nixpkgs/configuration/rescue-cd-configurable.nix
Wouter den Breejen ca2b1e3b77 Added boot.kernelModules argument to rescue-cd
svn path=/nixos/trunk/; revision=10227
2008-01-19 13:47:49 +00:00

392 lines
11 KiB
Nix

/*
platform ? __currentSystem
lib
*/
args: with args;
let
arg = name: def: lib.getAttr [name] def args;
platform = arg "platform" __currentSystem;
networkNixpkgs = arg "networkNixpkgs" "";
nixpkgsMd5 = arg "nixpkgsMd5" "";
manualEnabled = arg "manualEnabled" true;
rogueEnabled = arg "rogueEnabled" true;
ttyCount = lib.fold builtins.add 0 [
(if rogueEnabled then 1 else 0)
(if manualEnabled then 1 else 0)
];
sshdEnabled = arg "sshdEnabled" false;
fontConfigEnabled = arg "fontConfigEnabled" false;
sudoEnable = arg "sudoEnable" false;
packages = arg "packages" (pkgs : []);
includeMemtest = arg "includeMemtest" true;
includeStdenv = arg "includeStdenv" true;
includeBuildDeps = arg "includeBuildDeps" false;
kernel = arg "kernel" (pkgs : pkgs.kernel);
addUsers = arg "addUsers" [];
extraInitrdKernelModules = arg "extraInitrdKernelModules" [];
bootKernelModules = arg "bootKernelModules" [];
/* Should return list of {configuration, suffix} attrsets.
{configuration=configuration; suffix=""} is always prepended.
*/
configList = arg "configList" (configuration : []);
in
let
systemPackBuilder = {suffix, configuration} : {
system = (import ../system/system.nix) {
inherit configuration platform; /* To refactor later - x86+x86_64 DVD */
stage2Init = "/init"+suffix;
};
inherit suffix configuration;
};
systemPackGrubEntry = systemPack : (''
title NixOS Installer / Rescue ${systemPack.system.config.boot.configurationName}
kernel /boot/vmlinuz${systemPack.suffix} ${toString systemPack.system.config.boot.kernelParams} systemConfig=/system${systemPack.suffix}
initrd /boot/initrd${systemPack.suffix}
'');
systemPackInstallRootList = systemPack : [
{ source = systemPack.system.kernel + "/vmlinuz";
target = "boot/vmlinuz${systemPack.suffix}";
}
{ source = systemPack.system.initialRamdisk + "/initrd";
target = "boot/initrd${systemPack.suffix}";
}
];
systemPackInstallClosures = systemPack : ([
{ object = systemPack.system.bootStage2;
symlink = "/init${systemPack.suffix}";
}
{ object = systemPack.system.system;
symlink = "/system${systemPack.suffix}";
}
]
++
(lib.optional includeStdenv
# To speed up the installation, provide the full stdenv.
{ object = systemPack.system.pkgs.stdenv;
symlink = "none";
}
)
);
systemPackInstallBuildClosure = systemPack : ([
{
object = systemPack.system.system.drvPath;
symlink = "none";
}
]);
userEntry = user : {
name = user;
description = "NixOS Live Disk non-root user";
home = "/home/${user}";
createHome = true;
group = "users";
extraGroups = ["wheel" "audio"];
shell = "/bin/sh";
};
in
rec {
nixpkgsRel = "nixpkgs" + (if networkNixpkgs != "" then "-" + networkNixpkgs else "");
configuration = {
boot = {
autoDetectRootDevice = true;
readOnlyRoot = true;
# The label used to identify the installation CD.
rootLabel = "NIXOS";
extraTTYs = [] ++ (lib.optional manualEnabled 7) ++
(lib.optional rogueEnabled 8);
inherit kernel;
initrd = {
extraKernelModules = extraInitrdKernelModules;
};
kernelModules = bootKernelModules;
};
services = {
sshd = {
enable = sshdEnabled;
};
xserver = {
enable = false;
};
extraJobs = [
# Unpack the NixOS/Nixpkgs sources to /etc/nixos.
{ name = "unpack-sources";
job = "
start on startup
script
export PATH=${pkgs.gnutar}/bin:${pkgs.bzip2}/bin:$PATH
mkdir -p /etc/nixos/nixos
tar xjf /nixos.tar.bz2 -C /etc/nixos/nixos
tar xjf /nixpkgs.tar.bz2 -C /etc/nixos
mv /etc/nixos/nixpkgs-* /etc/nixos/nixpkgs || true
ln -sfn ../nixpkgs/pkgs /etc/nixos/nixos/pkgs
chown -R root.root /etc/nixos
touch /etc/resolv.conf
end script
";
}]
++
(lib.optional manualEnabled
# Show the NixOS manual on tty7.
{ name = "manual";
job = "
start on udev
stop on shutdown
respawn ${pkgs.w3m}/bin/w3m ${manual} < /dev/tty7 > /dev/tty7 2>&1
";
})
++
(lib.optional rogueEnabled
# Allow the user to do something useful on tty8 while waiting
# for the installation to finish.
{ name = "rogue";
job = "
start on udev
stop on shutdown
respawn ${pkgs.rogue}/bin/rogue < /dev/tty8 > /dev/tty8 2>&1
";
})
++
(lib.optional (addUsers != [])
# Set empty passwords
{
name = "clear-passwords";
job = ''
start on startup
script
for i in ${lib.concatStringsSep " " addUsers}; do
echo | ${pkgs.pwdutils}/bin/passwd --stdin $i
done
end script
'';
})
;
# And a background to go with that.
ttyBackgrounds = {
specificThemes = []
++
(lib.optional manualEnabled
{ tty = 7;
# Theme is GPL according to http://kde-look.org/content/show.php/Green?content=58501.
theme = pkgs.fetchurl {
url = http://www.kde-look.org/CONTENT/content-files/58501-green.tar.gz;
sha256 = "0sdykpziij1f3w4braq8r8nqg4lnsd7i7gi1k5d7c31m2q3b9a7r";
};
})
++
(lib.optional rogueEnabled
{ tty = 8;
theme = pkgs.fetchurl {
url = http://www.bootsplash.de/files/themes/Theme-GNU.tar.bz2;
md5 = "61969309d23c631e57b0a311102ef034";
};
})
;
};
mingetty = {
helpLine = ''
Log in as "root" with an empty password.
''
+(if addUsers != [] then '' These users also have empty passwords:
${lib.concatStringsSep " " addUsers }
'' else "")
+(if manualEnabled then " Press <Alt-F7> for help." else "");
};
};
fonts = {
enableFontConfig = fontConfigEnabled;
};
installer = {
nixpkgsURL =
(if networkNixpkgs != "" then http://nix.cs.uu.nl/dist/nix/ + nixpkgsRel
else file:///mnt/ );
};
security = {
sudo = {
enable = sudoEnable;
};
};
environment = {
extraPackages = pkgs: [
pkgs.vim
pkgs.subversion # for nixos-checkout
pkgs.w3m # needed for the manual anyway
] ++ (packages pkgs);
checkConfigurationOptions = true;
};
users = {
extraUsers = map userEntry addUsers;
};
};
configurations = [{
inherit configuration;
suffix = "";
}] ++ (configList configuration);
systemPacks = map systemPackBuilder configurations;
system = (builtins.head systemPacks).system; /* I hope this is unneeded */
pkgs = system.pkgs; /* Nothing non-fixed should be built from it */
# The NixOS manual, with a backward compatibility hack for Nix <=
# 0.11 (you won't get the manual).
manual =
if builtins ? unsafeDiscardStringContext
then "${import ../doc/manual}/manual.html"
else pkgs.writeText "dummy-manual" "Manual not included in this build!";
# Since the CD is read-only, the mount points must be on disk.
cdMountPoints = pkgs.runCommand "mount-points" {} "
ensureDir $out
cd $out
mkdir proc sys tmp etc dev var mnt nix nix/var root bin ${if addUsers != "" then "home" else ""}
touch $out/${configuration.boot.rootLabel}
";
# We need a copy of the Nix expressions for Nixpkgs and NixOS on the
# CD. We put them in a tarball because accessing that many small
# files from a slow device like a CD-ROM takes too long.
makeTarball = tarName: input: pkgs.runCommand "tarball" {inherit tarName;} "
ensureDir $out
(cd ${input} && tar cvfj $out/${tarName} . \\
--exclude '*~' \\
--exclude 'pkgs' --exclude 'result')
";
makeNixPkgsTarball = tarName: input: ((pkgs.runCommand "tarball-nixpkgs" {inherit tarName;} "
ensureDir $out
(cd ${input}/.. && tar cvfj $out/${tarName} nixpkgs \\
--exclude '*~' \\
--exclude 'result')
")+"/${tarName}");
# Put the current directory in a tarball (making sure to filter
# out crap like the .svn directories).
nixosTarball =
let filter = name: type:
let base = baseNameOf (toString name);
in base != ".svn" && base != "result";
in
makeTarball "nixos.tar.bz2" (builtins.filterSource filter ./..);
# Get a recent copy of Nixpkgs.
nixpkgsTarball = if networkNixpkgs != "" then pkgs.fetchurl {
url = configuration.installer.nixpkgsURL + "/" + nixpkgsRel + ".tar.bz2";
md5 = "6a793b877e2a4fa79827515902e1dfd8";
} else makeNixPkgsTarball "nixpkgs.tar.bz2" "/etc/nixos/nixpkgs";
# The configuration file for Grub.
grubCfg = pkgs.writeText "menu.lst" (''
default 0
timeout 10
splashimage /boot/background.xpm.gz
''+
(lib.concatStrings (map systemPackGrubEntry systemPacks))
+ (if includeMemtest then
''
title Memtest86+
kernel /boot/memtest.bin
'' else ""));
# Create an ISO image containing the Grub boot loader, the kernel,
# the initrd produced above, and the closure of the stage 2 init.
rescueCD = import ../helpers/make-iso9660-image.nix {
inherit (pkgs) stdenv perl cdrkit;
isoName = "nixos-${platform}.iso";
# Single files to be copied to fixed locations on the CD.
contents = lib.uniqList {inputList =
[
{ source = "${pkgs.grub}/lib/grub/i386-pc/stage2_eltorito";
target = "boot/grub/stage2_eltorito";
}
{ source = grubCfg;
target = "boot/grub/menu.lst";
}]
++
(lib.concatLists (map systemPackInstallRootList systemPacks))
++
[{ source = system.config.boot.grubSplashImage;
target = "boot/background.xpm.gz";
}
{ source = cdMountPoints;
target = "/";
}
{ source = nixosTarball + "/" + nixosTarball.tarName;
target = "/" + nixosTarball.tarName;
}
{ source = nixpkgsTarball;
target = "/nixpkgs.tar.bz2";
}
]
++
(lib.optional includeMemtest
{ source = pkgs.memtest86 + "/memtest.bin";
target = "boot/memtest.bin";
}
)
;};
# Closures to be copied to the Nix store on the CD.
storeContents = lib.uniqListExt {
inputList= lib.concatLists
(map systemPackInstallClosures systemPacks);
getter = x : x.object.drvPath;
compare = lib.eqStrings;
};
buildStoreContents = lib.uniqList {inputList=([]
++
(if includeBuildDeps then lib.concatLists
(map systemPackInstallBuildClosure systemPacks)
else [])
);};
bootable = true;
bootImage = "boot/grub/stage2_eltorito";
};
}