Merge pull request #191 from aelve/ghc-no-js

Add no-js option for building

Setup.hs

@@ -1,7 +1,12 @@
 import Distribution.Simple
 import System.Process
+import System.Environment (lookupEnv)
 
 main = do
+  js <- lookupEnv "NO_JS"
+  case js of
+    Just "true" -> defaultMain
+    _           -> do
       hooks <- buildJS simpleUserHooks
       defaultMainWithHooks hooks