Hi,

I'm playing with “plugins”, trying to evaluate a simple expression:

import Control.Monad
import System.Eval.Haskell

main = do
    let fExpr = "1 + 2 :: Int"
    r <- eval_ fExpr ["Prelude"] [] [] []
            :: IO (Either [String] (Maybe Int))
    case r of
        Right (Just f)  -> do
            print $ f
        Left err -> putStrLn $ "Error: " ++ unlines err
        _ -> putStrLn $ "Unknown error."

However, it fails with

Error: 
on the commandline: Warning:
    -fglasgow-exts is deprecated: Use individual extensions instead

Am I doing something wrong? How can I turn off the flag?

I'm using GHC 7.6.3.

Thanks,
Petr