[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:                    |
  prime:Libraries/Proposals/SemigroupMonoid|
-------------------------------------+-------------------------------------
Changes (by hvr):

 * wikipage:   => prime:Libraries/Proposals/SemigroupMonoid


Old description:

> More details in Proposal/SemigroupMonoid
>
> === Phase 1 (GHC 7.12)
>
> Phase 1 consists in (at the very least) moving `Data.Semigroup` and
> `Data.List.NonEmpty` into `base` for GHC 7.12 (aka 8.0).
>
> If there's enough time we will also implement a warning as part of the
> first phase:
>
> > Add a warning about definitions of an operator named `(<>)` that
> indicate it will be coming into Prelude in 7.14. We should warn about
> missing Semigroup instances at any use site of `(<>)` as they'll break in
> 7.14.

New description:

 More details in prime:Libraries/Proposals/SemigroupMonoid

 === Phase 1 (GHC 7.12)

 Phase 1 consists in (at the very least) moving `Data.Semigroup` and
 `Data.List.NonEmpty` into `base` for GHC 7.12 (aka 8.0).

 If there's enough time we will also implement a warning as part of the
 first phase:

 > Add a warning about definitions of an operator named `(<>)` that
 indicate it will be coming into Prelude in 7.14. We should warn about
 missing Semigroup instances at any use site of `(<>)` as they'll break in
 7.14.

--

Comment:

 update wiki page link

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10365#comment:41>
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