TH changes for ghc 8.0

[Christiaan Baaij]

mapM conT :: [Name] -> Q [Type] :: [Name] -> Q [Pred] :: [Name] -> CxtQ

Those `Name`s are Class names, which are Type constructors, hence `conT`

Christiaan

On 04/12/2016 10:17 AM, Erik de Castro Lopo wrote:
> Erik Hesselink wrote:
>
>> That function does exist for me in rc2:
>>
>> cxt :: [PredQ] -> CxtQ
>
> Ah, there is it is!
>
> But I'm trying to write code that works with ghc-7.10 *and* ghc-8.0
> (yes, I'm using CPP in all its ugly glory), but if I've got code that
> works with ghc-7.10 (the first type signature below):
>
>> - dataD :: CxtQ -> Name -> [TyVarBndr]               -> [ConQ] -> [Name] -> DecQ
>> + dataD :: CxtQ -> Name -> [TyVarBndr] -> Maybe Kind -> [ConQ] -> CxtQ   -> DecQ
>
> how do I convert it to the second? Adding a `Nothing` for the `Maybe
> Kind` argument is easy, but if the old code has `[Name]`, how do I
> convert it to a `CxtQ`. The `cxt` function won't do it.
>
> Erik
>