On Fri, Apr 20, 2012 at 12:25 AM, Ivan Lazar Miljenovic <[email protected]> wrote: > Has there been a change in the behaviour/requirement of > TypeSynonymInstances as of GHC-7.4.1? (Not sure if this behaviour > occurs with 7.2.1 as I don't have it installed) > > I had an instance for String for a class which ghc accepted whilst > using FlexibleInstances; however, when trying to load it in 7.0.* it > stated that TypeSynonymInstances was needed (which I forgot to add > since it didn't seem to need it). >
Previously FlexibleInstances implied TypeSynonymInstances, I think? I can't find any documentation for the change or a bug report, so I could be mis-remembering. Antoine _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
