Re: [GHC] #16104: Plugin name lookup behavior change from GHC 8.4 series

28 Dec 2018

      #16104: Plugin name lookup behavior change from GHC 8.4 series
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        Reporter:  lerkok            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.6.3
      Resolution:                    |             Keywords:
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 lerkok):

 Thanks Matt. Unfortunately that doesn't work either:

 Here's the original plugin registered:
 {{{#!hs
 $ ghc-pkg list sbvPlugin
 /usr/local/lib/ghc-8.6.3/package.conf.d
     (no packages)
 /Users/LeventErkok/.ghc/x86_64-darwin-8.6.3/package.conf.d
     sbvPlugin-0.11
 }}}

 Example test file:

 {{{#!hs
 $ cat T11.hs
 {-# OPTIONS_GHC -fplugin=Data.SBV.Plugin #-}

 module T11 where

 import Data.SBV.Plugin

 h :: Integer -> Integer
 h x = x - 1

 g :: Integer -> Integer
 g x = if x < 12 then x+1 else h x

 {-# ANN f theorem #-}
 f :: Integer -> Bool
 f x = g x < g (x+1)
 }}}

 And I still get:

 {{{#!hs
 $ ghci T11.hs
 GHCi, version 8.6.3: http://www.haskell.org/ghc/  :? for help
 [1 of 1] Compiling T11              ( T11.hs, interpreted )
 *** Exception: [SBV] Impossible happened, while trying to locate GHC name
 for: Data.Bits.complement
 CallStack (from HasCallStack):
   error, called at ./Data/SBV/Plugin/Env.hs:380:30 in
 sbvPlugin-0.11-9tpp46BgzL09G1cUaUExU2:Data.SBV.Plugin.Env
 }}}

 Exactly the same issue. It's the same problem whether I load it in `ghci`
 or compile with `ghc`.

-- 
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16104#comment:2
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