This is not a fork of the work presently done by Ron Minnich,
Paul A. Lalonde and al., and that can be found
here: NIX master repository ---
the default branch there should be nix.
The purpose of the present work is to learn both the Plan9 kernel and the NIX project by making it work also with the 9legacy distribution. My main purpose (Thierry Laronde aka. TL) is to learn and document, before, hopefully, being able to contribute more than superficially.
The initial state corresponds to the NIX proper code, isolated from all userland (it is self-contained, but a majority of the kernel files and devices provided should be removed to "reach out" at least the 9k existing ones), before modifications to fit 9front, with the sole (voluntary) divergence from the original code of removing the support for tubes (done upstream by Ron Minnich).
The Nix kernel can be compiled. Untested yet. Caveat about the multiboot stub, that Paul A. Lalonde had to adjust on the 9front flavor, but perhaps simply to fit 9front idiosynchrasies and not because of a deviation from the multiboot present spec per se.
The present Nix incarnation is: - made for objtype=amd64 - has 2M pages, and supports 1G pages.
The script used below uses $nixdir as the dir where the sources are kept. It defaults, if unset, to $home/nix. Adjust it if sources are put elsewhere.
So for example, extracting a tarball matching the current state of the git repository in your home dir:
cd # nixdir will default to $home/nix
hget http://downloads.kergis.com/nix/nix-9legacy.tgz | tar xz
Once you get the modifications served, the first step is to manipulate the namespace in order for changed files to mix with unchanged ones. The 'nix' rc script in sys/src/nix/ will take care of that:
cd nix/sys/src/nix
nix # uses nixdir (defaulting to $home/nix; adjust if needed)
The namespace is now set to allow the compilation and, furthermore, rc scripts provided for testing will now be accessible as nix/some_script.
cd $nixdir/sys/src/nix/boot
objtype=amd64
mk
cd ../k10
mk ../root/nvram
mk