[GHC] #9184: Allow the use of Python 3 when building GHC

[GHC]

#9184: Allow the use of Python 3 when building GHC
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              Reporter:  aspidites   |            Owner:
                  Type:  feature     |           Status:  new
  request                            |        Milestone:
              Priority:  normal      |          Version:  7.8.2
             Component:  Build       |         Keywords:  python
  System                             |     Architecture:  Unknown/Multiple
            Resolution:              |       Difficulty:  Easy (less than 1
      Operating System:              |  hour)
  Unknown/Multiple                   |       Blocked By:
       Type of failure:              |  Related Tickets:
  None/Unknown                       |
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Comment (by gintas):

 Any progress? I ran into this while messing around with a Windows build of
 GHC on msys2, which uses pacman, where python3 is the default.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9184#comment:6>
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