.travis.yml

# NB: don't set `language: haskell` here

sudo: false
cache:
  directories:
  - $HOME/.stack/

# Here we test both stackage builds, which offer a controlled package
# set, and "bleeding edge" builds which use the GHC resolver to grab
# the latest off hackage.
matrix:
  include:
    # Default: Use an LTS w/7.10, as embedded in stack.yaml currently:
    - env: STACK_RESOLVER=

    # Test with an older GHC, 7.8.4:
    - env: STACK_RESOLVER=lts-2.22
           STACK_YAML=stack-lts-2.22.yaml

    # Test with GHC 8.0, not yet in LTS:
    - env: STACK_RESOLVER=nightly-2016-05-31

    # This is nondeterministic; the latest nightly:
    - env: STACK_RESOLVER=nightly

    # Try to use the very latest packages here, so that we catch
    # failures before they get to stackage:
    - env: STACK_RESOLVER=ghc-7.8
    - env: STACK_RESOLVER=ghc-7.10
    - env: STACK_RESOLVER=ghc-8.0
      
  allow_failures:
    # We should track these failures, but they don't represent a
    # change or regression in our code:
    - env: STACK_RESOLVER=ghc-7.8
    - env: STACK_RESOLVER=ghc-7.10
    - env: STACK_RESOLVER=ghc-8.0
    - env: STACK_RESOLVER=nightly

    # Not worrying about this yet, but we will:
    - env: STACK_RESOLVER=nightly-2016-05-31
      
addons:
  apt:
    packages:
      - libgmp-dev
      
# Note: the distinction between `before_install` and `install` is not important.
# This just sets up stack and paths
before_install:
 - mkdir -p ~/.local/bin
 - mkdir -p ./bin/
 - export PATH=${PWD}/bin:~/.local/bin:${PATH}
 - export STACKVER=1.1.2
 - wget https://github.com/commercialhaskell/stack/releases/download/v${STACKVER}/stack-${STACKVER}-linux-x86_64.tar.gz
 - tar xvf stack-${STACKVER}-linux-x86_64.tar.gz
 - mv -f stack-${STACKVER}-linux-x86_64/stack ~/.local/bin/
 - chmod a+x ~/.local/bin/stack

 # This sets up GHC and builds our packages:
install:
 - source .build_tests.sh 
 
# Here starts the actual work to be performed for the package under test;
# any command which exits with a non-zero exit code causes the build to fail.
script:
 - source .run_tests.sh