[GHC] #8029: batch-mode recompilation checking sometimes fails

[GHC]

#8029: batch-mode recompilation checking sometimes fails
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        Reporter:  jwlato    |            Owner:
            Type:  bug       |           Status:  new
        Priority:  normal    |        Milestone:
       Component:  Compiler  |          Version:  7.6.3
      Resolution:            |         Keywords:  recompilation, batch-mode
Operating System:            |     Architecture:  Unknown/Multiple
  Unknown/Multiple           |       Difficulty:  Unknown
 Type of failure:            |       Blocked By:
  None/Unknown               |  Related Tickets:
       Test Case:            |
        Blocking:            |
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Comment (by simonmar):

 There was one small suggestion to emerge from this discussion, namely to
 add the package name to the error message, but it was acknowledged that
 that wouldn't help in the instance that sparked the ticket.  So is it
 worth keeping the ticket open?

 FWIW I don't think we should be looking for `.hs` files in one-shot
 compilation.  As Ian says, there's no requirement that they have to be in
 a discoverable location at all, and it might break existing build systems
 to add that requirement.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8029#comment:6>
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