Index: tests/interp.test
===================================================================
diff -u -r357028ca6e4ffd7ec4ed240e75c9c001f9c4a8cc -r8e2e356e9bcef39f43dfe3690b82d9586c7adc72
--- tests/interp.test	(.../interp.test)	(revision 357028ca6e4ffd7ec4ed240e75c9c001f9c4a8cc)
+++ tests/interp.test	(.../interp.test)	(revision 8e2e356e9bcef39f43dfe3690b82d9586c7adc72)
@@ -1,4 +1,7 @@
 # -*- Tcl -*-
+
+package prefer latest
+
 package req nx::test
 
 proc traceStderr args {