Hello, I'm playing with the unikernels idea [1]. Specifically I'm using Mirage OS [2] to probe a minimal HTTP server running on AWS directly over Xen, without any OS between the application and the hypervisor. Mirage OS is based on OCaml. Is there any Smalltalk solution to build this kind of unikernels? The idea of Smalltalk all the way down (at least to the virtual devices of the hypervisor) is very appealing to me. Indeed I think this idea was proposed for the first time by Dan Ingalls: ''An operating system is a collection of things that don't fit into a language. There shouldn't be one.'' I have found SqueakNOS [3], but I don't know if it is active or if it works with Pharo. Thank you, Rafa [1] http://queue.acm.org/detail.cfm?id=2566628 [2] http://www.openmirage.org/ [3] http://squeaknos.blogspot.com.es/