diff --git a/make b/make
index 1b6f992..3d70e37 100755
--- a/make
+++ b/make
@@ -65,7 +65,7 @@ server(){
   cd /tmp
   test -f redbean.com || wget https://redbean.dev/redbean-2.2.com -O redbean.com && chmod 755 redbean.com
   test -f cert.pem    || openssl req -newkey rsa:2048 -new -nodes -x509 -days 3650 -keyout key.pem -out cert.pem
-  ./redbean.com -c 0 -C cert.pem -K key.pem -D $dir
+  ./redbean.com -c 0 -C cert.pem -K key.pem "$@" -D $dir
 }
 
 build(){
diff --git a/shell.nix b/shell.nix
index 58ee0d1..40e95ff 100644
--- a/shell.nix
+++ b/shell.nix
@@ -13,7 +13,9 @@
     ];
 
     shellHooks = ''
-      bash
+	export NIX_SHELL_XRSH=1
+        echo -e "\n run: './make build' to build all (haxe parser + js)\n"
+        echo -e "\n run: './make build javascript' to build js\n"
     '';
 }