[GHC] #12993: GHC 8.0.2-rc2 template Haskell interface file issue

[GHC]

#12993: GHC 8.0.2-rc2 template Haskell interface file issue
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           Reporter:  glguy          |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.0.2-rc1
           Keywords:                 |  Operating System:  MacOS X
       Architecture:                 |   Type of failure:  GHC rejects
  Unknown/Multiple                   |  valid program
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 When I try to build language-lua as found on Hackage with GHC 8.0.2-rc2 I
 get the following error. This package works with 8.0.1. I'm using the
 latest release of cabal-install/Cabal and alex-3.2.1

 {{{#!hs
 src/Language/Lua/Annotated/Lexer.x:149:14: error:
     • Can't find interface-file declaration for variable AlexTools.runA
         Probable cause: bug in .hi-boot file, or inconsistent .hi file
         Use -ddump-if-trace to get an idea of which file caused the error
     • In the expression:
         AlexTools.runA x_a28iM inp_a28iQ x_a28iK x_a28iL mode_a28iP
       In the expression:
         case
             AlexTools.runA x_a28iM inp_a28iQ x_a28iK x_a28iL mode_a28iP
         of {
           (mode'_a28iR, ts_a28iS)
             -> (ts_a28iS ++ (go_a28iO mode'_a28iR x_a28iK)) }
       In a case alternative:
           AlexToken x_a28iK x_a28iL x_a28iM
             -> case
                    AlexTools.runA x_a28iM inp_a28iQ x_a28iK x_a28iL
 mode_a28iP
                of {
                  (mode'_a28iR, ts_a28iS)
                    -> (ts_a28iS ++ (go_a28iO mode'_a28iR x_a28iK)) }
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12993>
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