[GHC] #9966: Allow switching to different monads in GHCi

[GHC]

#9966: Allow switching to different monads in GHCi
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        Reporter:  gridaphobe        |                   Owner:
            Type:  feature request   |                  Status:  new
        Priority:  low               |               Milestone:
       Component:  GHCi              |                 Version:  7.11
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
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Comment (by monoidal):

 Duplicate of #4316?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9966#comment:2>
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