Let's try to rewrite Mini-OS/Xen using Haskell and Ajhc compiler.

Note: Mini-OS is small OS in Xen source tree.

This is a part of Metasepi project. Metasepi project is aim to rewrite a practical OS with some strong type-safe functional laungage.

This project uses a snach developing method. This means "We rewrite one C funciton with Haskell in a one step instead of rewring whole OS code".

This enables us early time dog fooding.

• ajhc 0.8.0.8
• Xen 4.1.5
• Ruby 1.9.x

Link to include directory:

$ make -C mini-os links

$ cd stub
$ ./gen-stub idl/*.h
$ cd ..

$ make -C libjhcrts

$ make -C mini-os

Write mini-os/mini-os.cfg like this:

kernel = "/path/to/mini-os"
memory = 128
name = "MINIOS"
on_crash = "destroy"

And run:

$ cd mini-os
$ xm create -c mini-os.cfg

• Explain motivation in Japanese: http://www.slideshare.net/mzpi/typesafe-os