On Mon, Feb 16, 2015 at 2:22 PM, C Maeder <c.maeder@jacobs-university.de> wrote:

Hi Ivan,

could you make a new release of fgl that works with ghc-7.10?

I could compile it locally after the following changes:

Data/Graph/Inductive/Query/Monad.hs

+import Control.Applicative
+import Control.Monad (ap, liftM)

+instance Monad m => Functor (GT m g) where
+ fmap = liftM
+
+instance Monad m => Applicative (GT m g) where
+ pure = return
+ (<*>) = ap

Data/Graph/Inductive/Monad/IOArray.hs

-{-# LANGUAGE MultiParamTypeClasses, FlexibleInstances #-}
+{-# LANGUAGE MultiParamTypeClasses, FlexibleInstances, FlexibleContexts #-}

I'm not sure why FlexibleContexts is now needed and I'm not sure how the package version number should change.

Assuming the package defines GT this is a minor (third component) bump according to the newish PVP rules. Major if it's an orphan instance.

Cheers Christian
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