scalaToolDependency(org, ScalaArtifacts.CompilerID, version),
+		scalaToolDependency(org, ScalaArtifacts.LibraryID, version)
+	)
+	private[this] def scalaToolDependency(org: String, id: String, version: String): ModuleID = 
+		ModuleID(org, id, version, Some(Configurations.ScalaTool.name + "->default,optional(default)") )
 }
 object SbtArtifacts
 {
@@ -28,7 +35,7 @@ object SbtArtifacts
 
 import ScalaArtifacts._
 
-final case class IvyScala(scalaFullVersion: String, scalaBinaryVersion: String, configurations: Iterable[Configuration], checkExplicit: Boolean, filterImplicit: Boolean, overrideScalaVersion: Boolean)
+final case class IvyScala(scalaFullVersion: String, scalaBinaryVersion: String, configurations: Iterable[Configuration], checkExplicit: Boolean, filterImplicit: Boolean, overrideScalaVersion: Boolean, scalaOrganization: String = ScalaArtifacts.Organization)
 
 private object IvyScala
 {
diff --git a/main/Defaults.scala b/main/Defaults.scala
index 85f1810f7f..34326b1f07 100755
--- a/main/Defaults.scala
+++ b/main/Defaults.scala
@@ -35,13 +35,6 @@ object Defaults extends BuildCommon
 {
 	final val CacheDirectoryName = "cache"
 
-	private[sbt] def scalaToolDependencies(org: String, version: String): Seq[ModuleID] = Seq(
-		scalaToolDependency(org, ScalaArtifacts.CompilerID, version),
-		scalaToolDependency(org, ScalaArtifacts.LibraryID, version)
-	)
-	private[this] def scalaToolDependency(org: String, id: String, version: String): ModuleID = 
-		ModuleID(org, id, version, Some(Configurations.ScalaTool.name + "->default,optional(default)") )
-
 	def configSrcSub(key: SettingKey[File]): Initialize[File] = (key in ThisScope.copy(config = Global), configuration) { (src, conf) => src / nameForSrc(conf.name) }
 	def nameForSrc(config: String) = if(config == Configurations.Compile.name) "main" else config
 	def prefix(config: String) = if(config == Configurations.Compile.name) "" else config + "-"
@@ -857,16 +850,16 @@ object Classpaths
 		allDependencies := {
 			val base = projectDependencies.value ++ libraryDependencies.value
 			val pluginAdjust = if(sbtPlugin.value) sbtDependency.value.copy(configurations = Some(Provided.name)) +: base else base
-			if(scalaHome.value.isDefined)
+			if(scalaHome.value.isDefined || ivyScala.value.isEmpty)
 				pluginAdjust
 			else
-				Defaults.scalaToolDependencies(scalaOrganization.value, scalaVersion.value) ++ pluginAdjust
+				ScalaArtifacts.toolDependencies(scalaOrganization.value, scalaVersion.value) ++ pluginAdjust
 		},
 		ivyLoggingLevel in GlobalScope :== UpdateLogging.DownloadOnly,
 		ivyXML in GlobalScope :== NodeSeq.Empty,
 		ivyValidate in GlobalScope :== false,
-		ivyScala <<= ivyScala or (scalaHome, scalaVersion in update, scalaBinaryVersion in update) { (sh,fv,bv) =>
-			Some(new IvyScala(fv, bv, Nil, filterImplicit = false, checkExplicit = true, overrideScalaVersion = sh.isEmpty))
+		ivyScala <<= ivyScala or (scalaHome, scalaVersion in update, scalaBinaryVersion in update, scalaOrganization) { (sh,fv,bv,so) =>
+			Some(new IvyScala(fv, bv, Nil, filterImplicit = false, checkExplicit = true, overrideScalaVersion = sh.isEmpty, scalaOrganization = so))
 		},
 		moduleConfigurations in GlobalScope :== Nil,
 		publishTo in GlobalScope :== None,