diff --git a/Setup.hs b/Setup.hs
deleted file mode 100644
index 841d4d0..0000000
--- a/Setup.hs
+++ /dev/null
@@ -1,16 +0,0 @@
-import Distribution.Simple
-import Distribution.Setup   ( ConfigFlags (..) )
-import System.Directory     ( findExecutable )
-
-main = defaultMainWithHooks (defaultUserHooks { postConf = defaultPostConf })
-    where defaultPostConf args flags lbi xxx
-              = do args' <- fmap (args++) (configToArgs flags)
-                   (postConf defaultUserHooks) args' flags lbi xxx
-
-configToArgs :: ConfigFlags -> IO [String]
-configToArgs (ConfigFlags { configHcPath = Just hcPath })
-    = do exec <- findExecutable hcPath
-         case exec of
-           Just realPath -> return ["--with-ghc="++realPath]
-           Nothing -> return ["--with-ghc="++hcPath]
-configToArgs _ = return []
diff --git a/Setup.lhs b/Setup.lhs
new file mode 100644
index 0000000..6527aae
--- /dev/null
+++ b/Setup.lhs
@@ -0,0 +1,19 @@
+#!/usr/bin/env runhaskell
+> module Main where
+> import Distribution.Simple
+> import Distribution.Setup   ( ConfigFlags (..) )
+> import System.Directory     ( findExecutable )
+> 
+> main :: IO ()
+> main = defaultMainWithHooks (defaultUserHooks { postConf = defaultPostConf })
+>     where defaultPostConf args flags lbi {- xx -}
+>               = do args' <- fmap (args++) (configToArgs flags)
+>                    (postConf defaultUserHooks) args' flags lbi {- xx -}
+> 
+> configToArgs :: ConfigFlags -> IO [String]
+> configToArgs (ConfigFlags { configHcPath = Just hcPath })
+>     = do exec <- findExecutable hcPath
+>          case exec of
+>            Just realPath -> return ["--with-ghc="++realPath]
+>            Nothing -> return ["--with-ghc="++hcPath]
+> configToArgs _ = return []
diff --git a/plugins.cabal b/plugins.cabal
index a10fe74..a17ba4e 100644
--- a/plugins.cabal
+++ b/plugins.cabal
@@ -34,5 +34,5 @@ c-sources:
 includes:             Linker.h
 extensions:           CPP, ForeignFunctionInterface
 Build-Depends:        base, Cabal, haskell-src
-ghc-options:          -Wall -O -fvia-C -funbox-strict-fields -fno-warn-missing-signatures
+ghc-options:          -Wall -O -fasm -funbox-strict-fields -fno-warn-missing-signatures
 hs-source-dir: src