As a current Nix user, what I would really like is a statically typed language to define builds. Recreating Nix without addressing that feels like a missed opportunity.
The problem for me is that I see no benefit on using this over nix language (which I kinda like a lot right now)
And it has Windows support, of course. It can also be used to build your own distribution (e.g. here is one for a bunch of Rust utilities: https://github.com/wolfv/rust-forge)
Is this Ericsson... the corporation? Windows support for nix is something I don't hear much about, but if there is progress being made (even slowly) I'd love to know more.
You can read a post on that here: https://lastlog.de/blog/libnix_roadmap.html