2 tcfail044.hs:12: No instance for:
3 `PrelBase.Eval (a{-a19I-} -> a{-a19I-})'
5 in an instance declaration
6 When checking superclass constraints of an instance declaration
8 tcfail044.hs:20: No instance for:
9 `PrelBase.Eval (PrelBase.Float -> PrelBase.Float)'
11 at a use of an overloaded identifier: `PrelBase.+'
14 Compilation had errors