[GHC] #8958: Allow role inference on datatype contexts

[GHC]

#8958: Allow role inference on datatype contexts
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        Reporter:  goldfire                    |            Owner:
            Type:  feature request             |  goldfire
        Priority:  normal                      |           Status:  closed
       Component:  Compiler                    |        Milestone:  7.8.1
      Resolution:  fixed                       |          Version:
Operating System:  Unknown/Multiple            |  7.8.1-rc2
 Type of failure:  None/Unknown                |         Keywords:
       Test Case:  roles/should_compile/T8958  |     Architecture:
        Blocking:                              |  Unknown/Multiple
                                               |       Difficulty:  Unknown
                                               |       Blocked By:
                                               |  Related Tickets:
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Comment (by Simon Peyton Jones <simonpj@…>):

 In [changeset:"b4dd5667fe84cb6030d296e9e4563d4de62f718d/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="b4dd5667fe84cb6030d296e9e4563d4de62f718d"
 Suppress uniques to stop output wobbling (test for Trac #8958)
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8958#comment:8>
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