[GHC] #1460: Problem with Monoid instance of Data.Map

[GHC]

#1460: Problem with Monoid instance of Data.Map
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        Reporter:  ahey@…            |                Owner:  (none)
            Type:  proposal          |               Status:  closed
        Priority:  normal            |            Milestone:  Not GHC
       Component:  libraries/base    |              Version:  6.6.1
      Resolution:  fixed             |             Keywords:  Data.Map
                                     |  Monoid
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by txnull):

 I find both instances useful.

 Maybe there should not be a instance at all and everybody has to create
 one as needed or create both using newtypes?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/1460#comment:13>
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