>>581
四角形をぐるぐるまわすを
$cat > main.hs
-- コピペ
$ghc -package GLUT main.hs

main.hs:11:9:
The last statement in a 'do' construct must be an expression:
rot <- newIORef 0.0 initialDisplayMode
$=
[RGBAMode, DoubleBuffered] initialWindowSize
$=
Size 640 480 createWindow "guruGuru" displayCallback
$=
display rot reshapeCallback
$=
Just reshape addTimerCallback timerInterval
$ timerProc (display rot) mainLoop display rot

ほかのものは
Failed, modules loaded:ほにゃらら
となってしまいます