[GHC] #10741: add flag to dump module and package dependencies

[GHC]

#10741: add flag to dump module and package dependencies
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        Reporter:  elaforge          |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:
      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 thomie):

 You could write your own **Frontend plugin** for this:
 https://github.com/ghc/ghc/commit/a3c2a26b3af034f09c960b2dad38f73be7e3a655.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10741#comment:1>
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