feature request: allow os selection for ocaml version tests #430
Description
Packages are tested against an array of ocaml values, and an array of OSes.
The tests against the different versions of OCaml are done under debian. This is fine most of the time, but there are packages which don't build on debian. E.g., any package which has a x-ci-accept-failure with debian inside. E.g., or any package that depends on one of those package.
For these packages, it'd be better to run the tests for the ocaml versions on a different OS. This could be indicated via a x-os-for-compiler-version-array or similar field in the package.
NOTE: I think this feature is actually quite a bit of work, and possibly not useful for that many packages. So possibly not very high prority. I'm not entirely sure because I'm not familiar enough with the internals of the projects to know.