[GHC] #10909: Test suite: Support non-utf8 locale

[GHC]

#10909: Test suite: Support non-utf8 locale
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              Reporter:  nomeata     |             Owner:
                  Type:  task        |            Status:  new
              Priority:  normal      |         Milestone:
             Component:  Test Suite  |           Version:  7.10.2
              Keywords:              |  Operating System:  Unknown/Multiple
          Architecture:              |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
             Test Case:              |        Blocked By:
              Blocking:              |   Related Tickets:
Differential Revisions:              |
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 In order to properly test #10907, it should be possible to specify a
 locale (or at least some representative values like “non-utf8-locale” and
 “utf8-locale” in the options of a test. Currently, the test suite runs
 completely in an utf8-locale.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10909>
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