env:
  - lower_bound_dependencies=1 
    ghc=7.6.1
  - lower_bound_dependencies=1 
    ghc=7.8.1
  - ghc=7.6.1
  - ghc=7.8.1

install:
  # Set up the Shell to treat the semicolon as &&
  - set -o pipefail && set -e
  # Install GHC and Cabal
  - 
    travis_retry sudo add-apt-repository -y ppa:hvr/ghc;
    travis_retry sudo apt-get update;
    travis_retry sudo apt-get install cabal-install-1.18 ghc-$ghc;
    export PATH=/opt/ghc/$ghc/bin:/opt/cabal/1.18/bin:$PATH;
  # Update the Cabal database
  - cabal update
  # Switch to the distro:
  - 
    export pkg_name=$(cabal info . | awk '{print $2;exit}');
    cabal sdist;
    cd dist;
    tar xzvf $pkg_name.tar.gz;
    cd $pkg_name;
  # Install the lower bound dependencies
  - 
    if [ $lower_bound_dependencies -eq 1 ];
    then
      constraint_options=(
        "--constraint=transformers==0.3.*"
        "--constraint=monad-control==0.3.*"
        "--constraint=text==1.0.*"
        "--constraint=attoparsec==0.10.*"
        "--constraint=time==1.4.*"
      );
    fi;
  # Install the "haskell-src-exts" implicit dependency
  - cabal install -j ${constraint_options[@]} happy
  # Install the library dependencies
  - cabal install -j ${constraint_options[@]} --only-dependencies
  # Build the library
  - cabal build
  # Install the remaining dependencies
  - cabal install -j --only-dependencies --enable-tests --enable-benchmarks --force-reinstalls
  # Configure and build the remaining stuff
  - cabal configure --enable-tests --enable-benchmarks && cabal build

script:
  - cabal test --show-details=always