compare environment and system packages as well
investigate differences in build, install, and uri when opam file differed
Co-authored-by: Robur <team@robur.coop>
Reviewed-on: https://git.robur.io/robur/builder-web/pulls/48
Co-Authored-By: hannes <hannes@mehnert.org>
Co-Committed-By: hannes <hannes@mehnert.org>