nixpkgs/system/system.nix
Eelco Dolstra 774a0a397c * Allow the root device to be specified by label.
svn path=/nixos/trunk/; revision=7612
2007-01-10 14:07:10 +00:00

270 lines
7.3 KiB
Nix

{ platform ? __currentSystem
, stage2Init ? ""
, configuration
}:
rec {
# Make a configuration object from which we can retrieve option
# values.
config = import ./config.nix pkgs configuration;
pkgs = import ../pkgs/top-level/all-packages.nix {system = platform;};
pkgsDiet = import ../pkgs/top-level/all-packages.nix {
system = platform;
bootStdenv = pkgs.useDietLibC pkgs.stdenv;
};
pkgsStatic = import ../pkgs/top-level/all-packages.nix {
system = platform;
bootStdenv = pkgs.makeStaticBinaries pkgs.stdenv;
};
stdenvLinuxStuff = import ../pkgs/stdenv/linux {
system = pkgs.stdenv.system;
allPackages = import ../pkgs/top-level/all-packages.nix;
};
nix = pkgs.nixUnstable; # we need the exportReferencesGraph feature
rootModules =
(config.get ["boot" "initrd" "extraKernelModules"]) ++
(config.get ["boot" "initrd" "kernelModules"]);
# Determine the set of modules that we need to mount the root FS.
modulesClosure = import ../helpers/modules-closure.nix {
inherit (pkgs) stdenv kernel module_init_tools;
inherit rootModules;
};
# Some additional utilities needed in stage 1, notably mount. We
# don't want to bring in all of util-linux, so we just copy what we
# need.
extraUtils = pkgs.runCommand "extra-utils"
{ buildInputs = [pkgs.nukeReferences];
inherit (pkgsStatic) utillinux;
inherit (pkgsDiet) udev;
inherit (pkgs) splashutils;
e2fsprogs = pkgs.e2fsprogsDiet;
allowedReferences = []; # prevent accidents like glibc being included in the initrd
}
"
ensureDir $out/bin
cp $utillinux/bin/mount $utillinux/bin/umount $utillinux/sbin/pivot_root $out/bin
cp -p $e2fsprogs/sbin/fsck* $e2fsprogs/sbin/e2fsck $out/bin
cp $splashutils/bin/splash_helper $out/bin
cp $udev/sbin/udevd $udev/sbin/udevtrigger $udev/sbin/udevsettle $out/bin
nuke-refs $out/bin/*
";
# The init script of boot stage 1 (loading kernel modules for
# mounting the root FS).
bootStage1 = import ../boot/boot-stage-1.nix {
inherit (pkgs) substituteAll;
inherit (pkgsDiet) module_init_tools;
inherit extraUtils;
autoDetectRootDevice = config.get ["boot" "autoDetectRootDevice"];
rootDevice =
let rootFS =
(pkgs.library.findSingle (fs: fs.mountPoint == "/")
(abort "No root mount point declared.")
(config.get ["fileSystems"]));
in if rootFS ? device then rootFS.device else "LABEL=" + rootFS.label;
rootLabel = config.get ["boot" "rootLabel"];
inherit stage2Init;
modulesDir = modulesClosure;
modules = rootModules;
staticShell = stdenvLinuxStuff.bootstrapTools.bash;
staticTools = stdenvLinuxStuff.staticTools;
};
# The closure of the init script of boot stage 1 is what we put in
# the initial RAM disk.
initialRamdisk = import ../boot/make-initrd.nix {
inherit (pkgs) stdenv cpio;
contents = [
{ object = bootStage1;
symlink = "/init";
}
{ object = extraUtils;
suffix = "/bin/splash_helper";
symlink = "/sbin/splash_helper";
}
{ object = import ../helpers/unpack-theme.nix {
inherit (pkgs) stdenv;
theme = config.get ["services" "ttyBackgrounds" "defaultTheme"];
};
symlink = "/etc/splash";
}
];
};
# The installer.
nixosInstaller = import ../installer/nixos-installer.nix {
inherit (pkgs) stdenv runCommand substituteAll;
inherit nix;
nixpkgsURL = config.get ["installer" "nixpkgsURL"];
};
# The services (Upstart) configuration for the system.
upstartJobs = import ./upstart.nix {
inherit config pkgs nix;
};
# The static parts of /etc.
etc = import ./etc.nix {
inherit pkgs upstartJobs;
};
# The wrapper setuid programs (since we can't have setuid programs
# in the Nix store).
setuidWrapper = import ../helpers/setuid {
inherit (pkgs) stdenv;
wrapperDir = "/var/setuid-wrappers";
};
# The packages you want in the boot environment.
fullPath = [
pkgs.bash
pkgs.bzip2
pkgs.coreutils
pkgs.cpio
pkgs.curl
pkgs.e2fsprogs
pkgs.findutils
pkgs.glibc # for ldd, getent
pkgs.gnugrep
pkgs.gnused
pkgs.gnutar
pkgs.grub
pkgs.gzip
pkgs.iputils
pkgs.less
pkgs.lvm2
pkgs.man
pkgs.module_init_tools
pkgs.nano
pkgs.netcat
pkgs.nettools
pkgs.ntp
pkgs.perl
pkgs.procps
pkgs.pwdutils
pkgs.rsync
pkgs.strace
pkgs.sysklogd
pkgs.udev
pkgs.upstart
pkgs.utillinux
# pkgs.vim
nix
nixosInstaller
setuidWrapper
];
# The script that activates the configuration, i.e., it sets up
# /etc, accounts, etc. It doesn't do anything that can only be done
# at boot time (such as start `init').
activateConfiguration = pkgs.substituteAll {
src = ./activate-configuration.sh;
isExecutable = true;
inherit etc;
inherit (pkgs) kernel;
readOnlyRoot = config.get ["boot" "readOnlyRoot"];
hostName = config.get ["networking" "hostName"];
wrapperDir = setuidWrapper.wrapperDir;
path = [
pkgs.coreutils pkgs.gnugrep pkgs.findutils
pkgs.glibc # needed for getent
pkgs.pwdutils
];
# We don't want to put all of `startPath' and `path' in $PATH, since
# then we get an embarrassingly long $PATH. So use the user
# environment builder to make a directory with symlinks to those
# packages.
fullPath = pkgs.buildEnv {
name = "boot-stage-2-path";
paths = fullPath;
pathsToLink = ["/bin" "/sbin" "/man" "/share"];
ignoreCollisions = true;
};
};
# The init script of boot stage 2, which is supposed to do
# everything else to bring up the system.
bootStage2 = import ../boot/boot-stage-2.nix {
inherit (pkgs) substituteAll coreutils
utillinux kernel udev upstart;
inherit activateConfiguration;
readOnlyRoot = config.get ["boot" "readOnlyRoot"];
upstartPath = [
pkgs.coreutils
pkgs.findutils
pkgs.gnugrep
pkgs.gnused
pkgs.upstart
];
};
# Script to build the Grub menu containing the current and previous
# system configurations.
grubMenuBuilder = pkgs.substituteAll {
src = ../installer/grub-menu-builder.sh;
isExecutable = true;
inherit (pkgs) bash;
path = [pkgs.coreutils pkgs.gnused pkgs.gnugrep];
};
# Putting it all together. This builds a store object containing
# symlinks to the various parts of the built configuration (the
# kernel, the Upstart services, the init scripts, etc.) as well as a
# script `switch-to-configuration' that activates the configuration
# and makes it bootable.
system = pkgs.stdenv.mkDerivation {
name = "system";
builder = ./system.sh;
switchToConfiguration = ./switch-to-configuration.sh;
inherit (pkgs) grub coreutils gnused gnugrep diffutils findutils;
grubDevice = config.get ["boot" "grubDevice"];
kernelParams =
(config.get ["boot" "kernelParams"]) ++
(config.get ["boot" "extraKernelParams"]);
inherit bootStage2;
inherit activateConfiguration;
inherit grubMenuBuilder;
inherit etc;
kernel = pkgs.kernel + "/vmlinuz";
initrd = initialRamdisk + "/initrd";
# Most of these are needed by grub-install.
path = [
pkgs.coreutils
pkgs.gnused
pkgs.gnugrep
pkgs.findutils
pkgs.diffutils
pkgs.upstart # for initctl
];
};
}