.travis.yml

# Based on https://github.com/hvr/multi-ghc-travis

language: c

# Explicitly request container-based infrastructure.
sudo: false

matrix:
  include:
    - env: CABALVER=1.18 GHCVER=7.8.4
      addons:
        apt: {packages: [cabal-install-1.18, ghc-7.8.4],  sources: [hvr-ghc]}
    - env: CABALVER=1.22 GHCVER=7.10.3
      addons:
        apt: {packages: [cabal-install-1.22, ghc-7.10.3], sources: [hvr-ghc]}
    - env: CABALVER=1.24 GHCVER=8.0.1
      addons:
        apt: {packages: [cabal-install-1.24, ghc-8.0.1],  sources: [hvr-ghc]}
    - env: CABALVER=head GHCVER=head
      addons:
        apt: {packages: [cabal-install-head, ghc-head],   sources: [hvr-ghc]}

  allow_failures:
    - env: CABALVER=head GHCVER=head

before_install:
  - export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:$PATH

install:
  - cabal --version
  - echo "$(ghc --version) [$(ghc --print-project-git-commit-id 2> /dev/null || echo '?')]"
  - travis_retry cabal update
  - cabal install --only-dependencies --enable-tests --enable-benchmarks

script:
  # Option -fpedantic turns on additional wornings in addition to -Wall.
  - cabal configure -fpedantic
  - cabal build
  - cabal test

  # Following line tests if sdist package is created correctly.
  - cabal sdist | sed -rn '$s/^[^:]+:\s+//p' | xargs cabal install