Re: [Haskell-cafe] [ANNOUNCE] hashable-generics

On Sun, Nov 4, 2012 at 5:39 PM, Johan Tibell wrote:

Couldn't we do it using GHC's default implementations based on signatures features, so we don't have to expose any new things in the API?

We used that in unordered-containers like so:

#ifdef GENERICS default parseRecord :: (Generic a, GFromRecord (Rep a)) => Record -> Parser a parseRecord r = to <$> gparseRecord r #endif

Exactly, that's what I meant with DefaultSignatures. (I see that someone CC'd you here so maybe you missed the thread on cafe.)