[GHC] #14969: Underconstrained typed holes are non-performant

[GHC]

#14969: Underconstrained typed holes are non-performant
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        Reporter:  johnleo           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.5
      Resolution:                    |             Keywords:  TypedHoles
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Compile-time      |            Test Case:
  performance bug                    |  ghci/scripts/T14969
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Tritlo):

 I've reworked the substitution suggestions a lot over the past few weeks,
 and I've updated the sorting to be based on sizes of matches rather than
 by subsumption (though sorting by subsumption is still available via a
 flag). I hope to submit the patch this weekend, after I've updated the
 documentation.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14969#comment:12>
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