[GHC] #8993: Fold NullaryTypeClasses into MPTC

[GHC]

#8993: Fold NullaryTypeClasses into MPTC
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        Reporter:  owst              |            Owner:
            Type:  bug               |           Status:  patch
        Priority:  normal            |        Milestone:  7.10.1
       Component:  Compiler          |          Version:  7.8.2
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by Krzysztof Gogolewski <krz.gogolewski@…>):

 In [changeset:"c63a465011b99eeafbb957074e54c2e6bbf751d9/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="c63a465011b99eeafbb957074e54c2e6bbf751d9"
 Subsume NullaryTypeClasses by MultiParamTypeClasses (#8993)

 MPTC now also handles the nullary case
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8993#comment:5>
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