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nixpkgs/modules/installer/cd-dvd/system-tarball.nix
Peter Simons 20b364f4de Reverting revisions 30103-30106: "always set nixpkgs.config.{state,store}Dir", etc.
After the change from revision 30103, nixos-rebuild suddenly consumed
freaky amounts of memory. I had to abort the process after it had
allocated well in excess of 30GB(!) of RAM. I'm not sure what is causing
this behavior, but undoing that assignment fixes the problem. The other
two commits needed to be revoked, too, because they depend on 30103.

svn path=/nixos/trunk/; revision=30127
2011-10-30 15:19:58 +00:00

93 lines
2.5 KiB
Nix

# This module creates a bootable ISO image containing the given NixOS
# configuration. The derivation for the ISO image will be placed in
# config.system.build.tarball.
{ config, pkgs, ... }:
with pkgs.lib;
let
options = {
tarball.contents = mkOption {
example =
[ { source = pkgs.memtest86 + "/memtest.bin";
target = "boot/memtest.bin";
}
];
description = ''
This option lists files to be copied to fixed locations in the
generated ISO image.
'';
};
tarball.storeContents = mkOption {
example = [pkgs.stdenv];
description = ''
This option lists additional derivations to be included in the
Nix store in the generated ISO image.
'';
};
};
versionFile = pkgs.writeText "nixos-version" config.system.nixosVersion;
in
{
require = options;
# In stage 1 of the boot, mount the CD/DVD as the root FS by label
# so that we don't need to know its device.
fileSystems = [ ];
# boot.initrd.availableKernelModules = [ "mvsdio" "mmc_block" "reiserfs" "ext3" "ext4" ];
# boot.initrd.kernelModules = [ "rtc_mv" ];
# Closures to be copied to the Nix store on the CD, namely the init
# script and the top-level system configuration directory.
tarball.storeContents =
[ { object = config.system.build.toplevel;
symlink = "/var/run/current-system";
}
];
# Individual files to be included on the CD, outside of the Nix
# store on the CD.
tarball.contents =
[ { source = config.system.build.initialRamdisk + "/initrd";
target = "/boot/initrd";
}
{ source = versionFile;
target = "/nixos-version.txt";
}
];
# Create the tarball
system.build.tarball = import ../../../lib/make-system-tarball.nix {
inherit (pkgs) stdenv perl xz pathsFromGraph;
inherit (config.tarball) contents storeContents;
};
# Otherwise it will collide with the 'ip=dhcp' kernel autoconfig.
networking.useDHCP = false;
boot.postBootCommands =
''
# After booting, register the contents of the Nix store on the
# CD in the Nix database in the tmpfs.
if [ -f /nix-path-registration ]; then
${config.environment.nix}/bin/nix-store --load-db < /nix-path-registration &&
rm /nix-path-registration
fi
# nixos-rebuild also requires a "system" profile and an
# /etc/NIXOS tag.
touch /etc/NIXOS
${config.environment.nix}/bin/nix-env -p /nix/var/nix/profiles/system --set /var/run/current-system
'';
}