drvfail004.stderr 328 Bytes
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./drvfail004.hs:5:
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    Could not deduce `Eq (Foo a b)' from the context (Ord a, Ord b)
    Probable fix:
	Add `Eq (Foo a b)' to the instance declaration context
	Or add an instance declaration for `Eq (Foo a b)'
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    arising from the instance declaration at ./drvfail004.hs:5
    In the instance declaration for `Ord (Foo a b)'