Continuous Integration is hard to set up for repositories in the Wikimedia environment. Often this will require changes to the integration/config repo (e.g. editing a huge YAML file) and whitelisting of users (who may otherwise be unable to trigger some Jenkins jobs via Gerrit).
Travis CI et similia only require a simple YAML file in the root directory of each code repository. Supporting such model can greatly streamline the addition of CI to repositories managed by small volunteer teams, decrease reliance on third-party services and ease the work of the few employees dedicated to CI infrastructure.
I discussed this on #wikimedia-releng and @mmodell thought it was a nice idea, he is the one who came up with the name for the file. But this will help us customize it per repo without needing to create a separate job.
<twentyafterfour> paladox: it would be cool to do something similar to travis, with a test config file, indeed.
What we will do is have a major improvement over .travis-ci which will allow us to define multiple tests at the same time instead of being limited to 1.
An example on how it will look
project: - name: hi - php: - 7 - 5.6 - 5.5 - 5.4 - 5.3 - hhvm script: - composer test
This is a mock and will need improvements to support extending our tests without making it complex.