# explicitly request container-based infrastructure
sudo: false

env:
 - GHCVER=7.10.3

cache:
  directories:
  - ~/.stack

addons:
  apt:
    sources:
    - hvr-ghc
    packages:
    - ghc-7.10.3
    - libgsl0-dev
    - liblapack-dev
    - libgtk-3-dev

before_install:
 - export PATH=/opt/ghc/$GHCVER/bin:$PATH
 - mkdir -p ~/.local/bin
 - export PATH=~/.local/bin:$PATH
 - travis_retry curl -L https://www.stackage.org/stack/linux-x86_64 | tar -xzO --wildcards '*/stack' > ~/.local/bin/stack
 - chmod a+x ~/.local/bin/stack

install:
  - stack setup --no-terminal
  - stack build --only-snapshot --no-terminal

script:
  - stack build --no-terminal