virt-v2v[1] -- written in OCaml -- had a bunch of contributions from people who mainly work on Java for their dayjobs.  The main problem is that people are close-minded and refuse to learn anything new.  If you can filter those people out with your hiring processes, then OCaml is not difficult.<p>[1] <a href="https:&#x2F;&#x2F;github.com&#x2F;libguestfs&#x2F;libguestfs&#x2F;tree&#x2F;master&#x2F;v2v" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;libguestfs&#x2F;libguestfs&#x2F;tree&#x2F;master&#x2F;v2v</a>