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Diffstat (limited to 'compiler/typecheck/TcCanonical.hs')
| -rw-r--r-- | compiler/typecheck/TcCanonical.hs | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/compiler/typecheck/TcCanonical.hs b/compiler/typecheck/TcCanonical.hs index bbb29f5e38..941a6eab29 100644 --- a/compiler/typecheck/TcCanonical.hs +++ b/compiler/typecheck/TcCanonical.hs @@ -1,4 +1,5 @@ {-# LANGUAGE CPP #-} +{-# LANGUAGE DeriveFunctor #-} module TcCanonical( canonicalize, @@ -2198,10 +2199,7 @@ data StopOrContinue a | Stop CtEvidence -- The (rewritten) constraint was solved SDoc -- Tells how it was solved -- Any new sub-goals have been put on the work list - -instance Functor StopOrContinue where - fmap f (ContinueWith x) = ContinueWith (f x) - fmap _ (Stop ev s) = Stop ev s + deriving (Functor) instance Outputable a => Outputable (StopOrContinue a) where ppr (Stop ev s) = text "Stop" <> parens s <+> ppr ev |