.travis.yml

sudo: false

language: erlang
otp_release:
  - 20.3
  - 21.1

cache:
  directories:
  - $HOME/.stack

addons:
  apt:
    packages:
      - libgmp-dev

env:
  - STACK_LTS_VERSION="nightly"  STACK_TEST_FLAGS="--pedantic"
  - STACK_LTS_VERSION="lts-11.0" STACK_TEST_FLAGS="--pedantic"
  - STACK_LTS_VERSION="lts-9.21" STACK_TEST_FLAGS="--pedantic"
  - STACK_LTS_VERSION="lts-8.23" STACK_TEST_FLAGS="--pedantic"
  - STACK_LTS_VERSION="lts-7.24" STACK_TEST_FLAGS="--pedantic --ghc-options=-Wno-redundant-constraints"
  - STACK_LTS_VERSION="lts-6.35" STACK_TEST_FLAGS="--pedantic"

before_install:
- mkdir -p ~/.local/bin
- export PATH=$HOME/.local/bin:$PATH
- travis_retry curl -L https://www.stackage.org/stack/linux-x86_64 | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack'

install:
- stack --resolver=$STACK_LTS_VERSION --no-terminal --install-ghc build --only-dependencies --pedantic

script:
- stack --resolver=$STACK_LTS_VERSION build --no-terminal --test $STACK_TEST_FLAGS
- |
  sed -n '/^```haskell$/,/^```$/p' README.md | grep -v '```' | stack --resolver=$STACK_LTS_VERSION runghc
  [[ $(erl -noshell -eval 'io:format("~p\n", [test_module:tuple_of_one()])' -s init stop) == "{1}" ]]

notifications:
  email: false

branches:
  only:
    - "master"