.travis.yml

# Use new container infrastructure to enable caching
sudo: false

# Choose a lightweight base image; we provide our own build tools.
language: c

# Caching so the next build will be fast too.
cache:
  directories:
  - $HOME/.ghc
  - $HOME/.cabal
  - $HOME/.stack
  - $HOME/.stack-work

# The different configurations we want to test. We have BUILD=cabal which uses
# cabal-install, and BUILD=stack which uses Stack. More documentation on each
# of those below.
#
# We set the compiler values here to tell Travis to use a different
# cache file per set of arguments.
#
# If you need to have different apt packages for each combination in the
# matrix, you can use a line such as:
#     addons: {apt: {packages: [libfcgi-dev,libgmp-dev]}}
matrix:
  include:
  # We grab the appropriate GHC and cabal-install versions from hvr's PPA. See:
  # https://github.com/hvr/multi-ghc-travis
  # Quick metadata check
  - env: BUILD=meta CABALVER=2.2
    compiler: ": #cabal"
    addons: {apt: {packages: [cabal-install-2.2], sources: [hvr-ghc]}}

  # build with cabal new-build
  # TODO: Fix build errors on GHC cabal new-build
  # Once the errors are fixed we can put these back in un-allowed failures
  - env: BUILD=cabal GHCVER=7.10.3 CABALVER=2.2 HAPPYVER=1.19.5 ALEXVER=3.1.7
    compiler: ": #GHC 7.10.3"
    addons:
      apt:
        update: true
        packages: [cabal-install-2.2,ghc-7.10.3,happy-1.19.5,alex-3.1.7]
        sources: [hvr-ghc]
  - env: BUILD=cabal GHCVER=8.0.1 CABALVER=2.2 HAPPYVER=1.19.5 ALEXVER=3.1.7
    compiler: ": #GHC 8.0.1"
    addons:
      apt:
        packages: [cabal-install-2.2,ghc-8.0.1,happy-1.19.5,alex-3.1.7]
        sources: [hvr-ghc]
        update: true
  - env: BUILD=cabal GHCVER=8.2.2 CABALVER=2.2 HAPPYVER=1.19.5 ALEXVER=3.1.7
    compiler: ": #GHC 8.2.2"
    addons:
      apt:
        packages: [cabal-install-2.2,ghc-8.2.2,happy-1.19.5,alex-3.1.7]
        sources: [hvr-ghc]
        update: true
  - env: BUILD=cabal GHCVER=8.4.3 CABALVER=2.2 HAPPYVER=1.19.5 ALEXVER=3.1.7
    compiler: ": #GHC 8.4.3"
    addons:
      apt:
        packages: [cabal-install-2.2,ghc-8.4.3,happy-1.19.5,alex-3.1.7]
        sources: [hvr-ghc]
        update: true

  # Build with the newest GHC and cabal-install. This is an accepted failure,
  # see below.
  - env: BUILD=cabal GHCVER=head  CABALVER=head HAPPYVER=1.19.5 ALEXVER=3.1.7
    compiler: ": #GHC HEAD"
    addons:
      apt:
        packages: [cabal-install-head,ghc-head,happy-1.19.5,alex-3.1.7]
        sources: [hvr-ghc]
        update: true

  # The Stack builds. We can pass in arbitrary Stack arguments via the ARGS
  # variable, such as using --stack-yaml to point to a different file.
  - env: BUILD=stack ARGS=""
    compiler: ": #stack default"
    addons:
      apt:
        packages: [ghc-7.10.3]
        sources: [hvr-ghc]
        update: true

  # Build on OS X in addition to Linux
  - env: BUILD=stack ARGS=""
    compiler: ": #stack default osx"
    os: osx
  - env: BUILD=cabal
    compiler: ": #GHC default osx"
    os: osx

  allow_failures:
  - env: BUILD=cabal GHCVER=head  CABALVER=head HAPPYVER=1.19.5 ALEXVER=3.1.7
  - env: BUILD=stack ARGS=""
    os: linux

before_install:
# Using compiler above sets CC to an invalid value, so unset it
- unset CC

# We want to always allow newer versions of packages when building on GHC HEAD
- CABALARGS=""
- if [ "x$GHCVER" = "xhead" ]; then CABALARGS=--allow-newer; fi

# Download and unpack the stack executable
- export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:$HOME/.local/bin:/opt/alex/$ALEXVER/bin:/opt/happy/$HAPPYVER/bin:$HOME/.cabal/bin:$PATH
- mkdir -p ~/.local/bin
- |
  if [ `uname` = "Darwin" ]
  then
    travis_retry curl --insecure -L https://www.stackage.org/stack/osx-x86_64 | tar xz --strip-components=1 --include '*/stack' -C ~/.local/bin
    travis_retry brew update
    brew install ghc cabal-install sdl2
  else
    travis_retry curl -L https://www.stackage.org/stack/linux-x86_64 | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack'
  fi

# Download, make and install SDL2-2.0.8 (stable)
- |
  travis_retry curl -L https://www.libsdl.org/release/SDL2-2.0.8.tar.gz | tar xz
  cd SDL2-2.0.8
  ./configure
  make
  sudo make install

- PACKAGES=$(stack --install-ghc query locals | grep '^ *path' | sed 's@^ *path:@@')

install:
- echo "$(ghc --version) [$(ghc --print-project-git-commit-id 2> /dev/null || echo '?')]"
- if [ -f configure.ac ]; then autoreconf -i; fi
- |
  set -ex
  case "$BUILD" in
    stack)
      stack --no-terminal --install-ghc $ARGS test --bench --only-dependencies
      ;;
    meta)
      cabal --version
      ;;
    cabal)
      cabal --version
      travis_retry cabal update
      cabal new-build --only-dependencies $CABALARGS all
      ;;
  esac
  set +ex

script:
- |
  set -ex
  case "$BUILD" in
    stack)
      stack --no-terminal $ARGS test --bench --no-run-benchmarks --haddock --no-haddock-deps
      ;;
    meta)
      for dir in $PACKAGES
      do
        pushd $dir
        cabal check
        cabal sdist
        popd
      done
      ;;
    cabal)
        cabal new-build $CABALARGS all
        cabal new-test $CABALARGS all
        # cabal new-bench $CABALARGS all # uncomment when/if we add benchmarks
      ;;
  esac
  set +ex