2 tcfail056.hs:10: Warning:
3 No explicit method nor default method for `=='
4 in an instance declaration for `Eq'
8 Duplicate or overlapping instance declarations
9 for `Eq Foo' at tcfail056.hs:10 and tcfail056.hs:6
11 tcfail056.hs:10: Class `Eq' does not have a method `<='
14 Compilation had errors