Open hongchangwu opened 5 years ago
Caching doesn't work, as the dependencies are always removed: https://github.com/ocaml/ocaml-ci-scripts/blob/c812b816699dbb5764e97c7235ce98dc8f1b6c1a/.travis-opam.sh#L31
What about for .travis-ocaml.sh
? I'm not building an opam package. I was thinking about setting up a local opam switch, instead of a global one using the provided scripts here, and then cacheing _opam
in the build-dir … but @hongchangwu mentions that other people have come up with other solutions?
I've been doing something like that. I didn't need to create a switch, just using the environment coming straight out of .travis-ocaml.sh
, and handwriting the bare essential commands that would be performed afterwards by .travis-opam.sh
. It's a bit less robust than what .travis-opam.sh
does but it works 99% of the time and if something goes wrong the simplicity makes it easy to debug (in contrast, I have no idea of the right way to fix .travis-opam.sh
to support caching).
Example .travis.yaml
: https://github.com/DeepSpec/InteractionTrees/blob/f12aa7ce787ee0726433d48876b2ca0987d60b03/.travis.yml#L29-L43
If you're not building an opam package you can replace the last few lines with your own build commands.
The default configuration takes too long without caches. People have come with different caching configurations in practice. It will be good to document this.