Alrighty, this is what I have now. If you think this is ok, I'll go on
re-implementing equalP too and commit. Then we can bikeshed about the
deprecation message :-)
diff --git a/libraries/template-haskell/Language/Haskell/TH/Lib.hs
b/libraries/template-haskell/Language/Haskell/TH/Lib.hs
index 49baa96..08235ba 100644
--- a/libraries/template-haskell/Language/Haskell/TH/Lib.hs
+++ b/libraries/template-haskell/Language/Haskell/TH/Lib.hs
@@ -526,6 +526,13 @@ sigT t k
equalityT :: TypeQ
equalityT = return EqualityT
+{-# DEPRECATED classP "Constraint constructors are just type
constructors, frob this code as 'constraintT'." #-}
+classP :: Name -> [Q Type] -> Q Pred
+classP cla tys
+ = do
+ tysl <- sequence tys
+ return (foldl AppT (ConT cla) tysl)
+
promotedT :: Name -> TypeQ
promotedT = return . PromotedT
Cheers,
Gabor
On 5/14/14, Gregory Collins <g...@gregorycollins.net> wrote:
> On Mon, May 12, 2014 at 4:58 PM, Richard Eisenberg
> <e...@cis.upenn.edu>wrote:
>
>> We could, of course, just leave the functions there with new
>> implementations, but that feels like it could accumulate legacy functions
>> over time.
>
>
> I think the ultimate goal of removing the function was not unwise of you,
> but the right thing to do here would be to write a reimplementation, mark
> it as {-# DEPRECATED #-}, and give a timetable for its future removal. This
> gives users time to adjust and minimizes breakage.
>
> G
> --
> Gregory Collins <g...@gregorycollins.net>
>
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