[themckman]

For those interested, some of the underlying libraries that make up Docker for Mac (and, I think, Windows) are written in OCaml (or have components written in OCaml): VPNKit[0], DataKit[1] and HyperKit[2] (qcow2 support is implemented in OCaml).

0: https://github.com/moby/vpnkit

1: https://github.com/moby/datakit

2: https://github.com/moby/hyperkit

[pjmlp]

They are taken from MirageOS.

https://blog.docker.com/2016/05/docker-unikernels-open-sourc...

[dfee]

To be fair, GitHub attributes 1.5% of hyperkit’s code to ocaml

[djs55]

The 1.5% that's in the hyperkit repo is the shim to the Mirage block layer. The qcow2 implementation that's normally linked in is from https://github.com/mirage/ocaml-qcow .