GitHub Actions

[liyishuai]

Replacing Travis CI, which is no longer free.
The current workflow has lots of jobs. Maybe worth trimming down a few.
Tests failed on Windows.

[mjambon]

Given the nature of the project, I'd err on the side of caution and test as many ocaml versions (major.minor.) as possible unless there's a major cost to doing that.

[mjambon]

I have no idea about the Windows setup. It sounds like a great thing to have in theory. I just don't have the experience running anything on Windows.

[liyishuai]

I wondered if the Windows error was caused by Git's CRLF configuration, so I set autocrlf to false. Now Windows build fails at setting up OCaml:

Retrieve the Cygwin cache
Error: connect ECONNREFUSED 8.43.85.97:443

@avsm any instructions?

[pmetzger]

BTW, @liyishuai, we probably need to do this for everything in ocaml-community, so if you are familiar with the needed steps, the help would be most welcome.

[liyishuai]

BTW, @liyishuai, we probably need to do this for everything in ocaml-community, so if you are familiar with the needed steps, the help would be most welcome.

The current script is quite generic up to installing the dependencies. Other projects can copy these lines and add their own build/test/deploy afterwards.

See also ocaml/setup-ocaml#117

[liyishuai]

Update: the script now tests packages that depend on cppo.

[liyishuai]

Ready to merge. A few issues to address later:

• Install dependants' external dependencies, to reduce false "broken dependency".
• Unskip dependant tests for some packages, OCaml 4.02.x, and Windows.

[pmetzger]

@liyishuai I think you should feel free to merge once you feel you're ready. And again, if you wanted to do the same (very generic) thing for other projects in ocaml-community, we would all be grateful.

[liyishuai]

Yes I'll propagate the self-test part to other projects.
The dependant test script needs better polishing (maybe whitelist rather than blacklist).