[GHC] #10869: Option to dump preprocessed source

[GHC]

#10869: Option to dump preprocessed source
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        Reporter:  phischu           |                   Owner:
            Type:  feature request   |                  Status:  closed
        Priority:  low               |               Milestone:
       Component:  Driver            |                 Version:  7.10.2
      Resolution:  invalid           |                Keywords:  easy
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Changes (by thomie):

 * status:  new => closed
 * resolution:   => invalid


Comment:

 Replying to [comment:2 mpickering]:
 > I'm fairly sure there is already this option? Maybe it's `-E`..

 Exactly, see:
 https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/modes.html
 #options-order

   The option -E runs just the pre-processing passes of the compiler,
 dumping the result in a file.

 GHC doesn't run `happy, alex, c2hs or hsc2hs` for you, so I don't think
 there's anything to do here.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10869#comment:3>
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