[GHC] #14357: Document deriving strategies fully

[GHC]

#14357: Document deriving strategies fully
-------------------------------------+-------------------------------------
        Reporter:  nomeata           |                Owner:  (none)
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Documentation     |              Version:  8.2.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by RyanGlScott):

 I agree that the "wiki page contains too much stuff that is confusing for
 users", which is precisely why I didn't inline the gory details into the
 users' guide in the first place, and left a link for adventurous readers.
 But I consider the algorithm for choosing when GHC will default to a
 particular strategy to be an especially gory giblet. (If you don't believe
 me, try to condense the information
 [https://ghc.haskell.org/trac/ghc/wiki/Commentary/Compiler/DerivingStrategies#Thederivingstrategyresolutionalgorithm
 here] into something short and snappy!) So I don't know what you're
 expecting the users' guide to say in this regard.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14357#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler