travis-ci.md

• https://blog.travis-ci.com/2017-09-12-build-stages-order-and-conditions
• https://docs.travis-ci.com/user/build-stages/matrix-expansion/
• ⚠️ https://fnordahl.com/2017/04/08/continuous-deployment-testing-of-github-hosted-code/
  • https://github.com/fnordahl/travis-lxd
  • https://github.com/juju-solutions/charm-mysql/blob/master/.travis.yml

---

• Add "[ci skip]" to a commit message, and Travis will automatically skip that build

Two different ways to distinguish a tag from regular push

language: python
dist: xenial
python:
  - "3.4"
  - "3.5"
  - "3.6"
  - "3.7"
script: python -V

matrix:
  fast_finish: true
  include:
    - python: "3.7"
      if: tag IS present
      env: ['TAG_IS_PRESENT'] 
      script: echo "Tag is present"

language: python
dist: xenial
python:
  - "3.4"
  - "3.5"
  - "3.6"
  - "3.7"
script: python -V

jobs:
  fast_finish: true
  include:
    - stage: deploy
      if: tag IS present
      language: python
      python: "3.7"
      install: skip
      script:
        - echo "Stage ==> deploy"