[GHC] #8599: Deriving in associated data families ignores instance's constraints

[GHC]

#8599: Deriving in associated data families ignores instance's constraints
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        Reporter:  mojojojo          |            Owner:  goldfire
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Documentation     |          Version:  7.6.3
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by Richard Eisenberg <eir@…>):

 In [changeset:"566ba6fa10ade0af159a7b86f4df706cbd6b4163/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="566ba6fa10ade0af159a7b86f4df706cbd6b4163"
 Fix #8599.

 This change is just some documentation around ignoring the context
 of an enclosing instance when processing `deriving` clauses of an
 associated data instance.
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8599#comment:4>
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