[GHC] #12596: can't find interface-file declaration

13 Sep 2016


      #12596: can't find interface-file declaration
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           Reporter:  mwotton        |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.0.1
           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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 full repro at https://github.com/mwotton/liftwoes/issues/1

 ```
 /home/mark/projects/liftwoes/src/Lib.hs:14:11: error:
     • Can't find interface-file declaration for variable
 Data.Text.Internal.pack
         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 first argument of ‘(:)’, namely
         ‘Data.Text.Internal.pack ((:) 'A' [])’
       In the first argument of ‘HS.fromList’, namely
 ```

 {{{#!hs
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE TemplateHaskell   #-}
 module Lib where

 import           Data.Data
 import qualified Data.Set                   as HS
 import qualified Data.Text                  as T
 import qualified Data.Text.IO               as T
 import           Data.Time
 -- import           Instances.TH.Lift
 import           Instances
 import           Language.Haskell.TH.Syntax

 table = $(do r <- runIO (HS.fromList . T.lines  <$> T.readFile
 "/usr/share/dict/words")
              [|r|] )

 someFunc = do
   print $ HS.member "foo" table
 }}}

--
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12596
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