language: haskell

env:
  global:
    # OAUTH_CONSUMER_KEY
    - secure: "U3hh6wJf87tdZmwLtPyMQ0ci39ouKvTm/JCi0CCz2jaPvWZR+4Tt7aYV5WYqzjSmgfBOqKpXTpwFBcvvWRty8rI1b8OtrlljC1zUcgf/hsz3hfPtv+GKW/ldYnqg7znyeAdxWEF1a4JszKgOJaGMdX7zSpFewgwEq7T4jAlebLA="
    # OAUTH_CONSUMER_SECRET
    - secure: "I4BGd16zNQE3WjnwgdT7OM5sIIMtT9DMFPNdnWJPcgYndDovnFAUDoTomaGo0Wue4h64vGWl26f2Nm04i2upJXxkzFFtU5Az6cwUjzkOve1yqrkkyPFTXC8MLQYX3Zz8scQ8h1IJCn0Luu5HsHsool6IFZpiUovLZbDXmY44yH4="
    # OAUTH_ACCESS_TOKEN
    - secure: "dW2pYRplxJ7HmJEo3lMgLlzfdOylBvWiV4PJt1j4GMDPJBOu3RM0h3zNkkxDoS9D0wWRkBEH0iN2Bh08v2z7sJtF3f/kgLvPlOy5mNSYcozwMdHJRlJEcXaGULHbZ4p79lVIOdTAhY2WU2QdP7PEv0BiqqVcysnfK0TGkTa+KEc="
    # OAUTH_ACCESS_SECRET
    - secure: "I5hzi7sONDn8KJAhmkroHsGNJ2zUxYq2iGamTV9lgMUDH0bwpMx+guzfZr+fGesdlUphM0t+ZCh9YH8BoVJsjZ/db9u/lotg78DKp1QwhrWnISqWj6TIfXrSLPkBwY+xFtxl6Ihsjyl+ileiK5sb0C9mC+zXidgBqEM73miAokY="
  matrix:
    - GHCVER=7.4.2
    - GHCVER=7.6.3
    - GHCVER=7.8.3 USE_COVERALLS=1 CABAL_FLAGS="-frun-integrated-test"
    - GHCVER=head

matrix:
  allow_failures:
    - env: GHCVER=7.4.2
    - env: GHCVER=head

before_install:
  - |
    if [ $GHCVER = `ghc --numeric-version` ]; then
      echo "use system ghc: `which ghc` `ghc --numeric-version`"
    else
      travis_retry sudo add-apt-repository -y ppa:hvr/ghc
      travis_retry sudo apt-get update
      travis_retry sudo apt-get install  -y --force-yes cabal-install-1.18 ghc-$GHCVER
      export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/1.18/bin:$PATH
      echo "use ppa:hvr/ghc: `which ghc` `ghc --numeric-version`"
    fi

install:
  - export PATH=$HOME/.cabal/bin:$PATH
  - which cabal
  - travis_retry cabal update
  # GHC 7.8.3 exports transformers-0.3.0, but happy and our package installs transformers 0.4 series.
  # However, doctest fails when we have multiple version of transformers.
  # To prevent this, we restrict transformers version to (< 0.4)
  - cabal install happy --constraint="transformers < 0.4"
  - cabal install --only-dependencies --enable-tests
  - "[ -n \"$USE_COVERALLS\" ] && travis_retry cabal install hpc-coveralls || true"
  - ghc-pkg list

script:
  - |
    if [ -n "$USE_COVERALLS" ]; then
      cabal configure --enable-tests --enable-library-coverage $CABAL_FLAGS
    else
      cabal configure --enable-tests $CABAL_FLAGS
    fi
  - cabal build
  - |
    if [ -n "$USE_COVERALLS" ]; then
      run-cabal-test --show-details=always
    else
      cabal test --show-details=always
    fi

after_script:
  - "[ -n \"$USE_COVERALLS\" ] && hpc-coveralls --exclude-dir=tests spec_main || true"