should be .lhs file

darcs-hash:20070707012008-9c5c1-61b0adb14285a2048c813bf92f419b18b2efbb3b.gz

Setup.hs

-module Main where
-
-import Distribution.Simple
-
-
-main :: IO ()
-main = defaultMainWithHooks defaultUserHooks

Setup.lhs

+#!/usr/bin/env runhaskell
+> import Distribution.Simple
+> main = defaultMain