[GHC] #7152: Add flag to configure that skips overwriting of symlinks on install

[GHC]

#7152: Add flag to configure that skips overwriting of symlinks on install
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        Reporter:  tibbe             |            Owner:  thoughtpolice
            Type:  bug               |           Status:  new
        Priority:  high              |        Milestone:  7.8.1
       Component:  Build System      |          Version:  7.4.2
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Changes (by thoughtpolice):

 * owner:   => thoughtpolice


Comment:

 I'll look into this for 7.8.1. I agree we should maybe have some
 `gcc_select` style thing, but I don't quite know how these works or the
 details of Debian's approach, so I may just do the simple thing first and
 come back to that.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7152#comment:3>
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