[GHC] #7863: Verbosity level for quieter Template Haskell

[GHC]

#7863: Verbosity level for quieter Template Haskell
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              Reporter:  dolio       |            Owner:  hvr
                  Type:  feature     |           Status:  patch
  request                            |        Milestone:  7.10.1
              Priority:  low         |          Version:  7.6.3
             Component:  Template    |         Keywords:  linker
  Haskell                            |     Architecture:  Unknown/Multiple
            Resolution:              |       Difficulty:  Unknown
      Operating System:              |       Blocked By:
  Unknown/Multiple                   |  Related Tickets:  #5647
       Type of failure:              |
  None/Unknown                       |
             Test Case:              |
              Blocking:              |
Differential Revisions:  Phab:D232   |
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Comment (by Herbert Valerio Riedel <hvr@…>):

 In [changeset:"9f7e3633c692dce75c27607131bd386178fb0fcf/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="9f7e3633c692dce75c27607131bd386178fb0fcf"
 Change linker message verbosity to `-v2` (re #7863)

 With this change, the linker status logging output such as

     Loading package ghc-prim ... linking ... done.
     Loading package integer-gmp ... linking ... done.
     Loading package base ... linking ... done.

 is suppressed unless verbosity level is `-v2` or higher. This is done
 to reduce the compiler message noise when TH is involved, which can
 reduce the visibiliy of compile warnings.

 Reviewed By: ekmett, austin

 Differential Revision: https://phabricator.haskell.org/D232
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7863#comment:8>
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