[GHC] #16219: Backpack - TH+indefinite module interface file error

[GHC]

#16219: Backpack - TH+indefinite module interface file error
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        Reporter:  lightandlight     |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.7
      Resolution:                    |             Keywords:  backpack
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 ezyang):

 It looks like the problem is GHC is incorrectly attempting to build the
 object file for the indefinite package. Working versus non-working
 (working version by commenting out TemplateHaskell)

 {{{
 -[2 of 2] Compiling C                ( library-b/C.hs, nothing )
 +Read the interface file dist/build/library-b/C.hi
 +[2 of 2] Compiling C                ( library-b/C.hs,
 /tmp/ghc11640_0/ghc_1.o )
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16219#comment:5>
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