#893: Bad cabal build error message with mangled top of file
------------------------------+---------------------------------------------
Reporter: rrnewton | Owner:
Type: defect | Status: new
Priority: low | Milestone:
Component: Cabal library | Version: 1.8.0.6
Severity: normal | Keywords:
Difficulty: easy (<4 hours) | Ghcversion:
Platform: |
------------------------------+---------------------------------------------
I accidentally executed an Emacs keystroke that switched tokens around and
mangled the top of my file:
{-# Language BangPatterns, CPP #-} # OPTIONS_GHC
{--fno-warn-name-shadowing -fwarn-unused-imports #-}
When GHC is run directly on this file it gives a sensible error message
Control/Monad/Par/Stream.hs:1:36: parse error on input `#'
But when building through cabal build it looks like there is a module-
name-finding heuristic that is failing (and defaulting to Main), resulting
in this weird error message:
Building monad-par-0.1.0.2...
Control/Monad/Par/Stream.hs:1:1:
File name does not match module name:
Saw: `Main'
Expected: `Control.Monad.Par.Stream'
Which really caused me to scratch my head when I saw it ;-). ("No where
does it say Main!!") I was afraid I had messed up paths and was loading a
different version of the file from another directory or something...
--
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/893>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects
_______________________________________________
cabal-devel mailing list
cabal-devel@haskell.org
http://www.haskell.org/mailman/listinfo/cabal-devel
