ghc: module version changed to 1; reason: no old .hi file
-_exports_
-ShouldSucceed B(:B :B op2) C(:C :C op1);
-_declarations_
-1 class {C a} => B a where {op2 :: a -> a -> a} ;
+__export ShouldSucceed B{op2} C{op1};
+1 class {C a} => B a where {op2 :: a -> a -> a} ;
1 class C a where {op1 :: a -> a} ;