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-rw-r--r--compiler/GHC/Core/Predicate.hs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/GHC/Core/Predicate.hs b/compiler/GHC/Core/Predicate.hs
index 89dc9a9e71..a19f129161 100644
--- a/compiler/GHC/Core/Predicate.hs
+++ b/compiler/GHC/Core/Predicate.hs
@@ -34,6 +34,7 @@ import GHC.Prelude
import GHC.Core.Type
import GHC.Core.Class
import GHC.Core.TyCon
+import GHC.Core.TyCon.RecWalk
import GHC.Types.Var
import GHC.Core.Coercion
import GHC.Core.Multiplicity ( scaledThing )