.travis.yml

env:
 - GHCVER=7.4.2 CABALVER=1.18
 - GHCVER=7.6.3 CABALVER=1.18
 - GHCVER=7.8.4 CABALVER=1.22
 - GHCVER=7.10.1 CABALVER=1.22
 - GHCVER=head  CABALVER=head

matrix:
  allow_failures:
   - env: GHCVER=7.8.4  CABALVER=1.22
   - env: GHCVER=7.10.1 CABALVER=1.22
   - env: GHCVER=head  CABALVER=head

before_install:
 - 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
 - export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:$PATH
 # Update happy when building with GHC head
 - |
   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

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

script:
 - if [ -f configure.ac ]; then autoreconf -i; fi
 - cabal configure --enable-tests --enable-library-coverage || cabal configure --enable-tests --enable-coverage
 - cabal build
 - cabal test
 - cabal sdist
# The following scriptlet checks that the resulting source distribution can be built & installed
 - export SRC_TGZ=$(cabal info . | awk '{print $2 ".tar.gz";exit}') ;
   cd dist/;
   if [ -f "$SRC_TGZ" ]; then
      cabal install --force-reinstalls "$SRC_TGZ";
   else
      echo "expected '$SRC_TGZ' not found";
      exit 1;
   fi

after_script:
 - cabal install hpc-coveralls
 - hpc-coveralls --exclude-dir=test test