nixpkgs-suyu/test/make-initrd.sh

source $stdenv/setup

set -o pipefail

# Get the paths in the closure of `packages'.  Unfortunately, the only
# way to get the closure is to call Nix, which is strictly speaking
# forbidden.  But we do it anyway.  In time, we should add a feature
# to Nix to let Nix pass closures to builders.
packagesClosure=$(/nix/bin/nix-store -qR $packages $init)

# Paths in cpio archives *must* be relative, otherwise the kernel
# won't unpack 'em.
mkdir root
cd root
cp -prd --parents $packagesClosure .

# Put the closure in a gzipped cpio archive.
ensureDir $out
ln -s $init init
find * -print0 | cpio -ov -H newc --null | gzip -9 > $out/initrd
Purifying the NixOS build stuff. * 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 2006-11-02 18:56:50 +01:00			`source $stdenv/setup`

			`set -o pipefail`

			# Get the paths in the closure of `packages'. Unfortunately, the only
			`# way to get the closure is to call Nix, which is strictly speaking`
			`# forbidden. But we do it anyway. In time, we should add a feature`
			`# to Nix to let Nix pass closures to builders.`
			`packagesClosure=$(/nix/bin/nix-store -qR $packages $init)`

			`# Paths in cpio archives must be relative, otherwise the kernel`
			`# won't unpack 'em.`
			`mkdir root`
			`cd root`
* Make device nodes in the stage 1 init (copied from ../init.sh). svn path=/nixu/trunk/; revision=6932 2006-11-03 00:58:06 +01:00			`cp -prd --parents $packagesClosure .`
Purifying the NixOS build stuff. * 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 2006-11-02 18:56:50 +01:00
			`# Put the closure in a gzipped cpio archive.`
			`ensureDir $out`
			`ln -s $init init`
			`find * -print0 \| cpio -ov -H newc --null \| gzip -9 > $out/initrd`