[GHC] #15988: Remove Text.Printf and System.Console.GetOpt from base

[GHC]

#15988: Remove Text.Printf and System.Console.GetOpt from base
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        Reporter:  andrewthad        |                Owner:  (none)
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:  8.6.3
       Component:  Compiler          |              Version:  8.6.2
      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 svenpanne):

 Replying to [ticket:15988 andrewthad]:
 > [...] There would be breakage from doing this, but libraries and
 applications that use these APIs would only need to add a single line to
 `build-depends` to continue being compatible with all versions of `base`.
 [...]

 Hmmm, I don't think it's that easy: If you add the proposed `getopt`
 package to `build-depends` and compile with current `base`, GHC will see
 *two* implementations of `System.Console.GetOpt`: One from `base` and one
 from `getopt`. I really hope that this will result in a compilation error,
 silently picking one of the two implementations would be really, really
 bad...


 I think you will at least have to guard your `build-depends` with a `if
 impl(ghc >= X.Y)`.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15988#comment:1>
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