[GHC] #8825: ghc can't determine gcc version on ru_RU locale

[GHC]

#8825: ghc can't determine gcc version on ru_RU locale
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              Reporter:  slyfox      |            Owner:
                  Type:  bug         |           Status:  closed
              Priority:  normal      |        Milestone:  7.8.4
             Component:  Compiler    |          Version:  7.8.1-rc1
            Resolution:  fixed       |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:              |       Blocked By:
  None/Unknown                       |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:  D185        |
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Comment (by refold):

 @dcoutts thinks that we should use `LANGUAGE=C` instead of `en` because
 there's no guarantee that the `en` locale is available.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8825#comment:11>
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