.travis.yml

# 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:
  - ARGS="--stack-yaml=stack-lts-2.yaml"
  - ARGS="--stack-yaml=stack-lts-3.yaml"
  - ARGS="--resolver=lts-4"
  - ARGS="--resolver=lts-5"
  - ARGS="--resolver=lts-6"


before_install:
# Download and unpack the stack executable
  - 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'

# 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 $ARGS setup
  - stack $ARGS test --no-terminal --haddock --no-haddock-deps
  - stack $ARGS bench
  - stack $ARGS build
  - for f in examples/*.hs; do stack $ARGS ghc -- -Wall -Werror $f -o /dev/null; done
# TODO: re-enable sdist when lcs is released and sets an upper bound on base
#  - stack $ARGS sdist


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