diff --git a/project/Build.scala b/project/Build.scala
index 0287cfcbd240..d54d83170957 100644
--- a/project/Build.scala
+++ b/project/Build.scala
@@ -189,7 +189,8 @@ object Build {
     // Do not append Scala versions to the generated artifacts
     crossPaths := false,
     // Do not depend on the Scala library
-    autoScalaLibrary := false
+    autoScalaLibrary := false,
+    excludeFromIDE := true
   )
 
   // Settings used when compiling dotty (both non-boostrapped and bootstrapped)
@@ -203,7 +204,8 @@ object Build {
     version := dottyNonBootstrappedVersion,
     scalaVersion := referenceVersion,
     // To be removed once we stop cross-compiling with Scala 2
-    crossScalaVersions := Seq(referenceVersion, scalacVersion)
+    crossScalaVersions := Seq(referenceVersion, scalacVersion),
+    excludeFromIDE := true
   )
 
   // Settings used when compiling dotty with a non-bootstrapped dotty
@@ -977,12 +979,9 @@ object Build {
   val updateCommunityBuild = taskKey[Unit]("Updates the community build.")
 
   lazy val `community-build` = project.in(file("community-build")).
-    settings(commonSettings).
+    dependsOn(dottyLibrary(Bootstrapped)).
+    settings(commonBootstrappedSettings).
     settings(
-      scalaVersion := referenceVersion,
-      // To be removed once we stop cross-compiling with Scala 2
-      crossScalaVersions := Seq(referenceVersion, scalacVersion),
-
       prepareCommunityBuild := {
         (publishLocal in `dotty-sbt-bridge`).value
         (publishLocal in `dotty-interfaces`).value
diff --git a/sbt-dotty/src/dotty/tools/sbtplugin/DottyIDEPlugin.scala b/sbt-dotty/src/dotty/tools/sbtplugin/DottyIDEPlugin.scala
index 4f2610362a7e..8ddd106ed5bb 100644
--- a/sbt-dotty/src/dotty/tools/sbtplugin/DottyIDEPlugin.scala
+++ b/sbt-dotty/src/dotty/tools/sbtplugin/DottyIDEPlugin.scala
@@ -82,16 +82,20 @@ object DottyIDEPlugin extends AutoPlugin {
 
     val (dottyVersions, dottyProjRefs) =
       structure.allProjectRefs.flatMap { projRef =>
-        val version = scalaVersion.in(projRef).get(settings).get
-        if (isDottyVersion(version))
-          Some((version, projRef))
-        else
-          crossScalaVersions.in(projRef).get(settings).get.filter(isDottyVersion).sorted.lastOption match {
-            case Some(v) =>
-              Some((v, projRef))
-            case _ =>
-              None
-          }
+        if (excludeFromIDE.in(projRef).get(settings) == Some(true))
+          None
+        else {
+          val version = scalaVersion.in(projRef).get(settings).get
+          if (isDottyVersion(version))
+            Some((version, projRef))
+          else
+            crossScalaVersions.in(projRef).get(settings).get.filter(isDottyVersion).sorted.lastOption match {
+              case Some(v) =>
+                Some((v, projRef))
+              case _ =>
+                None
+            }
+        }
       }.unzip
 
     if (dottyVersions.isEmpty)