[GHC] #11982: Typechecking fails for parallel monad comprehensions with polymorphic let (GHC 7.10.3 through 8.6.3)

[GHC]

#11982: Typechecking fails for parallel monad comprehensions with polymorphic let
(GHC 7.10.3 through 8.6.3)
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        Reporter:  simonpj           |                Owner:  josefs
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:  ApplicativeDo
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  GHC rejects       |  Unknown/Multiple
  valid program                      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by vdukhovni):

 Replying to [comment:16 josef]:
 > In fact, I think that this ticket should be split up so that we have a
 separate ticket for ApplicativeDo. The remedies for parallel monad
 comprehension and ApplicativeDo seem very different. I'll create a new
 ticket for ApplicativeDo unless someone yells.

 FWIW, I certainly have no objections, apologies if I made a mistake in
 linking the issues in the first place.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11982#comment:17>
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