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-rw-r--r--compiler/iface/BuildTyCl.hs2
1 files changed, 2 insertions, 0 deletions
diff --git a/compiler/iface/BuildTyCl.hs b/compiler/iface/BuildTyCl.hs
index a5b724994c..4eb8271477 100644
--- a/compiler/iface/BuildTyCl.hs
+++ b/compiler/iface/BuildTyCl.hs
@@ -15,6 +15,8 @@ module BuildTyCl (
#include "HsVersions.h"
+import GhcPrelude
+
import IfaceEnv
import FamInstEnv( FamInstEnvs, mkNewTypeCoAxiom )
import TysWiredIn( isCTupleTyConName )