[GHC] #4012: Compilation results are not deterministic

[GHC]

#4012: Compilation results are not deterministic
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        Reporter:  kili              |                   Owner:  niteria
            Type:  bug               |                  Status:  patch
        Priority:  high              |               Milestone:  8.0.1
       Component:  Compiler          |                 Version:  6.12.2
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:  Phab:D910,
                                     |  Phab:D1073, Phab:D1133, Phab:D1192
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Comment (by simonmar):

 FYI, @niteria posted a good explanation of why the remaining problems with
 determinism are hard: https://mail.haskell.org/pipermail/ghc-
 devs/2015-September/009964.html (long, but all relevant).

 We'd welcome more input on this.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4012#comment:118>
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