[Hackage] #230: setup haddock ignores LANGUAGE CPP pragma

[Hackage]

#230: setup haddock ignores LANGUAGE CPP pragma
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  Reporter:  ross at soi.city.ac.uk  |        Owner:           
      Type:  defect               |       Status:  new      
  Priority:  normal               |    Milestone:  Cabal-2.0
 Component:  Cabal library        |      Version:  1.2.3.0  
  Severity:  normal               |   Resolution:           
  Keywords:                       |   Difficulty:  normal   
Ghcversion:  6.8.2                |     Platform:           
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Comment (by duncan):

 And of course we have the same problem with `{-# OPTIONS -fglasgow-exts
 -cpp #-}` which is generated by `alex`. So even if you didn't realise you
 use `CPP`, if you use `alex` then you do and then haddock fails because we
 don't run `cpp` on that file. So if we go looking for `LANGUAGE` pragmas
 then we'd also have to do the same for `OPTIONS` (and `OPTIONS_*`)
 pragmas.

 Seems that `getOptionsFromSource` gets those too which is nice. Perhaps we
 should just do that for every file in builds and when haddocking.

-- 
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/230#comment:3>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects