diff options
| -rw-r--r-- | compiler/typecheck/TcDeriv.lhs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/typecheck/TcDeriv.lhs b/compiler/typecheck/TcDeriv.lhs index 0272c54b38..fc41c8a14a 100644 --- a/compiler/typecheck/TcDeriv.lhs +++ b/compiler/typecheck/TcDeriv.lhs @@ -656,7 +656,7 @@ mkNewTypeEqn orig mayDeriveDataTypeable newtype_deriving overlap_flag tvs cls cl mb_std_err = checkSideConditions mayDeriveDataTypeable cls cls_tys rep_tycon std_err = derivingThingErr cls cls_tys tc_app $ vcat [fromJust mb_std_err, - ptext SLIT("Try -fglasgow-exts for GHC's newtype-deriving extension")] + ptext SLIT("Try -XGeneralizedNewtypeDeriving for GHC's newtype-deriving extension")] -- Here is the plan for newtype derivings. We see -- newtype T a1...an = MkT (t ak+1...an) deriving (.., C s1 .. sm, ...) |