parse error on constrained record gadt

[qdbp]

stylish-haskell fails on the following:

{-# LANGUAGE GADTs #-}

data Foo a where
    Foo :: (Eq a) => {
            fooBar :: [a],
            fooBaz :: Int
        } -> Foo a

main = putStrLn "foo"

with this error:
Language.Haskell.Stylish.Parse.parseModule: could not parse fail.hs: ParseFailed (SrcLoc "<unknown>.hs" 4 22) "Parse error: {"

It works if I remove the (Eq a) constraint. Ghc is able to compile this file properly, so I assume it's a stylish-haskell error.

[JoeMShanahan]

Any update on this? @jaspervdj