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-rw-r--r--compiler/GHC/Driver/Session.hs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/GHC/Driver/Session.hs b/compiler/GHC/Driver/Session.hs
index 2ad09bc7c6..c544b398a7 100644
--- a/compiler/GHC/Driver/Session.hs
+++ b/compiler/GHC/Driver/Session.hs
@@ -3703,6 +3703,7 @@ xFlagsDeps = [
depFlagSpec' "NullaryTypeClasses" LangExt.NullaryTypeClasses
(deprecatedForExtension "MultiParamTypeClasses"),
flagSpec "NumDecimals" LangExt.NumDecimals,
+ flagSpec "OrPatterns" LangExt.OrPatterns,
depFlagSpecOp "OverlappingInstances" LangExt.OverlappingInstances
setOverlappingInsts
"instead use per-instance pragmas OVERLAPPING/OVERLAPPABLE/OVERLAPS",