.travis.yml

notifications:
  email: false

env:
 - CABALVER=1.18 GHCVER=7.6.3
 - CABALVER=1.18 GHCVER=7.8.4 STACKAGEVER=snapshot/lts-2.11
 - CABALVER=1.22 GHCVER=7.10.1 STACKAGEVER=nightly

# Note: the distinction between `before_install` and `install` is not important.
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 hlint
 - export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:$PATH

install:
 - cabal --version
 - echo "$(ghc --version) [$(ghc --print-project-git-commit-id 2> /dev/null || echo '?')]"
 - |
   if [ -n "$STACKAGEVER" ]; then
       wget https://www.stackage.org/$STACKAGEVER/cabal.config
   fi
 - travis_retry cabal update
 - cabal install --only-dependencies --enable-tests --enable-benchmarks

# 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:
 - hlint src test
 - cabal configure --enable-tests --enable-benchmarks -v2  # -v2 provides useful information for debugging
 - cabal build   # this builds all libraries and executables (including tests/benchmarks)
 - cabal test
 - cabal check
 - cabal sdist   # tests that a source-distribution can be generated