[GHC] #14357: Document deriving strategies fully

[GHC]

#14357: Document deriving strategies fully
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        Reporter:  nomeata           |                Owner:  (none)
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Documentation     |              Version:  8.2.1
      Resolution:                    |             Keywords:  deriving
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 Joachim Breitner <mail@…>):

 In [changeset:"317aa966b3d89e45227a5870feba339e34d77a18/ghc"
 317aa966/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="317aa966b3d89e45227a5870feba339e34d77a18"
 Improve user’s guide around deriving

 In particular:
  * add an intro to “10.6. Extensions to the “deriving” mechanism” giving
    an overview,
  * make the various sections on `-XDerivingFoo` subsections of
    “10.6.3. Deriving instances of extra classes (Data, etc.)”
  * Move the reference anchors for the various `DerivingFoo` extensions
    to a more appropriate spot.
  * Add subsection “10.6.6.1. Default deriving strategy” to the
    deriving section (#14357)
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14357#comment:9>
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