Drop aggregation in querying settings

main/src/main/scala/sbt/internal/server/NetworkChannel.scala

@@ -83,7 +83,7 @@ final class NetworkChannel(val name: String, connection: Socket, state: State) e
     import sbt.internal.util.complete.Parser
 
     val extracted = Project extract state
-    val keys = Parser.parse(req.setting, Act aggregatedKeyParser extracted)
+    val key = Parser.parse(req.setting, Act scopedKeyParser extracted)
 
     def getSettingValue[A](key: Def.ScopedKey[A]) =
       extracted.structure.data.get(key.scope, key.key)
@@ -94,23 +94,14 @@ final class NetworkChannel(val name: String, connection: Socket, state: State) e
           case x               => Right(x)
         }
 
-    def zeroValues: Either[Vector[String], Vector[Any]] = Right(Vector.empty)
-    def anyLeftsOrAllRights[A, B](acc: Either[Vector[A], Vector[B]], elem: Either[A, B]): Either[Vector[A], Vector[B]] =
-      (acc, elem) match {
-        case (Right(a), Right(x)) => Right(a :+ x)
-        case (Right(_), Left(x))  => Left(Vector(x))
-        case (Left(a), Right(_))  => Left(a)
-        case (Left(a), Left(x))   => Left(a :+ x)
-      }
-
-    val values = keys match {
-      case Left(msg)   => Left(s"Invalid programmatic input:" +: (msg.lines.toVector map ("   " + _)))
-      case Right(keys) => keys.map(getSettingValue(_)).foldLeft(zeroValues)(anyLeftsOrAllRights)
+    val values = key match {
+      case Left(msg)  => Left(s"Invalid programmatic input: $msg")
+      case Right(key) => Right(getSettingValue(key))
     }
 
     val jsonValues = values match {
-      case Left(errors)  => errors
-      case Right(values) => values map (_.toString)
+      case Left(errors) => errors
+      case Right(value) => value.toString
     }
 
     StandardMain.exchange publishEventMessage SettingQueryResponse(jsonValues)

protocol/src/main/contraband-scala/sbt/protocol/SettingQueryResponse.scala

@@ -5,28 +5,28 @@
 // DO NOT EDIT MANUALLY
 package sbt.protocol
 final class SettingQueryResponse private (
-  val values: Vector[String]) extends sbt.protocol.EventMessage() with Serializable {
+  val value: String) extends sbt.protocol.EventMessage() with Serializable {
   
   
   
   override def equals(o: Any): Boolean = o match {
-    case x: SettingQueryResponse => (this.values == x.values)
+    case x: SettingQueryResponse => (this.value == x.value)
     case _ => false
   }
   override def hashCode: Int = {
-    37 * (17 + values.##)
+    37 * (17 + value.##)
   }
   override def toString: String = {
-    "SettingQueryResponse(" + values + ")"
+    "SettingQueryResponse(" + value + ")"
   }
-  protected[this] def copy(values: Vector[String] = values): SettingQueryResponse = {
-    new SettingQueryResponse(values)
+  protected[this] def copy(value: String = value): SettingQueryResponse = {
+    new SettingQueryResponse(value)
   }
-  def withValues(values: Vector[String]): SettingQueryResponse = {
-    copy(values = values)
+  def withValue(value: String): SettingQueryResponse = {
+    copy(value = value)
   }
 }
 object SettingQueryResponse {
   
-  def apply(values: Vector[String]): SettingQueryResponse = new SettingQueryResponse(values)
+  def apply(value: String): SettingQueryResponse = new SettingQueryResponse(value)
 }

protocol/src/main/contraband-scala/sbt/protocol/codec/SettingQueryResponseFormats.scala

@@ -11,16 +11,16 @@ implicit lazy val SettingQueryResponseFormat: JsonFormat[sbt.protocol.SettingQue
     jsOpt match {
       case Some(js) =>
       unbuilder.beginObject(js)
-      val values = unbuilder.readField[Vector[String]]("values")
+      val value = unbuilder.readField[String]("value")
       unbuilder.endObject()
-      sbt.protocol.SettingQueryResponse(values)
+      sbt.protocol.SettingQueryResponse(value)
       case None =>
       deserializationError("Expected JsObject but found None")
     }
   }
   override def write[J](obj: sbt.protocol.SettingQueryResponse, builder: Builder[J]): Unit = {
     builder.beginObject()
-    builder.addField("values", obj.values)
+    builder.addField("value", obj.value)
     builder.endObject()
   }
 }

protocol/src/main/contraband/server.contra

@@ -41,7 +41,7 @@ type ExecStatusEvent implements EventMessage {
 }
 
 type SettingQueryResponse implements EventMessage {
-  values: [String]
+  value: String!
 }
 
 # enum Status {