[GHC] #15551: TH-reified type classes have redundant tyvars/class constraints on each method

[GHC]

#15551: TH-reified type classes have redundant tyvars/class constraints on each
method
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        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  8.8.1
       Component:  Template Haskell  |              Version:  8.4.3
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D5088
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * status:  merge => closed
 * resolution:   => fixed
 * milestone:  8.6.1 => 8.8.1


Comment:

 I'm going to request that this //not// be merged to GHC 8.6.1, since it
 has the potential to break code which assumes the existence of these
 redundant tyvars/class constraints when reified. (I'll update the
 Migration Guide for 8.8 to address this.)

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15551#comment:4>
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