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-rw-r--r--compiler/GHC/Types/Basic.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/GHC/Types/Basic.hs b/compiler/GHC/Types/Basic.hs
index d4dcf3cb69..8a254cb182 100644
--- a/compiler/GHC/Types/Basic.hs
+++ b/compiler/GHC/Types/Basic.hs
@@ -1943,7 +1943,7 @@ isKindLevel KindLevel = True
data Levity
= Lifted
| Unlifted
- deriving Eq
+ deriving (Data, Eq, Ord, Show)
instance Outputable Levity where
ppr Lifted = text "Lifted"