Evidently ghci needs -cpp even if all the modules are already compiled.

diff --git a/program/run b/program/run
index 7fd903d..ab7d9d2 100755 (executable)
--- a/program/run
+++ b/program/run
@@ -1,2 +1,2 @@
 #!/bin/bash
-make && exec ghci Test "$@"
+make && exec ghci -cpp Test "$@"