Multiple packages

[Chris00]

As it is becoming increasingly the case that related packages share the same development repository, could you explain how these can be tested together with these scripts?

[samoht]

You can see an example here: https://github.com/mirage/irmin/blob/master/.travis.yml#L8 Basically just pin all the local packages to the local repo.

Note: if you are using https://github.com/yomimono/autoci, this will be set automatically for you.

[dra27]

I've tried this as a trick in ocaml-ppx/ocaml-migrate-parsetree#61. In this ocaml-migrate-parsetree is the main package and ocaml-migrate-parsetree-ocamlbuild is a package depends on it. So having set PINS=ocaml-migrate-parsetree:. and PACAKGE=ocaml-migrate-parsetree-ocamlbuild the CI tests will effectively test both packages. Except that ocaml-migrate-parsetree will get less testing than ocaml-migrate-parsetree-ocamlbuild.

Could we consider having a PACKAGES key which tries to test several in turn - automatically keeping the pin from the previous ones?

[samoht]

Having a PACKAGES variables seems like a good idea. We could also try to use opam2 opam pin . to pin all the packages locally.

[avsm]

Using opam pin . seems to be the best solution, as that will also pull in any pin-depends in the repository.