Default sbt.version in loader is now automatically defined by build

git-svn-id: https://simple-build-tool.googlecode.com/svn/trunk@1044 d89573ee-9141-11dd-94d4-bdf5e562f29c

boot/src/main/scala/ProjectProperties.scala

@@ -48,9 +48,9 @@ private object ProjectProperties
 	/** The default version of the new user project when the user doesn't explicitly specify a version when prompted.*/
 	val DefaultVersion = "1.0"
 	/** The default version of sbt when the user doesn't explicitly specify a version when prompted.*/
-	val DefaultSbtVersion = "0.5.4"
+	val DefaultSbtVersion = DefaultVersions.Sbt //"0.5.4"
 	/** The default version of Scala when the user doesn't explicitly specify a version when prompted.*/
-	val DefaultScalaVersion = "2.7.5"
+	val DefaultScalaVersion = DefaultVersions.Scala//"2.7.5"
 
 	// sets up the project properties for a throwaway project (flattens src and lib to the root project directory)
 	def scratch(file: File)

project/build/LoaderProject.scala

@@ -122,6 +122,25 @@ protected/* removes the ambiguity as to which project is the entry point by maki
 	|    public protected *;
 	|}
 	""".stripMargin
+
+	def managedSrc = path("src_managed")
+	def defaultVersionPath = managedSrc / "DefaultVersions.scala"
+	override def mainSourceRoots = super.mainSourceRoots +++ managedSrc
+	override def compileAction = super.compileAction dependsOn(versionProperties)
+	override def cleanAction = cleanTask(outputPath +++ managedSrc, cleanOptions)
+	lazy val versionProperties = task { writeVersionProperties(projectVersion.value.toString, scalaVersion.value.toString)  }
+	def writeVersionProperties(sbtVersion: String, scalaVersion: String) =
+		FileUtilities.write(defaultVersionPath.asFile, defaultVersions(sbtVersion, scalaVersion), log)
+
+	def defaultVersions(sbtVersion: String, scalaVersion: String) =
+"""
+package sbt.boot
+object DefaultVersions
+{
+	val Sbt = "%s"
+	val Scala = "%s"
+}
+""".format(sbtVersion, scalaVersion)
 }
 object LoaderProject
 {