:set -v1
System.IO.writeFile "T8042B.hs" "module T8042B where { fooB = \"T8042B\"; }"
System.IO.writeFile "T8042A.hs" "module T8042A where { import T8042B; run = putStrLn fooB }"
:set -fobject-code
:load T8042A
:load *T8042A
:break run