.travis.yml

---
language: haskell

git:
  depth: 5

cache:
  directories:
    - "$HOME/.cabal/store"
    - "$HOME/.stack"
    - "$TRAVIS_BUILD_DIR/.stack-work"

matrix:
  include:

    # Cabal
    - ghc: 9.0.1
      cabal: 3.4
    - ghc: 8.10.4
      cabal: 3.2
    - ghc: 8.6.5
      cabal: 2.4
    - ghc: 8.0.2
      cabal: 2.4
    - ghc: 7.10.3
      cabal: 2.4

    # Stack
    # Stack version in .yaml-file
    - ghc: 8.10.4
      env: STACK_YAML="$TRAVIS_BUILD_DIR/stack-8.10.4.yaml"
    - ghc: 8.8.4
      env: STACK_YAML="$TRAVIS_BUILD_DIR/stack-8.8.4.yaml"
    - ghc: 8.6.5
      env: STACK_YAML="$TRAVIS_BUILD_DIR/stack-8.6.5.yaml"
    # - ghc: 8.4.4
    #   env: STACK_YAML="$TRAVIS_BUILD_DIR/stack-8.4.4.yaml"
    - ghc: 8.4.3
      env: STACK_YAML="$TRAVIS_BUILD_DIR/stack.yaml"

install:
  - |
    if [ -z "$STACK_YAML" ]; then
      ghc --version
      cabal --version
      cabal new-update
      cabal new-build --enable-tests --enable-benchmarks
    else
      # install stack
      curl -sSL https://get.haskellstack.org/ | sh

      # build project with stack
      stack --version
      stack build --system-ghc --test --bench --no-run-tests --no-run-benchmarks
    fi

script:
  - |
    if [ -z "$STACK_YAML" ]; then
      cabal new-test --enable-tests
      cabal new-sdist
    else
      stack test --system-ghc
    fi

notifications:
  email: false