[GHC] #9200: Milner-Mycroft failure at the kind level

[GHC]

#9200: Milner-Mycroft failure at the kind level
----------------------------------------------+----------------------------
        Reporter:  ekmett                     |            Owner:
            Type:  bug                        |           Status:  new
        Priority:  normal                     |        Milestone:
       Component:  Compiler (Type checker)    |          Version:  7.8.2
      Resolution:                             |         Keywords:
Operating System:  Unknown/Multiple           |     Architecture:
 Type of failure:  GHC rejects valid program  |  Unknown/Multiple
       Test Case:                             |       Difficulty:  Unknown
        Blocking:                             |       Blocked By:
                                              |  Related Tickets:
----------------------------------------------+----------------------------

Comment (by goldfire):

 What's insufficient about the algorithm I've described here? The `G` above
 is accepted by today's GHC. I don't see where a skolem escape would fail.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9200#comment:7>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler