Add empty artifacts for Mima on Scala 3

build.sc

@@ -31,6 +31,8 @@ trait MainArgsPublishModule extends PublishModule with CrossScalaModule with Mim
       .lastTag
       .getOrElse(throw new Exception("Missing last tag"))
   )
+  // Remove after Scala 3 artifacts are published
+  def mimaPreviousArtifacts = T{ if(isScala3(scalaVersion())) Seq() else super.mimaPreviousArtifacts() }
   def artifactName = "mainargs"
 
   def pomSettings = PomSettings(