tcfail056.hs:10: Warning:
    No explicit method nor default method for `=='
    in an instance declaration for `Eq'

 
tcfail056.hs:1:
    Duplicate or overlapping instance declarations
	for `Eq Foo' at tcfail056.hs:10 and tcfail056.hs:6
 
tcfail056.hs:10: Class `Eq' does not have a method `<='


Compilation had errors