.travis.yml

notifications:
  email: false

# Use new container infrastructure to enable caching
sudo: false

# Choose a lightweight base image; we provide our own build tools.
language: c

# GHC depends on GMP. You can add other dependencies here as well.
addons:
  apt:
    packages:
    - libgmp-dev

# The different configurations we want to test. You could also do things like
# change flags or use --stack-yaml to point to a different file.
env:
  global:
    - ARGS="--no-terminal --install-ghc"
    - STACK_URL="https://www.stackage.org/stack/linux-x86_64"
  matrix:
    - YAML="./stack.yaml"               CMD="bench prometheus-client"
    - YAML="./stack.yaml"               CMD="test --haddock"
    - YAML="./.travis/stack-lts-2.yaml" CMD="test --haddock" STACK_URL="https://github.com/commercialhaskell/stack/releases/download/v1.5.1/stack-1.5.1-linux-x86_64-static.tar.gz"
    - YAML="./.travis/stack-lts-3.yaml" CMD="test --haddock" STACK_URL="https://github.com/commercialhaskell/stack/releases/download/v1.5.1/stack-1.5.1-linux-x86_64-static.tar.gz"
    - YAML="./.travis/stack-lts-12.yaml" CMD="test --haddock"
    - YAML="./.travis/stack-lts-16.yaml" CMD="test --haddock"

before_install:
# Download and unpack the stack executable
- mkdir -p ~/.local/bin
- export PATH=$HOME/.local/bin:$PATH
- travis_retry curl -L $STACK_URL | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack'

# This line does all of the work: installs GHC if necessary, build the library,
# executables, and test suites, and runs the test suites. --no-terminal works
# around some quirks in Travis's terminal implementation.
script:
- stack --stack-yaml $YAML $ARGS $CMD

# Caching so the next build will be fast too.
cache:
  directories:
  - $HOME/.stack