[GHC] #12612: Allow kinds of associated types to depend on earlier associated types

[GHC]

#12612: Allow kinds of associated types to depend on earlier associated types
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        Reporter:  davemenendez      |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:  TypeInType
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #11962            |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by andrewthad):

 For what it's worth, a fix for this would also help simplify some of my
 code.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12612#comment:4>
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