diff --git a/build.sbt b/build.sbt
index 2cffb3cd8..086c0e361 100644
--- a/build.sbt
+++ b/build.sbt
@@ -8,10 +8,15 @@ import Scripted._
 import StringUtilities.normalize
 import Sxr.sxr
 
+// ThisBuild settings take lower precedence,
+// but can be shared across the multi projects.
+def buildLevelSettings: Seq[Setting[_]] = Seq(
+  organization in ThisBuild := "org.scala-sbt",
+  version in ThisBuild := "0.13.8-SNAPSHOT"
+)
+
 def commonSettings: Seq[Setting[_]] = Seq(
-  organization := "org.scala-sbt",
-  version := "0.13.8-SNAPSHOT",
-  scalaVersion in ThisBuild := "2.10.4",
+  scalaVersion := "2.10.4",
   publishArtifact in packageDoc := false,
   publishMavenStyle := false,
   componentID := None,
@@ -20,7 +25,8 @@ def commonSettings: Seq[Setting[_]] = Seq(
   concurrentRestrictions in Global += Util.testExclusiveRestriction,
   testOptions += Tests.Argument(TestFrameworks.ScalaCheck, "-w", "1"),
   javacOptions in compile ++= Seq("-target", "6", "-source", "6", "-Xlint", "-Xlint:-serial"),
-  incOptions := incOptions.value.withNameHashing(true)
+  incOptions := incOptions.value.withNameHashing(true),
+  crossScalaVersions := Seq(scala210)
 )
 
 def minimalSettings: Seq[Setting[_]] =
@@ -34,9 +40,17 @@ def testedBaseSettings: Seq[Setting[_]] =
   baseSettings ++ testDependencies
 
 lazy val root: Project = (project in file(".")).
-  configs(Sxr.sxrConf, Proguard).
+  configs(Sxr.sxrConf).
   aggregate(nonRoots: _*).
-  settings(minimalSettings ++ rootSettings: _*)
+  settings(buildLevelSettings: _*).
+  settings(minimalSettings ++ rootSettings: _*).
+  settings(
+    publish := {},
+    publishLocal := {
+      val p = (proguard in (proguardedLauncherProj, Proguard)).value
+      IO.copyFile(p, target.value / p.getName)
+    }
+  )
 
 /* ** subproject declarations ** */
 
@@ -62,6 +76,24 @@ lazy val launchProj = (project in launchPath).
     Transform.sourceProperties := Map("cross.package0" -> "xsbt", "cross.package1" -> "boot")
   )): _*)
 
+// the proguarded launcher
+// the launcher is published with metadata so that the scripted plugin can pull it in
+// being proguarded, it shouldn't ever be on a classpath with other jars, however
+lazy val proguardedLauncherProj = (project in file("sbt-launch")).
+  configs(Proguard).
+  settings(minimalSettings ++ LaunchProguard.settings ++ LaunchProguard.specific(launchProj) ++
+    Release.launcherSettings(proguard in Proguard): _*).
+  settings(
+    name := "sbt-launch",
+    moduleName := "sbt-launch",
+    description := "sbt application launcher",
+    publishArtifact in packageSrc := false,
+    autoScalaLibrary := false,
+    publish <<= Seq(publish, Release.deployLauncher).dependOn,
+    publishLauncher <<= Release.deployLauncher,
+    packageBin in Compile <<= proguard in Proguard
+  )
+
 // used to test the retrieving and loading of an application: sample app is packaged and published to the local repository
 lazy val testSamples = (project in launchPath / "test-sample").
   dependsOn(interfaceProj, launchInterfaceProj).
@@ -84,7 +116,13 @@ lazy val interfaceProj = (project in file("interface")).
     watchSources <++= apiDefinitions,
     resourceGenerators in Compile <+= (version, resourceManaged, streams, compile in Compile) map generateVersionFile,
     apiDefinitions <<= baseDirectory map { base => (base / "definition") :: (base / "other") :: (base / "type") :: Nil },
-    sourceGenerators in Compile <+= (cacheDirectory, apiDefinitions, fullClasspath in Compile in datatypeProj, sourceManaged in Compile, mainClass in datatypeProj in Compile, runner, streams) map generateAPICached    
+    sourceGenerators in Compile <+= (cacheDirectory,
+      apiDefinitions,
+      fullClasspath in Compile in datatypeProj,
+      sourceManaged in Compile,
+      mainClass in datatypeProj in Compile,
+      runner,
+      streams) map generateAPICached
   )
 
 // defines operations on the API of a source, including determining whether it has changed and converting it to a string
@@ -295,9 +333,18 @@ lazy val compileInterfaceProj = (project in compilePath / "interface").
     artifact in (Compile, packageSrc) := Artifact(srcID).copy(configurations = Compile :: Nil).extra("e:component" -> srcID)
   )
 
-lazy val precompiled282 = precompiled("2.8.2")
-lazy val precompiled292 = precompiled("2.9.2")
-lazy val precompiled293 = precompiled("2.9.3")
+def precompiledSettings = Seq(
+  artifact in packageBin <<= (appConfiguration, scalaVersion) { (app, sv) =>
+    val launcher = app.provider.scalaProvider.launcher
+    val bincID = binID + "_" + ScalaInstance(sv, launcher).actualVersion
+    Artifact(binID) extra ("e:component" -> bincID)
+  },
+  target <<= (target, scalaVersion) { (base, sv) => base / ("precompiled_" + sv) },
+  scalacOptions := Nil,
+  ivyScala ~= { _.map(_.copy(checkExplicit = false, overrideScalaVersion = false)) },
+  exportedProducts in Compile := Nil,
+  libraryDependencies += scalaCompiler.value % "provided"
+)
 
 // Implements the core functionality of detecting and propagating changes incrementally.
 //   Defines the data structures for representing file fingerprints and relationships and the overall source analysis
@@ -405,7 +452,7 @@ lazy val mainProj = (project in mainPath).
 //  technically, we need a dependency on all of mainProj's dependencies, but we don't do that since this is strictly an integration project
 //  with the sole purpose of providing certain identifiers without qualification (with a package object)
 lazy val sbtProj = (project in sbtPath).
-  dependsOn(mainProj, compileInterfaceProj, precompiled282, precompiled292, precompiled293, scriptedSbtProj % "test->test").
+  dependsOn(mainProj, compileInterfaceProj, scriptedSbtProj % "test->test").
   settings(baseSettings: _*).
   settings(
     name := "sbt",
@@ -424,13 +471,13 @@ lazy val mavenResolverPluginProj = (project in file("sbt-maven-resolver")).
 def scriptedTask: Initialize[InputTask[Unit]] = Def.inputTask {
   val result = scriptedSource(dir => (s: State) => scriptedParser(dir)).parsed
   publishAll.value
-  doScripted((proguard in Proguard).value, (fullClasspath in scriptedSbtProj in Test).value,
+  doScripted((proguard in Proguard in proguardedLauncherProj).value, (fullClasspath in scriptedSbtProj in Test).value,
     (scalaInstance in scriptedSbtProj).value, scriptedSource.value, result, scriptedPrescripted.value)
 }
 
 def scriptedUnpublishedTask: Initialize[InputTask[Unit]] = Def.inputTask {
   val result = scriptedSource(dir => (s: State) => scriptedParser(dir)).parsed
-  doScripted((proguard in Proguard).value, (fullClasspath in scriptedSbtProj in Test).value,
+  doScripted((proguard in Proguard in proguardedLauncherProj).value, (fullClasspath in scriptedSbtProj in Test).value,
     (scalaInstance in scriptedSbtProj).value, scriptedSource.value, result, scriptedPrescripted.value)
 }
 
@@ -439,7 +486,8 @@ lazy val publishLauncher = TaskKey[Unit]("publish-launcher")
 
 lazy val myProvided = config("provided") intransitive
 
-def allProjects = Seq(launchInterfaceProj, launchProj, testSamples, interfaceProj, apiProj,
+def allProjects = Seq(launchInterfaceProj, launchProj, proguardedLauncherProj,
+  testSamples, interfaceProj, apiProj,
   controlProj, collectionProj, applyMacroProj, processProj, ioProj, classpathProj, completeProj,
   logProj, relationProj, classfileProj, datatypeProj, crossProj, logicProj, ivyProj,
   testingProj, testAgentProj, taskProj, stdTaskProj, cacheProj, trackingProj, runProj,
@@ -447,12 +495,12 @@ def allProjects = Seq(launchInterfaceProj, launchProj, testSamples, interfacePro
   compilerIntegrationProj, compilerIvyProj,
   scriptedBaseProj, scriptedSbtProj, scriptedPluginProj,
   actionsProj, commandProj, mainSettingsProj, mainProj, sbtProj, mavenResolverPluginProj)
+
 def projectsWithMyProvided = allProjects.map(p => p.copy(configurations = (p.configurations.filter(_ != Provided)) :+ myProvided))
 lazy val nonRoots = projectsWithMyProvided.map(p => LocalProject(p.id))
 
-def releaseSettings = Release.settings(nonRoots, proguard in Proguard)
-def rootSettings = releaseSettings ++ fullDocSettings ++ LaunchProguard.settings ++ LaunchProguard.specific(launchProj) ++
-  Util.publishPomSettings ++ otherRootSettings ++ proguardedLauncherSettings ++ Formatting.sbtFilesSettings ++
+def rootSettings = Release.releaseSettings ++ fullDocSettings ++
+  Util.publishPomSettings ++ otherRootSettings ++ Formatting.sbtFilesSettings ++
   Transform.conscriptSettings(launchProj)
 def otherRootSettings = Seq(
   Scripted.scriptedPrescripted := { _ => },
@@ -460,7 +508,7 @@ def otherRootSettings = Seq(
   Scripted.scriptedUnpublished <<= scriptedUnpublishedTask,
   Scripted.scriptedSource <<= (sourceDirectory in sbtProj) / "sbt-test",
   publishAll := {
-    (publishLocal).all(ScopeFilter(inAnyProject)).value
+    val _ = (publishLocal).all(ScopeFilter(inAnyProject)).value
   }
 ) ++ inConfig(Scripted.MavenResolverPluginTest)(Seq(
   Scripted.scripted <<= scriptedTask,
@@ -492,17 +540,6 @@ def fullDocSettings = Util.baseScalacOptions ++ Docs.settings ++ Sxr.settings ++
   dependencyClasspath in (Compile, doc) := (fullClasspath in sxr).value
 )
 
-// the launcher is published with metadata so that the scripted plugin can pull it in
-// being proguarded, it shouldn't ever be on a classpath with other jars, however
-def proguardedLauncherSettings = Seq(
-  publishArtifact in packageSrc := false,
-  moduleName := "sbt-launch",
-  autoScalaLibrary := false,
-  description := "sbt application launcher",
-  publishLauncher <<= Release.deployLauncher,
-  packageBin in Compile <<= proguard in Proguard
-)
-
 /* Nested Projproject paths */
 def sbtPath    = file("sbt")
 def cachePath  = file("cache")
@@ -512,34 +549,6 @@ def utilPath   = file("util")
 def compilePath = file("compile")
 def mainPath   = file("main")
 
-def precompiledSettings = Seq(
-  artifact in packageBin <<= (appConfiguration, scalaVersion) { (app, sv) =>
-    val launcher = app.provider.scalaProvider.launcher
-    val bincID = binID + "_" + ScalaInstance(sv, launcher).actualVersion
-    Artifact(binID) extra ("e:component" -> bincID)
-  },
-  target <<= (target, scalaVersion) { (base, sv) => base / ("precompiled_" + sv) },
-  scalacOptions := Nil,
-  ivyScala ~= { _.map(_.copy(checkExplicit = false, overrideScalaVersion = false)) },
-  exportedProducts in Compile := Nil,
-  libraryDependencies += scalaCompiler.value % "provided"
-)
-
-def precompiled(scalav: String): Project = Project(id = normalize("Precompiled " + scalav.replace('.', '_')), base = compilePath / "interface").
-  dependsOn(interfaceProj).
-  settings(baseSettings ++ precompiledSettings: _*).
-  settings(
-    name := "Precompiled " + scalav.replace('.', '_'),
-    scalaHome := None,
-    scalaVersion <<= (scalaVersion in ThisBuild) { sbtScalaV =>
-      assert(sbtScalaV != scalav, "Precompiled compiler interface cannot have the same Scala version (" + scalav + ") as sbt.")
-      scalav
-    },
-    // we disable compiling and running tests in precompiled Projprojects of compiler interface
-    // so we do not need to worry about cross-versioning testing dependencies
-    sources in Test := Nil
-  )
-
 lazy val safeUnitTests = taskKey[Unit]("Known working tests (for both 2.10 and 2.11)")
 lazy val safeProjects: ScopeFilter = ScopeFilter(
   inProjects(launchProj, mainSettingsProj, mainProj, ivyProj, completeProj,
@@ -580,7 +589,6 @@ def customCommands: Seq[Setting[_]] = Seq(
       "so compile" ::
       "so publishSigned" ::
       "publishLauncher" ::
-      "release-libs-211" ::
       state
   }
 )
diff --git a/project/NightlyPlugin.scala b/project/NightlyPlugin.scala
index bddc7cafc..5ab480cf2 100644
--- a/project/NightlyPlugin.scala
+++ b/project/NightlyPlugin.scala
@@ -8,7 +8,6 @@ object NightlyPlugin extends AutoPlugin {
   override def trigger = allRequirements
   override def requires = plugins.JvmPlugin
   object autoImport {
-    lazy val nightly212 = SettingKey[Boolean]("nightly212")
     lazy val includeTestDependencies = SettingKey[Boolean]("includeTestDependencies", "Doesn't declare test dependencies.")
 
     def testDependencies = libraryDependencies <++= includeTestDependencies { incl =>
@@ -22,8 +21,13 @@ object NightlyPlugin extends AutoPlugin {
   }
 
   override def buildSettings: Seq[Setting[_]] = Seq(
-    nightly212 <<= scalaVersion(v => v.startsWith("2.12.")),
-    includeTestDependencies <<= nightly212(x => !x)
+    // Avoid 2.12.x nightlies
+    // Avoid 2.9.x precompiled
+    // Avoid 2.8.x precompiled
+    includeTestDependencies := {
+      val v = scalaVersion.value
+      v.startsWith("2.10.") || v.startsWith("2.11.")
+    }
   )
 
   override def projectSettings: Seq[Setting[_]] = Seq(
diff --git a/project/Release.scala b/project/Release.scala
index 1aef1a9ef..5fe2dd5bd 100644
--- a/project/Release.scala
+++ b/project/Release.scala
@@ -13,20 +13,19 @@ object Release extends Build {
 
   val PublishRepoHost = "private-repo.typesafe.com"
 
-  def settings(nonRoots: => Seq[ProjectReference], launcher: TaskKey[File]): Seq[Setting[_]] =
-    releaseSettings(nonRoots, launcher)
+  def launcherSettings(launcher: TaskKey[File]): Seq[Setting[_]] = Seq(
+    launcherRemotePath <<= (organization, version, moduleName) { (org, v, n) => List(org, n, v, n + ".jar").mkString("/") },
+    deployLauncher <<= deployLauncher(launcher)
+  )
 
   // Add credentials if they exist.
   def lameCredentialSettings: Seq[Setting[_]] =
     if (CredentialsFile.exists) Seq(credentials in ThisBuild += Credentials(CredentialsFile))
     else Nil
-  def releaseSettings(nonRoots: => Seq[ProjectReference], launcher: TaskKey[File]): Seq[Setting[_]] = Seq(
+  def releaseSettings: Seq[Setting[_]] = Seq(
     publishTo in ThisBuild <<= publishResolver,
-    remoteID <<= publishStatus("typesafe-ivy-" + _),
-    remoteBase <<= publishStatus("https://" + PublishRepoHost + "/typesafe/ivy-" + _),
-    launcherRemotePath <<= (organization, version, moduleName) { (org, v, n) => List(org, n, v, n + ".jar").mkString("/") },
-    publish <<= Seq(publish, Release.deployLauncher).dependOn,
-    deployLauncher <<= deployLauncher(launcher),
+    remoteID in ThisBuild <<= publishStatus("typesafe-ivy-" + _),
+    remoteBase in ThisBuild <<= publishStatus("https://" + PublishRepoHost + "/typesafe/ivy-" + _),
     checkCredentials := {
       // Note - This will eitehr issue a failure or succeed.
       getCredentials(credentials.value, streams.value.log)
diff --git a/project/Util.scala b/project/Util.scala
index f299fb299..453dd7b1e 100644
--- a/project/Util.scala
+++ b/project/Util.scala
@@ -22,8 +22,8 @@ object Util {
   lazy val baseScalacOptions = Seq(
     scalacOptions ++= Seq("-Xelide-below", "0"),
     scalacOptions <++= scalaVersion map CrossVersion.partialVersion map {
-      case Some((2, 9)) => Nil // support 2.9 for some subprojects for the Scala Eclipse IDE
-      case _            => Seq("-feature", "-language:implicitConversions", "-language:postfixOps", "-language:higherKinds", "-language:existentials")
+      case Some((2, 9)) | Some((2, 8)) => Nil // support 2.9 for some subprojects for the Scala Eclipse IDE
+      case _                           => Seq("-feature", "-language:implicitConversions", "-language:postfixOps", "-language:higherKinds", "-language:existentials")
     },
     scalacOptions <++= scalaVersion map CrossVersion.partialVersion map {
       case Some((2, 10)) => Seq("-deprecation", "-Xlint")
diff --git a/project/p.sbt b/project/p.sbt
index 5ea1b55b1..1524ca243 100644
--- a/project/p.sbt
+++ b/project/p.sbt
@@ -13,4 +13,4 @@ addSbtPlugin("com.typesafe.sbt" % "sbt-scalariform" % "1.3.0")
 
 addSbtPlugin("com.typesafe.sbt" % "sbt-javaversioncheck" % "0.1.0")
 
-addSbtPlugin("com.eed3si9n" % "sbt-doge" % "0.1.1")
+addSbtPlugin("com.eed3si9n" % "sbt-doge" % "0.1.3")
diff --git a/sbt/src/sbt-test/compiler-project/run2.8-2.9/build.sbt b/sbt/src/sbt-test/compiler-project/run2.8-2.9/build.sbt
new file mode 100644
index 000000000..c4ad9ed83
--- /dev/null
+++ b/sbt/src/sbt-test/compiler-project/run2.8-2.9/build.sbt
@@ -0,0 +1,13 @@
+lazy val specs = Def.setting {
+  "org.scala-tools.testing" %% "specs" % (scalaVersion.value match {
+    case "2.8.1" | "2.8.2" | "2.9.0" => "1.6.8"
+    case "2.9.3" => "1.6.9"
+  })
+}
+
+lazy val root = (project in file(".")).
+  settings(
+    scalaVersion := "2.8.1",
+    libraryDependencies += specs.value % Test,
+    libraryDependencies <+= scalaVersion("org.scala-lang" % "scala-compiler" % _)
+  )
diff --git a/sbt/src/sbt-test/compiler-project/run2.8/src/main/scala/Foo.scala b/sbt/src/sbt-test/compiler-project/run2.8-2.9/src/main/scala/Foo.scala
similarity index 100%
rename from sbt/src/sbt-test/compiler-project/run2.8/src/main/scala/Foo.scala
rename to sbt/src/sbt-test/compiler-project/run2.8-2.9/src/main/scala/Foo.scala
diff --git a/sbt/src/sbt-test/compiler-project/run2.8/src/test/scala/ATest.scala b/sbt/src/sbt-test/compiler-project/run2.8-2.9/src/test/scala/ATest.scala
similarity index 100%
rename from sbt/src/sbt-test/compiler-project/run2.8/src/test/scala/ATest.scala
rename to sbt/src/sbt-test/compiler-project/run2.8-2.9/src/test/scala/ATest.scala
diff --git a/sbt/src/sbt-test/compiler-project/run2.8-2.9/test b/sbt/src/sbt-test/compiler-project/run2.8-2.9/test
new file mode 100644
index 000000000..fbea7588f
--- /dev/null
+++ b/sbt/src/sbt-test/compiler-project/run2.8-2.9/test
@@ -0,0 +1,6 @@
+> ++2.8.1
+> test:test
+> ++2.9.0
+> test:test
+> ++2.9.3
+> test:test
diff --git a/sbt/src/sbt-test/compiler-project/run2.8/build.sbt b/sbt/src/sbt-test/compiler-project/run2.8/build.sbt
deleted file mode 100644
index 159ac76e6..000000000
--- a/sbt/src/sbt-test/compiler-project/run2.8/build.sbt
+++ /dev/null
@@ -1,5 +0,0 @@
-scalaVersion := "2.8.1"
-
-libraryDependencies += "org.scala-tools.testing" %% "specs" % "1.6.7.2" % "test"
-
-libraryDependencies <+= scalaVersion("org.scala-lang" % "scala-compiler" % _)
\ No newline at end of file
diff --git a/sbt/src/sbt-test/compiler-project/run2.8/test b/sbt/src/sbt-test/compiler-project/run2.8/test
deleted file mode 100644
index 7c6f9c539..000000000
--- a/sbt/src/sbt-test/compiler-project/run2.8/test
+++ /dev/null
@@ -1 +0,0 @@
-> test:test
\ No newline at end of file