3 The constraint `Eq a' does not mention any of
4 the universally quantified type variables {}
6 In the type signature for an instance decl
10 mentions type variables that do not appear in the type
12 In the type signature for an instance decl
15 The constraint `Eq a' does not mention any of
16 the universally quantified type variables {}
17 of the type `Int -> Int'
18 In the type signature for `f'
22 mentions type variables that do not appear in the type
24 In the type signature for `f'
27 The constraint `Eq a' does not mention any of
28 the universally quantified type variables {}
30 In the type signature for `op'
33 Compilation had errors