diff --git a/main/Keys.scala b/main/Keys.scala
index e5612bbf6..1a195a303 100644
--- a/main/Keys.scala
+++ b/main/Keys.scala
@@ -139,6 +139,7 @@ object Keys
 	val artifactClassifier = SettingKey[Option[String]]("artifact-classifier", "Sets the classifier used by the default artifact definition.")
 	val artifactName = SettingKey[(String, ModuleID, Artifact) => String]("artifact-name", "Function that produces the artifact name from its definition.")
 	val mappings = TaskKey[Seq[(File,String)]]("mappings", "Defines the mappings from a file to a path, used by packaging, for example.")
+	val fileMappings = TaskKey[Seq[(File,File)]]("file-mappings", "Defines the mappings from a file to a file, used for copying files, for example.")
 
 	// Run Keys
 	val selectMainClass = TaskKey[Option[String]]("select-main-class", "Selects the main class to run.")
diff --git a/main/Project.scala b/main/Project.scala
index 196810d24..36ce12f8c 100644
--- a/main/Project.scala
+++ b/main/Project.scala
@@ -83,6 +83,13 @@ final case class Extracted(structure: BuildStructure, session: SessionSettings,
 		value getOrElse error(Project.display(ScopedKey(scope, key)) + " is undefined.")
 	private def getOrError[T](scope: Scope, key: AttributeKey[T]): T =
 		structure.data.get(scope, key) getOrElse error(Project.display(ScopedKey(scope, key)) + " is undefined.")
+
+	def append(settings: Seq[Setting[_]], state: State): State =
+	{
+		val appendSettings = Load.transformSettings(Load.projectScope(currentRef), currentRef.build, rootProject, settings)
+		val newStructure = Load.reapply(session.original ++ appendSettings, structure)
+		Project.setProject(session, newStructure, state)
+	}
 }
 
 sealed trait ClasspathDep[PR <: ProjectReference] { def project: PR; def configuration: Option[String] }