* make-initrd.nix: builds a initial RAM disk. The resulting initrd
will contain just a Nix store containing the specified lists of
packages, with a symlink `/init' to the actual init program in the
Nix store.
* make-iso9660-image.nix: builds a bootable ISO image.
* rescue-system.nix: builds a bootable ISO image (using the two
function above) that boots into a very minimal Linux environment
containing (at the moment) the dietlibc-based bash and coreutils,
loaded from the initrd. Eventually this should become a two-stage
boot (load kernel modules from the initrd, mount the actual root
file system (e.g., the installation CD), call the real init).
The rescue system (probably a misnomer) should become the minimal
environment necessary for the installer (on CD) and the boot process
of an installed NixOS (on HD).
svn path=/nixu/trunk/; revision=6926
