[GHC] #12807: GHC is too verbose by default (source/object paths)

[GHC]

#12807: GHC is too verbose by default (source/object paths)
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        Reporter:  hsyl20            |                Owner:  hsyl20
            Type:  feature request   |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2679
       Wiki Page:                    |
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Comment (by hsyl20):

 I have added one: `-fshow-module-paths` (I'm not sure I have followed flag
 conventions, nor if the name is the best for this).

 It can be used instead of `-v2` (or higher verbosity) which may be too
 verbose.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12807#comment:3>
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