[GHC] #10543: MacOS: validate fails on \u

[GHC]

#10543: MacOS: validate fails on \u
-------------------------------------+-------------------------------------
              Reporter:  trommler    |             Owner:
                  Type:  bug         |            Status:  new
              Priority:  normal      |         Milestone:
             Component:  Build       |           Version:  7.10.1
  System                             |  Operating System:  MacOS X
              Keywords:              |   Type of failure:  Building GHC
          Architecture:              |  failed
  Unknown/Multiple                   |        Blocked By:
             Test Case:              |   Related Tickets:
              Blocking:              |
Differential Revisions:              |
-------------------------------------+-------------------------------------
 Running validate on MacOS fails with this error (due to `-Werror`):
 {{{
 libraries/Cabal/Cabal/Distribution/Simple/BuildTarget.hs:392:24:
      error: \u used with no following hex digits; treating as '\' followed
 by identifier [-Werror,-Wunicode]
 matchBuildTarget pkg = \utarget fexists ->
                        ^
 1 error generated.
 make[1]: *** [utils/ghc-cabal/dist/build/tmp/ghc-cabal] Error 1
 }}}

 I am using ghc from homebrew to bootstrap on OS X 10.10.3.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10543>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler