For GHC, implement the Typeable.hs macros using standalone deriving

[ghc-base.git] / GHC / Conc / Sync.lhs

diff --git a/GHC/Conc/Sync.lhs b/GHC/Conc/Sync.lhs
index af69a63..0214a56 100644 (file)
--- a/GHC/Conc/Sync.lhs
+++ b/GHC/Conc/Sync.lhs
@@ -7,6 +7,7 @@
            , UnliftedFFITypes
            , ForeignFunctionInterface
            , DeriveDataTypeable
+           , StandaloneDeriving
            , RankNTypes
   #-}
 {-# OPTIONS_GHC -fno-warn-missing-signatures #-}