[GHC] #5966: getAppUserDataDirectory does not respect XDG specification

[GHC]

#5966: getAppUserDataDirectory does not respect XDG specification
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        Reporter:  ordcoder          |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Core Libraries    |              Version:  7.4.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:  6077
 Related Tickets:                    |  Differential Rev(s):
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Changes (by hvr):

 * status:  upstream => new
 * cc: ekmett (added)


Comment:

 `directory` now provides primitives to query XDG dirs, so now the ball is
 again in GHC's court to decide how/whether to support XDG dirs.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5966#comment:13>
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