[GHC] #8566: Given kind equalities are discarded

[GHC]

#8566: Given kind equalities are discarded
--------------------------------------------+------------------------------
        Reporter:  dreixel                  |            Owner:
            Type:  bug                      |           Status:  closed
        Priority:  normal                   |        Milestone:
       Component:  Compiler                 |          Version:  7.7
      Resolution:  fixed                    |         Keywords:
Operating System:  Unknown/Multiple         |     Architecture:
 Type of failure:  None/Unknown             |  Unknown/Multiple
       Test Case:  polykinds/T8566, T8566a  |       Difficulty:  Unknown
        Blocking:                           |       Blocked By:
                                            |  Related Tickets:
--------------------------------------------+------------------------------

Comment (by Simon Peyton Jones <simonpj@…>):

 In [changeset:"89d2c048c81020a701ac94d949b4d6f1ced37cfa/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="89d2c048c81020a701ac94d949b4d6f1ced37cfa"
 Keep kind-inconsistent Given type equalities (fixes Trac #8705)

 I was too eager when fixing Trac #8566, and dropped too many
 equalities on the floor, thereby causing Trac #8705.

 The fix is easy: delete code.  Lots of new comments!
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8566#comment:19>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler