.travis.yml

# NB: don't set `language: haskell` here

# 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:
  # - CABALVER=1.24 GHCVER=8.0.2
  # - CABALVER=1.24 GHCVER=8.2.2
  # - CABALVER=1.24 GHCVER=8.4.2
  - CABALVER=1.24 GHCVER=8.6.4
  - CABALVER=3.2  GHCVER=8.8
  - CABALVER=3.2  GHCVER=8.10
# - CABALVER=head GHCVER=head   # see section about GHC HEAD snapshots

# Note: the distinction between `before_install` and `install` is not important.
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 # see note about happy/alex
  - export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:$PATH
  - cabal --version
  - echo "$(ghc --version) [$(ghc --print-project-git-commit-id 2> /dev/null || echo '?')]"
  - travis_retry cabal update
  - git clone --depth 1 https://github.com/Copilot-Language/copilot-core
  - cd copilot-core && cabal install --only-dependencies && cabal configure && cabal build && cabal install
  - cd ..

install:
  - cabal install --only-dependencies --enable-tests --enable-benchmarks

# Here starts the actual work to be performed for the package under test; any
# command which exits with a non-zero exit code causes the build to fail.
script:
  - if [ -f configure.ac ]; then autoreconf -i; fi
  - cabal configure --enable-tests --enable-benchmarks -v2  # -v2 provides useful information for debugging
  - cabal build   # this builds all libraries and executables (including tests/benchmarks)
  - cabal test
    # - cabal check
  - cabal sdist   # tests that a source-distribution can be generated

# Check that the resulting source distribution can be built & installed.
# If there are no other `.tar.gz` files in `dist`, this can be even simpler:
# `cabal install --force-reinstalls dist/*-*.tar.gz`
  - SRC_TGZ=$(cabal info . | awk '{print $2;exit}').tar.gz &&
   (cd dist && cabal install --force-reinstalls "$SRC_TGZ")