notifications:
  email: false

language: c

sudo: false
cache:
  directories:
  - $HOME/.cabal
  - $HOME/.ghc
  - $HOME/.local
  - $HOME/.stack

matrix:
  include:
  # cabal/linux
  # cabal build for GHC 7.10.3 hangs
  #- env: BUILD=cabal GHCVER=7.10.3 CABALVER=1.22
  #addons: {apt: {packages: [cabal-install-1.22,ghc-7.10.3], sources: [hvr-ghc]}}

  - env: BUILD=stack RESOLVER=lts-6.35 CABALVER=1.22
    addons: {apt: {packages: [libgmp-dev,cabal-install-1.22], sources: [hvr-ghc]}}

  # stack/linux use a pre-installed cabal-install for faster builds
  # GHC 8.0.1
  - env: BUILD=stack RESOLVER=lts-7.24 CABALVER=1.24
    addons: {apt: {packages: [libgmp-dev,cabal-install-1.24], sources: [hvr-ghc]}}

  # Note COVERALLS (hpc-coveralls) requires cabal build
  - env: BUILD=cabal GHCVER=8.0.2 CABALVER=1.24 COVERALLS=y
    addons: {apt: {packages: [cabal-install-1.24,ghc-8.0.2], sources: [hvr-ghc]}}

  #- env: BUILD=cabal GHCVER=head CABALVER=head
  #  addons: {apt: {packages: [cabal-install-head,ghc-head], sources: [hvr-ghc]}}

  - env: BUILD=stack RESOLVER=nightly CABALVER=2.0
    addons: {apt: {packages: [libgmp-dev,cabal-install-2.0], sources: [hvr-ghc]}}

  #- env: BUILD=cabal GHCVER=head CABALVER=head
  #  addons: {apt: {packages: [cabal-install-head,ghc-head], sources: [hvr-ghc]}}

  # cabal/stack/osx - TODO install cabal-install
  # GHC 8.0.1
  - env: BUILD=cabal RESOLVER=lts-7.24
    os: osx

  # GHC 8.0.2
  - env: BUILD=stack RESOLVER=lts-9.3
    os: osx

  allow_failures:
  - env: BUILD=stack RESOLVER=nightly CABALVER=2.0
  #- env: BUILD=cabal GHCVER=head CABALVER=head

install: true
script:
  - |
    # Customizable options
    PACKAGE_TEST_VER="fde043d6c328090883286c69443f3ad2d73ddbb5"
    GHC_OPTIONS="-O0 -Werror"
    test -n "$COVERALLS" && \
      COVERALLS_OPTIONS="--coverage-mode=StrictlyFullLines \
                         --exclude-dir=test test"

    # Usually no changes should be needed after this
    add_path()  { eval "test -n \"\$$1\"" && eval "PATH=/opt/$2/\"\$$1\"/bin:$PATH"; true; }
    cabal_env() { test "$BUILD" = cabal && echo $1; }
    pkg_test() { echo https://raw.githubusercontent.com/harendra-kumar/package-test/$1/package-test.sh; }

    CURL=$(which curl)
    PATH=/bin:/usr/bin
    add_path GHCVER   ghc
    add_path CABALVER cabal

  # TRAVIS vars are needed by hpc-coveralls
  - env -i
      LC_ALL=C.UTF-8
      TRAVIS=$TRAVIS
      TRAVIS_JOB_ID=$TRAVIS_JOB_ID
      PATH=$PATH
      BUILD=$BUILD
      RESOLVER=$RESOLVER
      GHCVER=$GHCVER
      GHC_OPTIONS="$GHC_OPTIONS"
      COVERALLS_OPTIONS="$COVERALLS_OPTIONS"
      CABAL_REINIT_CONFIG=y
      TEST_INSTALL=y
      $(cabal_env CABALVER=$CABALVER)
      $(cabal_env CABAL_CHECK_RELAX=y)
      $(cabal_env CABAL_NO_SANDBOX=y)
      $(cabal_env CABAL_HACKAGE_MIRROR=hackage.haskell.org:http://hackage.fpcomplete.com)
      /bin/bash <($CURL -sL $(pkg_test $PACKAGE_TEST_VER))