[GHC] #10600: -fwarn-incomplete-patterns doesn't work with -fno-code

[GHC]

#10600: -fwarn-incomplete-patterns doesn't work with -fno-code
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        Reporter:  akio              |                Owner:  ezyang
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.10.1
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect         |  Unknown/Multiple
  warning at compile-time            |            Test Case:  driver/T8101b
      Blocked By:                    |             Blocking:
 Related Tickets:  #8101             |  Differential Rev(s):  Phab:D1278
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Comment (by bgamari):

 We discussed this during the weekly meeting; no one was terribly excited
 about any of the alternatives,

  * Fix `GHC.Prim` to pass Core Lint (perhaps not even possible)
  * Add a special case to skip desugaring for `GHC.Prim`
  * Add a special case to skip Core Linting `GHC.Prim`
  * Disable Core Linting when not generating code
  * Add a command line option to specifically disable desugaring (which
 could be used by Haddock)

 The point also came up that we should really try to avoid desugaring when
 invoked by Haddock as this is otherwise wasted effort.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10600#comment:14>
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