[GHC] #9432: IncoherentInstances are too restricted

[GHC]

#9432: IncoherentInstances are too restricted
-------------------------------------+-------------------------------------
        Reporter:  danilo2           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:
       Component:  Compiler (Type    |              Version:  7.8.2
  checker)                           |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #8141             |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by simonpj):

 Yes these are two distinct issues.  I've made #13284 for comment:1.

 I don't really understand the problem in the Description.  Does it not
 suffice to add the signature
 {{{
 inferTypeBase :: InferType a => a -> Proxy a
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9432#comment:8>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler