Making set() a sentinel

gistfile1.txt

diff --git a/src/Perl6/Actions.nqp b/src/Perl6/Actions.nqp
index b2e60a1..d4e2b92 100644
--- a/src/Perl6/Actions.nqp
+++ b/src/Perl6/Actions.nqp
@@ -5544,8 +5544,12 @@ class Perl6::Actions is HLL::Actions does STDActions {
         make QAST::Op.new( :op('call'), :name('&term:<time>'), :node($/) );
     }
 
+    my $empty_set;
     method term:sym<empty_set>($/) {
-        make QAST::Op.new( :op('call'), :name('&set'), :node($/) );
+        unless $empty_set {
+            $empty_set := nqp::create($*W.find_symbol(['Set']));
+        }
+        make QAST::WVal.new( :value($empty_set) );
     }
 
     method term:sym<rand>($/) {
     
     
=================
$ 6 'use nqp; dd nqp::objectid(∅); dd nqp::objectid(∅)'
===SORRY!===
Object of type Set in QAST::WVal, but not in SC