[GHC] #13249: Default signature check can be quite onerous

[GHC]

#13249: Default signature check can be quite onerous
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        Reporter:  bgamari           |                Owner:
            Type:  feature request   |               Status:  closed
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler (Type    |              Version:  8.1
  checker)                           |
      Resolution:  invalid           |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  GHC rejects       |  Unknown/Multiple
  valid program                      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #12918            |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by bgamari):

 * status:  new => closed
 * resolution:   => invalid


Comment:

 Yes, it is true; I was fearing this would pop up in more Hackage packages
 after running into it very early in my testing. However, so far `bytes`
 has been the only package where the constraints blew up to this extent.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13249#comment:3>
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