[GHC] #16008: GHC HEAD type family regression involving invisible arguments

[GHC]

#16008: GHC HEAD type family regression involving invisible arguments
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  patch
        Priority:  highest           |            Milestone:  8.8.1
       Component:  Compiler (Type    |              Version:  8.7
  checker)                           |             Keywords:  TypeFamilies,
      Resolution:                    |  TypeInType
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  GHC rejects       |  Unknown/Multiple
  valid program                      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D5435
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * status:  new => patch
 * differential:   => Phab:D5435


Comment:

 Oh wow, I was not aware of `checkConsistencyConstraints`! That's a much
 cleaner solution, and better yet, it doesn't cause any existing tests to
 change their expected output.

 I've submitted a patch as Phab:D5435.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16008#comment:5>
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