.travis.yml

language: c

# explicitly request container-based infrastructure
sudo: false

matrix:
  include:
    - 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=8.0.2
      addons: {apt: {packages: [cabal-install-1.24,ghc-8.0.2],sources: [hvr-ghc]}}
    - env: CABALVER=2.0 GHCVER=8.2.2
      addons: {apt: {packages: [cabal-install-2.0,ghc-8.2.2],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
   - env: CABALVER=2.0 GHCVER=8.2.2

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

install:
 - travis_retry cabal update
 - cabal install --only-dependencies --enable-tests --force-reinstalls

script:
 - cabal configure --enable-tests
#--enable-library-coverage || cabal configure --enable-tests --enable-coverage
 - cabal build
 - cabal test