[GHC] #4900: Consider usage files in the GHCi recompilation check

[GHC]

#4900: Consider usage files in the GHCi recompilation check
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        Reporter:  cdsmith           |                Owner:  (none)
            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:  TH_Depends
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by nh2):

 Patrick, is this something you still want to do?

 It would be awesome to get `addDependentFile` support in ghci, as Haskell
 projects are only getting larger and being able to iterate quickly with
 ghci makes it bearable.

 I personally would be very happy even with an intial mainlined version of
 this that explicitly doesn't support boot modules, as they are quite rare
 outside of GHC itself.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4900#comment:81>
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