.travis.yml

language: haskell
env:
  - CABALVER=1.18 GHCVER=7.4.1
  - CABALVER=1.18 GHCVER=7.4.2
  - CABALVER=1.18 GHCVER=7.6.1
  - CABALVER=1.18 GHCVER=7.6.2
  - CABALVER=1.18 GHCVER=7.6.3
  - CABALVER=1.20 GHCVER=7.8.1
  - CABALVER=1.20 GHCVER=7.8.2
  - CABALVER=1.20 GHCVER=7.8.3
  - CABALVER=1.22 GHCVER=7.10.1
  - CABALVER=1.22 GHCVER=7.10.2
  - CABALVER=1.22 GHCVER=7.10.3
  - CABALVER=1.24 GHCVER=8.0.1
  - CABALVER=head GHCVER=head

matrix:
  allow_failures:
    - env: CABALVER=head GHCVER=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

install:
  - cabal --version
  - ghc --version
  - travis_retry cabal update

script:
 - cabal install --only-dependencies --enable-tests
 - cabal configure -v2
 - cabal build
 - cabal test
 - cabal check || [ "$CABALVER" == "1.16" ]
 - cabal sdist
 - export SRC_TGZ=$(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