# https://github.com/purcell/nix-emacs-ci
# https://nixos.wiki/wiki/Nix_on_Travis
language: nix

cache:
  directories:
  - $HOME/nix.store

jobs:
  include:
    - os: linux
      dist: bionic
      env: EMACS_CI=emacs-25-1
    - os: linux
      dist: bionic
      env: EMACS_CI=emacs-25-2
    - os: linux
      dist: bionic
      env: EMACS_CI=emacs-25-3
    - os: linux
      dist: bionic
      env: EMACS_CI=emacs-26-1
    - os: linux
      dist: bionic
      env: EMACS_CI=emacs-26-2
    - os: linux
      dist: bionic
      env: EMACS_CI=emacs-26-3
    - os: linux
      dist: bionic
      env: EMACS_CI=emacs-27-1
    - os: linux
      dist: bionic
      env: EMACS_CI=emacs-snapshot

before_install:
  - sudo mkdir -p /etc/nix
  - echo "substituters = https://cache.nixos.org/ file://$HOME/nix.store" | sudo tee -a /etc/nix/nix.conf > /dev/null
  - echo 'require-sigs = false' | sudo tee -a /etc/nix/nix.conf > /dev/null

before_cache:
  - mkdir -p $HOME/nix.store
  - nix copy --to file://$HOME/nix.store -f default.nix buildInputs

before_script:
  - sudo mkdir -p /etc/nix && echo 'sandbox = true' | sudo tee /etc/nix/nix.conf

install:
  # The default "emacs" executable on the $PATH will now be the version named by $EMACS_CI
  - bash <(curl https://raw.githubusercontent.com/purcell/nix-emacs-ci/master/travis-install)
  - travis_retry eval $"curl -fsSL https://raw.githubusercontent.com/cask/cask/master/go | python ; sleep 10"
  - export PATH=$HOME/.cask/bin:$PATH
  - travis_retry eval $"cask install ; sleep 10"
script:
  - export PATH=$HOME/.cask/bin:$PATH
  - emacs --version
  - cask build

allow_failures:
  - os: linux
    dist: bionic
    env: EMACS_CI=emacs-snapshot