[GHC] #9836: Facility to mitigate double-breakage due to Data.Version.versionTag Deprecation

[GHC]

#9836: Facility to mitigate double-breakage due to Data.Version.versionTag
Deprecation
-------------------------------------+-------------------------------------
        Reporter:  hvr               |                   Owner:
            Type:  task              |                  Status:  infoneeded
        Priority:  high              |               Milestone:  7.10.1
       Component:  libraries/base    |                 Version:
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |  Data.Version
 Type of failure:  None/Unknown      |            Architecture:
      Blocked By:                    |  Unknown/Multiple
 Related Tickets:  #2496             |               Test Case:
                                     |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------

Comment (by hvr):

 see 5b8fa46ca37caa9ec83b217a697628135da34506

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9836#comment:2>
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