Use ghc return value instead of looking for the stderr, do not throw error when an haskell module throws a build failure, e.g. because of false positives like this one (debian/arm*)
"You are using a new version of LLVM that hasn't been tested yet!
We will try though..."
Name: hedgewars-server
Version: 0.1
Synopsis: hedgewars server
Description: hedgewars server
Homepage: http://www.hedgewars.org/
License: GPL-2
Author: unC0Rr
Maintainer: unC0Rr@hedgewars.org
Category: Game
Build-type: Simple
Cabal-version: >=1.10
Executable hedgewars-server
main-is: hedgewars-server.hs
default-language: Haskell2010
Build-depends:
base >= 4.3,
containers,
vector,
bytestring,
bytestring-show,
network >= 2.3,
random,
time,
mtl >= 2,
dataenc,
hslogger,
process,
deepseq,
utf8-string,
SHA,
entropy,
zlib
if !os(windows)
build-depends: unix
ghc-options: -O2