[GHC] #4900: DEPENDS pragma

[GHC]

#4900: DEPENDS pragma
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    Reporter:  cdsmith           |        Owner:              
        Type:  feature request   |       Status:  new         
    Priority:  normal            |    Milestone:  7.4.1       
   Component:  Build System      |      Version:              
    Keywords:                    |     Testcase:              
   Blockedby:                    |   Difficulty:              
          Os:  Unknown/Multiple  |     Blocking:              
Architecture:  Unknown/Multiple  |      Failure:  None/Unknown
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Comment(by GregWeber):

 I understand that it would be much better to have a DEPENDS pragma,
 however, I am wondering if we can get away without requiring it. There
 could be a warning that can be turned on and off. The warning could state
 the exact DEPENDS information missing to make it easy to add DEPENDS with
 the proper file path. And a library writer distributing their code should
 heed such a warning, but maybe it is ok for the application writer (our
 main Yesod use case) to ignore it?

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4900#comment:14>
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