py, unix: Convert sys module to static representation.
diff --git a/py/py.mk b/py/py.mk
index 23ba9eb..09b4056 100644
--- a/py/py.mk
+++ b/py/py.mk
@@ -82,6 +82,7 @@
 	modmath.o \
 	modmicropython.o \
 	modstruct.o \
+	modsys.o \
 	vm.o \
 	showbc.o \
 	repl.o \