[GHC] #10950: Sphinx "RecursionError: maximum recursion depth exceeded while pickling an object"

[GHC]

#10950: Sphinx "RecursionError: maximum recursion depth exceeded while pickling an
object"
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        Reporter:  ezyang            |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Documentation     |              Version:  7.11
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash                              |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by olsner):

 Adding the `-E` option to sphinx ("don't use a saved environment, always
 read all files") seems to work around it for me, presumably because it
 disables the code that is trying to pickle stuff.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10950#comment:7>
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