GHC 8 and Template Haskell

[Iavor Diatchki]

I left the "instanceD" functions as is, and added a new function
`instanceWithOverlapD` to avoid that problem:

instanceD :: CxtQ -> TypeQ -> [DecQ] -> DecQ
instanceWithOverlapD :: Maybe Overlap -> CxtQ -> TypeQ -> [DecQ] -> DecQ

The patch is here btw:

https://phabricator.haskell.org/D2118





On Fri, Apr 15, 2016 at 7:14 AM, Ryan Scott <ryan.gl.scott at gmail.com> wrote:

> > I've done a quick grep for InstanceD over the stackage-nightly-subset of
> Hackage:
>
> Wouldn't we also need to check for the instanceD function from
> Language.Haskell.TH.Lib as well? I know several of my packages use
> that exclusively over the InstanceD constructor, and I imagine others
> do as well.
>
> Ryan S.
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