+ = [ (Opt_RankNTypes, Opt_ExplicitForAll)
+ , (Opt_Rank2Types, Opt_ExplicitForAll)
+ , (Opt_ScopedTypeVariables, Opt_ExplicitForAll)
+ , (Opt_LiberalTypeSynonyms, Opt_ExplicitForAll)
+ , (Opt_ExistentialQuantification, Opt_ExplicitForAll)
+ , (Opt_PolymorphicComponents, Opt_ExplicitForAll)
+
+ , (Opt_GADTs, Opt_RelaxedPolyRec) -- We want type-sig variables to