language: haskell
before_install:
env:
 - GHCVER=7.4.2 CABALVER=1.18 HAPPYVER=1.19.4 ALEXVER=3.1.3
 - GHCVER=7.6.3 CABALVER=1.18 HAPPYVER=1.19.4 ALEXVER=3.1.3
 - GHCVER=7.8.4 CABALVER=1.22 HAPPYVER=1.19.4 ALEXVER=3.1.3
 - GHCVER=7.10.1 CABALVER=1.22 HAPPYVER=1.19.4 ALEXVER=3.1.3
 - GHCVER=head  CABALVER=head HAPPYVER=1.19.4 ALEXVER=3.1.3

matrix:
  allow_failures:
   - env: GHCVER=7.10.1 CABALVER=1.22 HAPPYVER=1.19.4 ALEXVER=3.1.3
   - env: GHCVER=head  CABALVER=head HAPPYVER=1.19.4 ALEXVER=3.1.3

before_install:
 - travis_retry sudo add-apt-repository -y ppa:hvr/ghc
 - travis_retry sudo apt-get update
 - travis_retry sudo apt-get install cabal-install-$CABALVER ghc-$GHCVER happy-$HAPPYVER alex-$ALEXVER
 - export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:/opt/happy/$HAPPYVER/bin:/opt/alex/$ALEXVER/bin:$HOME/.cabal/bin:$PATH
 - cabal --version

install:
 - travis_retry cabal update
 - travis_retry git clone https://github.com/seereason/haskell-src-meta
 - cabal install -j2 ./haskell-src-meta
 - cabal install --only-dependencies --enable-tests --constraint="Cabal==$CABALVER.*"

script:
 - cabal configure --enable-tests
 - cabal build
 - cabal test