[Haskell-cafe] "plugins" fails on a simple example

Petr Pudlák petr.mvd at gmail.com
Tue Sep 17 09:08:43 CEST 2013


Any ideas what could be causing the problem? I could try creating a 
patch, but I have no clue where to start.

   Best regards,
   Petr

Dne 09/16/2013 11:12 PM, Jeremy Shaw napsal(a):
> plugins probably needs to be patched[1]. I'll happily apply such a patch.
>
> - jeremy
> [1] or rewritten from the ground up
>
>
> On Mon, Sep 16, 2013 at 2:49 AM, Petr Pudlák <petr.mvd at gmail.com 
> <mailto:petr.mvd at gmail.com>> wrote:
>
>     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  rof
>              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
>
>
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