diff --git a/project/build/SbtProject.scala b/project/build/SbtProject.scala
index 985d02412..b56239059 100644
--- a/project/build/SbtProject.scala
+++ b/project/build/SbtProject.scala
@@ -6,7 +6,7 @@ import sbt._
 import java.io.File
 import java.net.URL
 
-abstract class SbtProject(info: ProjectInfo) extends DefaultProject(info) with test.SbtScripted with posterous.Publish
+abstract class SbtProject(info: ProjectInfo) extends DefaultProject(info) with test.SbtScripted with posterous.Publish with Sxr
 {
 	/* Additional resources to include in the produced jar.*/
 	def extraResources = descendents(info.projectPath / "licenses", "*") +++ "LICENSE" +++ "NOTICE"
@@ -46,7 +46,6 @@ abstract class SbtProject(info: ProjectInfo) extends DefaultProject(info) with t
 
 	val testInterface = "org.scala-tools.testing" % "test-interface" % "0.5"
 
-	def deepSources = Path.finder { topologicalSort.flatMap { case p: ScalaPaths => p.mainSources.getFiles } }
 	lazy val sbtDoc = scaladocTask("sbt", deepSources, docPath, docClasspath, documentOptions)
 
 	/* For generating JettyRun for Jetty 6 and 7.  The only difference is the imports, but the file has to be compiled against each set of imports. */
diff --git a/project/build/Sxr.scala b/project/build/Sxr.scala
new file mode 100644
index 000000000..1ef11b9fa
--- /dev/null
+++ b/project/build/Sxr.scala
@@ -0,0 +1,25 @@
+import sbt._
+
+trait Sxr extends BasicScalaProject
+{
+	val sxrConf = config("sxr") hide
+	val sxrDep = "org.scala-tools.sxr" %% "sxr" % "0.2.4" % sxrConf.name
+
+	def deepSources: PathFinder
+	def deepBaseDirectories = Path.finder { topologicalSort.flatMap { case p: ScalaPaths => p.mainSourceRoots.getFiles } }
+	def sxrBaseDirs = "-P:sxr:base-directory:" + deepBaseDirectories.absString
+	def sxrLocation = "-Xplugin:" + managedClasspath(sxrConf).absString
+	def sxrDirName = "browse"
+	def sxrOutput = outputPath / (sxrDirName + ".sxr")
+	def sxrClassesOutput = outputPath / sxrDirName // isn't actually written to, since compiler stops before writing classes
+	def sxrOptions = compileOptions.map(_.asString) ++ Seq(sxrBaseDirs, sxrLocation, "-Ystop:superaccessors")
+
+	lazy val sxr = task {
+		xsbt.FileUtilities.delete(sxrOutput +++ sxrClassesOutput getFiles)
+		xsbt.FileUtilities.createDirectory(sxrClassesOutput asFile)
+		val compiler = new xsbt.RawCompiler(buildScalaInstance, true, true, log)
+		// `Set() ++` is temporary.  getFiles returns immutable.Set in sbt 0.7.3.
+		compiler(Set() ++ deepSources.getFiles, Set() ++ compileClasspath.getFiles, sxrClassesOutput asFile, sxrOptions)
+		None
+	}
+}
diff --git a/sbt/src/main/scala/sbt/Path.scala b/sbt/src/main/scala/sbt/Path.scala
index e45b190f8..586499e63 100644
--- a/sbt/src/main/scala/sbt/Path.scala
+++ b/sbt/src/main/scala/sbt/Path.scala
@@ -7,7 +7,8 @@ import Path._
 import FileUtilities.wrapNull
 import java.io.File
 import java.net.URL
-import scala.collection.mutable.{Set, HashSet}
+import scala.collection.{immutable, mutable}
+import mutable.{Set, HashSet}
 
 /** A Path represents a file in a project.
 * @see sbt.PathFinder*/
@@ -243,9 +244,9 @@ object Path
 	def fromFiles(files: Iterable[File]): Iterable[Path] =  files.map(fromFile)
 
 	// done this way because collection.Set.map returns Iterable that is Set underneath, so no need to create a new set
-	def mapSet[T](files: Iterable[Path])(f: Path => T): scala.collection.immutable.Set[T] =
-		files.map(f) match { case s: scala.collection.immutable.Set[T] => s; case x => scala.collection.immutable.Set() ++ x }
-	def getFiles(files: Iterable[Path]): scala.collection.immutable.Set[File] = mapSet(files)(_.asFile)
+	def mapSet[T](files: Iterable[Path])(f: Path => T): immutable.Set[T] =
+		files.map(f) match { case s: immutable.Set[T] => s; case x => immutable.Set() ++ x }
+	def getFiles(files: Iterable[Path]): immutable.Set[File] = mapSet(files)(_.asFile)
 	def getURLs(files: Iterable[Path]): Array[URL] = files.map(_.asURL).toSeq.toArray
 }
 
@@ -295,10 +296,10 @@ sealed abstract class PathFinder extends NotNull
 	final def filter(f: Path => Boolean): PathFinder = Path.lazyPathFinder(get.filter(f))
 	final def flatMap(f: Path => PathFinder): PathFinder = Path.lazyPathFinder(get.flatMap(p => f(p).get))
 	final def getURLs: Array[URL] = Path.getURLs(get)
-	final def getFiles: scala.collection.immutable.Set[File] = Path.getFiles(get)
-	final def getPaths: scala.collection.immutable.Set[String] = strictMap(_.absolutePath)
-	final def getRelativePaths: scala.collection.immutable.Set[String] = strictMap(_.relativePath)
-	final def strictMap[T](f: Path => T): scala.collection.immutable.Set[T] = Path.mapSet(get)(f)
+	final def getFiles: immutable.Set[File] = Path.getFiles(get)
+	final def getPaths: immutable.Set[String] = strictMap(_.absolutePath)
+	final def getRelativePaths: immutable.Set[String] = strictMap(_.relativePath)
+	final def strictMap[T](f: Path => T): immutable.Set[T] = Path.mapSet(get)(f)
 	private[sbt] def addTo(pathSet: Set[Path])
 
 	final def absString = Path.makeString(get)
diff --git a/sbt/src/main/scala/sbt/ScalaProject.scala b/sbt/src/main/scala/sbt/ScalaProject.scala
index ad4ea5b2d..c2d5a2b06 100644
--- a/sbt/src/main/scala/sbt/ScalaProject.scala
+++ b/sbt/src/main/scala/sbt/ScalaProject.scala
@@ -43,6 +43,8 @@ trait SimpleScalaProject extends ExecProject with Cleanable
 	case class CompileOption(val asString: String) extends ActionOption
 	case class JavaCompileOption(val asString: String) extends ActionOption
 
+	def compileOptions(asString: String*): Seq[CompileOption] = asString.map(CompileOption.apply)
+
 	val Deprecation = CompileOption(CompileOptions.Deprecation)
 	val ExplainTypes = CompileOption("-explaintypes")
 	val Optimize = CompileOption("-optimise")