[GHC] #10365: Implement Semigroup as a superclass of Monoid Proposal (Phase 1)

[GHC]

#10365: Implement Semigroup as a superclass of Monoid Proposal (Phase 1)
-------------------------------------+-------------------------------------
        Reporter:  gidyn             |                Owner:  quchen
            Type:  feature request   |               Status:  patch
        Priority:  high              |            Milestone:  8.0.1
       Component:  libraries/base    |              Version:  7.10.1
      Resolution:                    |             Keywords:  report-impact
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D1284
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by rwbarton):

 Yes, just give `sconcat` type `s -> [s] -> s`.

 A module being included in a package that is a dependency of a popular
 package is not a compelling reason to move that module into `base`! I mean
 I don't even know what to say to that.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10365#comment:34>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler