HALT is an operating system research project.
Can I use HALT?
It's nowhere near finished. I'm still figuring out the basics of how to boot a PC. I've never made an operating system or even a virtual machine or programming language.
Why does this repo have so many stars?
What is HALT?
What would an operating system look like if everything was immutable?
See this blog post for a conceptual overview: http://augustl.com/blog/2014/an_immutable_operating_system/
Halt is not UNIX. The goal is to create something completely new. See the blog post :)