[GHC] #14623: Allow qAddDependentFile on directories

[GHC]

#14623: Allow qAddDependentFile on directories
-------------------------------------+-------------------------------------
           Reporter:  ryantrinkle    |             Owner:  (none)
               Type:  feature        |            Status:  new
  request                            |
           Priority:  normal         |         Milestone:
          Component:  Template       |           Version:  8.2.2
  Haskell                            |
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 Currently, qAddDependentFile can only be applied to files; when applied to
 a directory, the following exception occurs:


 {{{
 *** Exception: path/to/dir: openBinaryFile: inappropriate type (is a
 directory)
 }}}

 However, it can be useful to walk directory trees at compile time with
 TemplateHaskell, and it would be nice to ensure that rebuilds reflect
 changes to directory structure, even when files are not changed.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14623>
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