.travis.yml

# Test against different stack LTS versions.
env:
 - PEDANTIC=--pedantic RESOLVER=lts-6.11  # Most recent GHC 7.10 LTS
 - PEDANTIC=           RESOLVER=nightly-2016-08-13 # GHC 8.0 Nightly

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

# Install Python 3.5 for use with the Python test suite and Jupyter.
python:
  - "3.5"

# Enable caching.
sudo: false

# Enable packages we need.
addons:
  apt:
    packages:
      - libgmp-dev       # GHC

# Caching so the next build will be fast too.
# These caches are the same between resolvers, but this is fine, 
# as Stack differentiates between its resolvers.
cache:
  directories:
  - $HOME/.ghc
  - $HOME/.cabal
  - $HOME/.stack

# Not all packages are available – see before_install for from-source builds. 
before_install:
    # Download and unpack the stack executable
  - export PATH=$HOME/.local/bin:$PATH
  - mkdir -p ~/.local/bin
  - curl -L https://www.stackage.org/stack/linux-x86_64 | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack'

    # Install zeromq3 -- the package is not supported yet on Travis whitelist... (06/06/2016)
  - |
    if [ ! -d "$HOME/zeromq/lib" ]; then
        export OLDPWD=$(pwd) 
        travis_retry git clone http://www.github.com/zeromq/zeromq4-x.git libzmq
        mkdir $HOME/zeromq
        cd libzmq
        travis_retry ./autogen.sh
        travis_retry ./configure --prefix=$HOME/zeromq
        make
        travis_retry make install
        cd $OLDPWD
    fi

    # Install nbconvert for testing the notebook
  - pip install jupyter ipykernel notebook jupyter_client

# This step takes the longest, and is what generates the Stack cache. 
install:
  # Set path for pkg-config to find zeromq, otherwise install of zeromq4-haskell fails.
  - export PKG_CONFIG_PATH=$HOME/zeromq/lib/pkgconfig/
  - stack --resolver=$RESOLVER setup
  - stack --resolver=$RESOLVER build --dependencies-only

script:
  - export LD_LIBRARY_PATH=$HOME/zeromq/lib
  - stack --resolver=$RESOLVER build
  - stack --resolver=$RESOLVER exec kernel-basic install
  - stack --resolver=$RESOLVER exec kernel-stdin install
  - stack --resolver=$RESOLVER exec kernel-calculator install
  - stack --resolver=$RESOLVER exec python python/tests.py
  - stack --resolver=$RESOLVER test $PEDANTIC
  - stack --resolver=$RESOLVER clean
  - stack --resolver=$RESOLVER haddock &>haddock.out
  - python python/ensure_haddock_coverage.py haddock.out