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-rw-r--r--compiler/main/DynFlags.hs4
1 files changed, 3 insertions, 1 deletions
diff --git a/compiler/main/DynFlags.hs b/compiler/main/DynFlags.hs
index 3f34eb66e9..6d15352c75 100644
--- a/compiler/main/DynFlags.hs
+++ b/compiler/main/DynFlags.hs
@@ -383,7 +383,8 @@ data ExtensionFlag
| Opt_NPlusKPatterns
| Opt_DoAndIfThenElse
| Opt_RebindableSyntax
-
+ | Opt_ConstraintKind
+
| Opt_StandaloneDeriving
| Opt_DeriveDataTypeable
| Opt_DeriveFunctor
@@ -1861,6 +1862,7 @@ xFlags = [
( "NPlusKPatterns", AlwaysAllowed, Opt_NPlusKPatterns, nop ),
( "DoAndIfThenElse", AlwaysAllowed, Opt_DoAndIfThenElse, nop ),
( "RebindableSyntax", AlwaysAllowed, Opt_RebindableSyntax, nop ),
+ ( "ConstraintKind", AlwaysAllowed, Opt_ConstraintKind, nop ),
( "MonoPatBinds", AlwaysAllowed, Opt_MonoPatBinds,
\ turn_on -> when turn_on $ deprecate "Experimental feature now removed; has no effect" ),
( "ExplicitForAll", AlwaysAllowed, Opt_ExplicitForAll, nop ),