[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:  patch
  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:  Phab:D310   |
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Comment (by Krzysztof Gogolewski <krz.gogolewski@…>):

 In [changeset:"d576fc38d9493c4979217fa36565f1f97fcc03d4/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="d576fc38d9493c4979217fa36565f1f97fcc03d4"
 Python 3 support, second attempt (Trac #9184)

 Summary:
 This is a fixup of https://phabricator.haskell.org/D233

 The only difference is in findTFiles (first commit), which
 previously broke Windows runner; now I translated literally
 instead attempting to improve it, and checked it works.

 Test Plan:
 I used validate under 2,3 on Linux and under 2 on msys2.
 On Windows I've seen a large number of failures, but they don't
 seem to be connected with the patch.

 Reviewers: hvr, simonmar, thomie, austin

 Reviewed By: austin

 Subscribers: thomie, carter, ezyang, simonmar

 Differential Revision: https://phabricator.haskell.org/D310

 GHC Trac Issues: #9184
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9184#comment:19>
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