diff --git a/11-single-price-grid-component/src/main/scala/pricegrid/App.scala b/11-single-price-grid-component/src/main/scala/pricegrid/App.scala
index ddcb50a..34dcfe2 100644
--- a/11-single-price-grid-component/src/main/scala/pricegrid/App.scala
+++ b/11-single-price-grid-component/src/main/scala/pricegrid/App.scala
@@ -6,7 +6,10 @@ package pricegrid
 import scalatags.Text.all._
 import scalatags.Text.tags2
 
-object App extends cask.MainRoutes {
+case class AppRoutes(someVal: String)(implicit cc: castor.Context,
+                           log: cask.Logger) extends cask.Routes {
+  println(s"> Starting server with param $someVal")
+
   @cask.get("/")
   def index() = Page.wholePageMarkup
 
@@ -18,3 +21,10 @@ object App extends cask.MainRoutes {
 
   initialize()
 }
+object App extends cask.Main {
+  override val allRoutes = Seq(AppRoutes("hello!"))
+  override def main(args: Array[String]) = {
+    println(s"server starting with args: $args")
+    super.main(Array.empty)
+  }
+}
diff --git a/flake.nix b/flake.nix
index fec5605..0c6da0b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -14,6 +14,7 @@
               pkgs.sbt
               pkgs.scalafmt
               pkgs.nodePackages.tailwindcss
+              pkgs.jdk
             ];
           };
         }