.travis.yml

dist: trusty
sudo: required
language: generic

services:
  - docker

env:
  global:
  - PACKAGE_NAME="smart-print"
  matrix:
  - OCAML_VERSION="4.02" SHOULD_SUPPORT="true"
  - OCAML_VERSION="4.03" SHOULD_SUPPORT="true"
  - OCAML_VERSION="4.04" SHOULD_SUPPORT="true"
  - OCAML_VERSION="4.05" SHOULD_SUPPORT="true"
  - OCAML_VERSION="4.06" SHOULD_SUPPORT="true"
  - OCAML_VERSION="4.07" SHOULD_SUPPORT="true"
  - OCAML_VERSION="4.08" SHOULD_SUPPORT="true"
  - OCAML_VERSION="4.09" SHOULD_SUPPORT="true"
  - OCAML_VERSION="4.10" SHOULD_SUPPORT="true"

install: |
  # Prepare the Docker container
  docker pull ocaml/opam2:${OCAML_VERSION}
  docker run -d -i --init --name=CONTAINER -v ${TRAVIS_BUILD_DIR}:/home/project -w /home/project ocaml/opam2:${OCAML_VERSION}
  docker exec CONTAINER /bin/bash --login -c "
    # This bash script is double-quoted to interpolate Travis CI env vars:
    echo \"Build triggered by ${TRAVIS_EVENT_TYPE}\"
    export PS4='+ \e[33;1m(\$0 @ line \$LINENO) \$\e[0m '
    set -ex  # -e = exit on failure; -x = trace for debug
    (cd /home/opam/opam-repository && git pull)
    opam update
    opam pin add ${PACKAGE_NAME}.opam . --kind=path --no-action
    opam config list
    opam repo list
    opam pin list
    opam list
    " install
script:
- echo -e "${ANSI_YELLOW}Building...${ANSI_RESET}" && echo -en 'travis_fold:start:script\\r'
- |
  docker exec CONTAINER /bin/bash --login -c "
    export PS4='+ \e[33;1m(\$0 @ line \$LINENO) \$\e[0m '
    set -ex
    whoami
    sudo chown -R opam:opam /home/project
    export OPAMWITHTEST=true
    # Check if the package is compatible with the current environment
    if [ "${SHOULD_SUPPORT}" = "true" ] || opam install ${PACKAGE_NAME} --show-action; then
      # First, install the dependencies
      sudo apt-get update
      opam depext ${PACKAGE_NAME} -y
      opam install ${PACKAGE_NAME} --deps-only -y
      opam list
      # Then, install the package itself in verbose mode
      opam install ${PACKAGE_NAME} -v
    fi;
    " script
- docker stop CONTAINER  # optional
- echo -en 'travis_fold:end:script\\r'