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-rw-r--r--libraries/template-haskell/Language/Haskell/TH/Syntax.hs1
1 files changed, 1 insertions, 0 deletions
diff --git a/libraries/template-haskell/Language/Haskell/TH/Syntax.hs b/libraries/template-haskell/Language/Haskell/TH/Syntax.hs
index 3a3cf60349..95ece50bcc 100644
--- a/libraries/template-haskell/Language/Haskell/TH/Syntax.hs
+++ b/libraries/template-haskell/Language/Haskell/TH/Syntax.hs
@@ -1743,6 +1743,7 @@ data DerivClause = DerivClause (Maybe DerivStrategy) Cxt
data DerivStrategy = StockStrategy -- ^ A \"standard\" derived instance
| AnyclassStrategy -- ^ @-XDeriveAnyClass@
| NewtypeStrategy -- ^ @-XGeneralizedNewtypeDeriving@
+ | ViaStrategy Type -- ^ @-XDerivingVia@
deriving( Show, Eq, Ord, Data, Generic )
-- | A Pattern synonym's type. Note that a pattern synonym's *fully*