Hello Grant, The bug is known and there is a patch! http://ghc.haskell.org/trac/ghc/ticket/12519 Edward Excerpts from Grant Wu's message of 2016-09-26 17:41:17 -0400:

Neither Eq nor Ord have the types/summary of the methods that are part of the minimal complete definition listed. See http://hackage.haskell.org/package/base-4.9.0.0/docs/Prelude.html#t:Eq.

Hopefully this is the right place to email. If not, apologies in advance.

Thanks,

Grant Wu grantwwu@gmail.com