.travis.yml

# NB: don't set `language: haskell` here

# The following enables several GHC versions to be tested; often it's enough to test only against
# the last release in a major GHC version. Feel free to omit lines listings versions you don't
# need/want testing for.
env:
 - CABALVER=1.18 GHCVER=7.6.3 LLVMVER=3.5
 - CABALVER=1.18 GHCVER=7.8.4 LLVMVER=3.5
 - CABALVER=1.22 GHCVER=7.10.1 LLVMVER=3.5
 - CABALVER=1.22 GHCVER=7.10.2 LLVMVER=3.5
 # - CABALVER=head GHCVER=head   # see section about GHC HEAD snapshots

# Note: the distinction between `before_install` and `install` is not important.
before_install:
 - travis_retry sudo apt-get purge -y -qq libllvm3.4 llvm-3.4
 - travis_retry sudo add-apt-repository -y ppa:hvr/ghc
 - travis_retry sudo apt-get update
 - travis_retry sudo apt-get install cabal-install-$CABALVER ghc-$GHCVER # see note about happy/alex
 - export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:$PATH:$HOME/.cabal/bin:$PATH
 - |
   if [ $GHCVER = "head" ] || [ ${GHCVER%.*} = "7.8" ] || [ ${GHCVER%.*} = "7.10" ]; then
     travis_retry sudo apt-get install happy-1.19.4 alex-3.1.3
     export PATH=/opt/alex/3.1.3/bin:/opt/happy/1.19.4/bin:$PATH
   else
     travis_retry sudo apt-get install happy alex
   fi

 # update gcc and g++
 - gcc --version
 - g++ --version
 - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
 - sudo apt-get update -qq
 - sudo apt-get install -qq g++-4.8 gcc-4.8
 - gcc --version
 - g++ --version
 - sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 90
 - sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 90
 - gcc --version
 - g++ --version

 # update llvm
 - wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key|sudo apt-key add -
 - travis_retry sudo add-apt-repository "deb http://llvm.org/apt/precise/ llvm-toolchain-precise main"
 - travis_retry sudo add-apt-repository "deb http://llvm.org/apt/precise/ llvm-toolchain-precise-$LLVMVER main"
 - travis_retry sudo apt-get update
 - sudo apt-get install libedit-dev -y
 - sudo apt-get install -y llvm-$LLVMVER llvm-$LLVMVER-dev
 #- sudo ln -s /usr/bin/opt-$LLVMVER /usr/bin/opt
 - export PATH="/usr/bin:$PATH"

install:
 - cabal --version
 - echo "$(ghc --version) [$(ghc --print-project-git-commit-id 2> /dev/null || echo '?')]"
 - travis_retry cabal update
 - travis_retry cabal install -j4 --only-dependencies

# Here starts the actual work to be performed for the package under test; any command which exits
# with a non-zero exit code causes the build to fail.
script:
  - cabal install