[GHC] #10539: ghc internal error compiling simple template haskell + lens program

[GHC]

#10539: ghc internal error compiling simple template haskell + lens program
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        Reporter:  andrew.wja        |                   Owner:
            Type:  bug               |                  Status:  infoneeded
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.10.1
      Resolution:                    |                Keywords:  lens
Operating System:  Linux             |  template-haskell
 Type of failure:  Compile-time      |            Architecture:  x86_64
  crash                              |  (amd64)
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
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Changes (by rwbarton):

 * status:  new => infoneeded


Comment:

 No because even after adding `{-# LANGUAGE TemplateHaskell,
 DeriveDataTypeable #-}` I get
 {{{
 Syntax.hs:24:11: Not in scope: ‘uniplate’
 }}}

 On the other hand, I guess that means the splice `makeLenses ''Arith`,
 which is probably where GHC crashes for you, has already run successfully,
 so in that sense I can't reproduce it either.

 Can you double check the reproducer? Maybe you minimized it too much?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10539#comment:2>
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