.travis.yml

language: haskell

env:
  - GHCVER=7.6.3
  - GHCVER=7.8.4
  - GHCVER=7.10.1

before_install:
  # If $GHCVER is the one travis has, don't bother reinstalling it.
  # We can also have faster builds by installing some libraries with
  # `apt`. If it isn't, install the GHC we want from hvr's PPA along
  # with cabal-1.18.
  - |
      # Install the GHC we want from hvr's PPA
      travis_retry sudo add-apt-repository -y ppa:hvr/ghc
      travis_retry sudo apt-get update
      travis_retry sudo apt-get install cabal-install-1.22 ghc-$GHCVER happy libphash0-dev
      export CABAL=cabal-1.22
      export PATH=/opt/ghc/$GHCVER/bin:$PATH
  # Uncomment whenever hackage is down.
  # - mkdir -p ~/.cabal && cp travis/config ~/.cabal/config && $CABAL update
  - $CABAL update

  # Update happy when building with GHC head
  - |
    if [ $GHCVER = "7.8.4" ] || [ $GHCVER = "7.10.1" ]; then
      $CABAL install --constraint=transformers\ installed happy alex
      export PATH=$HOME/.cabal/bin:$PATH
    fi

install:
  - $CABAL install --dependencies-only --enable-tests
  - $CABAL configure --enable-tests -flib-Werror

script:
  - $CABAL build
  - $CABAL test --show-details=always

  # tests that a source-distribution can be generated
  - $CABAL sdist

  # check that the generated 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