.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
    - libgsl0-dev
    - libcairo2-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="--flag inline-c:gsl-example"
- ARGS="--resolver lts-2" # The required cairo stuff is not present in lts-2
- ARGS="--resolver lts-3 --flag inline-c:gsl-example"
- ARGS="--resolver lts-6 --flag inline-c:gsl-example"
# gsl-ode example does not build with nightly-2016-06-15 due to cairo : Failed to load interface for ‘Gtk2HsSetup’, so for now it is not included in these tests
- ARGS="--resolver nightly"

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 --no-terminal --install-ghc test --haddock $ARGS

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