[GHC] #15546: Display coaxiom branch incompatibilities in GHCi

[GHC]

#15546: Display coaxiom branch incompatibilities in GHCi
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        Reporter:  mniip             |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:  8.6.1
       Component:  GHCi              |              Version:  8.4.3
      Resolution:                    |             Keywords:  TypeFamilies,
                                     |  GHCi
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by mniip):

 I'd say, even if rarely used, it's still a more important thing to be able
 to see than even `-fprint-explicit-kinds`, as `:i` will tell you any non-
 star kinds on its own anyway. But I don't insist.

 How about `-fprint-axiom-incomps`?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15546#comment:2>
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