[GHC] #11153: building lens-4.12.3 impossible happened: dupe _hs_primitive_memcpy

[GHC]

#11153: building lens-4.12.3 impossible happened: dupe _hs_primitive_memcpy
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        Reporter:  blippy             |                Owner:
            Type:  bug                |               Status:  infoneeded
        Priority:  normal             |            Milestone:
       Component:  libraries (other)  |              Version:  7.10.2
      Resolution:                     |             Keywords:
Operating System:  Windows            |         Architecture:  x86
 Type of failure:  None/Unknown       |            Test Case:
      Blocked By:                     |             Blocking:
 Related Tickets:                     |  Differential Rev(s):
       Wiki Page:                     |
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Comment (by blippy):

 Result of
   ghc-pkg list
 is at http://pastebin.com/h4XA7Ksy

 Result of
   stack install lens
 is at http://pastebin.com/Wqk7DbmK

 Performing
   cabal install lens
 seems to be OK though: http://pastebin.com/zxDjvP59 . lens-4.13
 successfully installed.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11153#comment:2>
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