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Diffstat (limited to 'compiler/typecheck/TcDeriv.hs')
| -rw-r--r-- | compiler/typecheck/TcDeriv.hs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/typecheck/TcDeriv.hs b/compiler/typecheck/TcDeriv.hs index 6f749fc60f..bb9c76ba61 100644 --- a/compiler/typecheck/TcDeriv.hs +++ b/compiler/typecheck/TcDeriv.hs @@ -815,7 +815,7 @@ deriveTyData tvs tc tc_args mb_deriv_strat deriv_pred final_tkvs = tyCoVarsOfTypesWellScoped $ final_cls_tys ++ final_tc_args - ; let tkvs = toposortTyVars $ fvVarList $ + ; let tkvs = scopedSort $ fvVarList $ unionFV (tyCoFVsOfTypes tc_args_to_keep) (FV.mkFVs deriv_tvs) Just kind_subst = mb_match |