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nixpkgs/nixos/modules/installer/cd-dvd/system-tarball-pc.nix

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Nix

# This module contains the basic configuration for building a NixOS
# tarball, that can directly boot, maybe using PXE or unpacking on a fs.
{ config, lib, pkgs, ... }:
with lib;
let
pkgs2storeContents = l : map (x: { object = x; symlink = "none"; }) l;
# For PXE kernel loading
pxeconfig = pkgs.writeText "pxeconfig-default" ''
default menu.c32
prompt 0
label bootlocal
menu default
localboot 0
timeout 80
TOTALTIMEOUT 9000
label nixos
MENU LABEL ^NixOS using nfsroot
KERNEL bzImage
append ip=dhcp nfsroot=/home/pcroot systemConfig=${config.system.build.toplevel} init=${config.system.build.toplevel}/init rw
# I don't know how to make this boot with nfsroot (using the initrd)
label nixos_initrd
MENU LABEL NixOS booting the poor ^initrd.
KERNEL bzImage
append initrd=initrd ip=dhcp nfsroot=/home/pcroot systemConfig=${config.system.build.toplevel} init=${config.system.build.toplevel}/init rw
label memtest
MENU LABEL ^${pkgs.memtest86.name}
KERNEL memtest
'';
dhcpdExampleConfig = pkgs.writeText "dhcpd.conf-example" ''
# Example configuration for booting PXE.
allow booting;
allow bootp;
# Adapt this to your network configuration.
option domain-name "local";
option subnet-mask 255.255.255.0;
option broadcast-address 192.168.1.255;
option domain-name-servers 192.168.1.1;
option routers 192.168.1.1;
# PXE-specific configuration directives...
# Some BIOS don't accept slashes for paths inside the tftp servers,
# and will report Access Violation if they see slashes.
filename "pxelinux.0";
# For the TFTP and NFS root server. Set the IP of your server.
next-server 192.168.1.34;
subnet 192.168.1.0 netmask 255.255.255.0 {
range 192.168.1.50 192.168.1.55;
}
'';
readme = ./system-tarball-pc-readme.txt;
in
{
imports =
[ ./system-tarball.nix
# Profiles of this basic installation.
../../profiles/all-hardware.nix
../../profiles/base.nix
../../profiles/installation-device.nix
];
# To speed up further installation of packages, include the complete stdenv
# in the Nix store of the tarball.
tarball.storeContents = pkgs2storeContents [ pkgs.stdenv ];
tarball.contents =
[ { source = config.boot.kernelPackages.kernel + "/" + config.system.boot.loader.kernelFile;
target = "/boot/" + config.system.boot.loader.kernelFile;
}
{ source = "${pkgs.syslinux}/share/syslinux/pxelinux.0";
target = "/boot/pxelinux.0";
}
{ source = "${pkgs.syslinux}/share/syslinux/menu.c32";
target = "/boot/menu.c32";
}
{ source = pxeconfig;
target = "/boot/pxelinux.cfg/default";
}
{ source = readme;
target = "/readme.txt";
}
{ source = dhcpdExampleConfig;
target = "/boot/dhcpd.conf-example";
}
{ source = "${pkgs.memtest86}/memtest.bin";
# We can't leave '.bin', because pxelinux interprets this specially,
# and it would not load the image fine.
# http://forum.canardpc.com/threads/46464-0104-when-launched-via-pxe
target = "/boot/memtest";
}
];
# Allow sshd to be started manually through "start sshd". It should
# not be started by default on the installation CD because the
# default root password is empty.
services.openssh.enable = true;
systemd.services.openssh.wantedBy = lib.mkOverride 50 [];
# To be able to use the systemTarball to catch troubles.
boot.crashDump = {
enable = true;
kernelPackages = pkgs.linuxPackages_3_4;
};
# No grub for the tarball.
boot.loader.grub.enable = false;
/* fake entry, just to have a happy stage-1. Users
may boot without having stage-1 though */
fileSystems.fake =
{ mountPoint = "/";
device = "/dev/something";
};
nixpkgs.config = {
packageOverrides = p: {
linux_3_4 = p.linux_3_4.override {
extraConfig = ''
# Enable drivers in kernel for most NICs.
E1000 y
# E1000E y
# ATH5K y
8139TOO y
NE2K_PCI y
ATL1 y
ATL1E y
ATL1C y
VORTEX y
VIA_RHINE y
R8169 y
# Enable nfs root boot
UNIX y # http://www.linux-mips.org/archives/linux-mips/2006-11/msg00113.html
IP_PNP y
IP_PNP_DHCP y
FSCACHE y
NFS_FS y
NFS_FSCACHE y
ROOT_NFS y
# Enable devtmpfs
DEVTMPFS y
DEVTMPFS_MOUNT y
'';
};
};
};
}