[GHC] #3379: GHC should use the standard binary package

[GHC]

#3379: GHC should use the standard binary package
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        Reporter:  igloo             |                Owner:  (none)
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  6.10.4
      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:                    |
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Comment (by ulysses4ever):

 Hey, Ben, I missed the second part of your last post, unfortunately (read
 the email notification where it only shows the first version). I think
 there is an interesting design task here. You see, `Data.Binary` deals
 solely with serialization while GHC's Binary has serialization to the
 particular type of storage (`BinHandle` structure). As the first step, I
 think, we could factorize `GHC.Binary` to just use `Data.Binary` instead
 of trying to completely remove the former at once. For that, something
 like

 {{{#!haskell
 instance Data.Binary a => GHC.Binary a where
   ...
 }}}

 could work? My impression is that most of the instances of `GHC.Binary`
 are really boring, and all clever business is done directly with
 `BinHandle`s inside `Iface`-related modules.

 Discalaimer: I'm not totally sure what this `BinHandle`-related business
 is about. I read some Notes in the sources but didn't get much. The `IORef
 BinArray` part makes sense, but the rest…

 For now, I'm stuck with the error I listed above. Strangely enough, when
 doing `make test` on my brunch with `Data.Binary`-derived instance of
 `GHC.Binary ArgFlag`, I randomly get either that one error I mentioned
 above, or 518 errors (including the one above), all are with "bad stderr"
 or "bad stdout".

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3379#comment:19>
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