The purpose of opamcheck is to automate the task of checking experimental/development versions of the OCaml compilers on a bunch of OPAM packages.

To this end, we run opam in a loop, trying to install all the (available) packages one after the other.

In order to get deterministic behavior, opam is isolated from the network by a sandbox, composed of:

• a clone of opam-repository
• a special wrapper around curl that caches all download results

This new version is still under construction. Its driver is an OCaml program instead of a bunch of bash and awk scripts.