[GHC] #9663: Windows build process should give better message if you forgot to clone tarballs

[GHC]

#9663: Windows build process should give better message if you forgot to clone
tarballs
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              Reporter:  ezyang      |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Build       |          Version:  7.9
  System                             |         Keywords:
            Resolution:              |     Architecture:  Unknown/Multiple
      Operating System:  Windows     |       Difficulty:  Unknown
       Type of failure:              |       Blocked By:
  None/Unknown                       |  Related Tickets:  #9218
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Changes (by gintas):

 * related:   => #9218


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9663#comment:1>
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