# The following enables several GHC versions to be tested; often it's enough to test only against the last release in a major GHC version. Feel free to omit lines listings versions you don't need/want testing for.
env:
 - GHCVER=7.4.2 CABALVER=1.16
 - GHCVER=7.6.3 CABALVER=1.18
 - GHCVER=head CABALVER=1.18 # see section about GHC HEAD snapshots

before_install:
 - sudo add-apt-repository -y ppa:hvr/ghc
 - sudo apt-get update
 - sudo apt-get install cabal-install-$CABALVER ghc-$GHCVER happy hlint
 - export PATH=/opt/ghc/$GHCVER/bin:$PATH

install:
 - cabal-$CABALVER update
 - cabal-$CABALVER install --only-dependencies --enable-tests --enable-benchmarks -j

script:
 - travis/script.sh
 - hlint src

matrix:
  allow_failures:
   - env: GHCVER=head CABALVER=1.18
  fast_finish: true