.travis.yml

language: nix

# Do not build other branches than these, pull requests get built anyway, and in
# the end it is only the result of the testing branch that matters. In theory
# the commits that get pushed to master should have been built in testing
# already, but sometimes I still push manually, and of course the evergreen
# build status badge needs to come from somewhere.
branches:
  only:
  - master
  - testing

# Do not spam me with build status emails.
notifications:
  email: false

cache:
  directories:
  - $HOME/.stack
  - $TRAVIS_BUILD_DIR/.stack-work

before_install:
  # Bring all the tools from the pinned build environment into the PATH.
  - export PATH=$(nix-build --no-out-link default.nix)/bin:$PATH

  # Binaries in the profile built above may need locales, that they can't find
  # unless we point LOCALE_ARCHIVE at the archive that contains them.
  - export LOCALE_ARCHIVE=$(nix-build --no-out-link locale.nix)/lib/locale/locale-archive

install:
  # Set up the Haskell toolchain.
  - stack setup

script:
  - stack --no-terminal build --split-objs
  - stack --no-terminal test --split-objs

  # Match the licenses of dependencies agains a whitelist,
  # and fail if anything is not whitelisted. Grep -v returns
  # 1 if nothing matches, so we invert it with a ! prefix.
  # The "unexceptionalio" library is tagged as "license other"
  # on Hackage, but the license appears to be ISC, so whitelist
  # it too. See also [1].
  # [1]: https://hackage.haskell.org/package/unexceptionalio-0.3.0/src/COPYING.
  - "! stack ls dependencies --license | egrep -v 'Apache-2|BSD2|BSD3|MIT|PublicDomain|MPL-2.0|unexceptionalio'"

  # Check shell scripts for issues.
  - shellcheck package/*.sh package/deb-postinst