Implement Project#withId

main/src/main/scala/sbt/Project.scala

@@ -177,6 +177,8 @@ sealed trait Project extends ProjectDefinition[ProjectReference] {
    */
   def configure(transforms: (Project => Project)*): Project = Function.chain(transforms)(this)
 
+  def withId(id: String) = copy(id = id)
+
   /** Sets the base directory for this project.*/
   def in(dir: File): Project = copy(base = dir)
 

notes/1.1.0/project-id.md

@@ -0,0 +1,11 @@
+[@dwijnand]: https://github.com/dwijnand
+
+[#3601]: https://github.com/sbt/sbt/pull/3601
+
+### Fixes with compatibility implications
+
+### Improvements
+
+- Adds `Project#withId` to change a project's id. [#3601][] by [@dwijnand][]
+
+### Bug fixes