nixpkgs/system/system.nix
Eelco Dolstra 3e8be34fcc * Set $NIX_OTHER_STORES to /var/run/nix/remote-stores to make
automatic copying of build results from remote Nix stores work
  more-or-less automatically.  All you have to do is mount the remote
  FS on a subdirectory of /var/run/nix/remote-stores, e.g.

    $ sshfs remote_machine:/ /var/run/nix/remote-stores/foo

* Set $NIXPKGS_ALL.

svn path=/nixos/trunk/; revision=12411
2008-07-23 16:06:03 +00:00

428 lines
14 KiB
Nix

{ platform ? __currentSystem
, stage2Init ? ""
, configuration
, nixpkgsPath ? ../../nixpkgs
}:
rec {
# Make a configuration object from which we can retrieve option
# values.
config = pkgs.lib.addDefaultOptionValues optionDeclarations configuration;
optionDeclarations = import ./options.nix {inherit pkgs; inherit (pkgs.lib) mkOption;};
pkgs = import "${nixpkgsPath}/pkgs/top-level/all-packages.nix" {system = platform;};
pkgsDiet = import "${nixpkgsPath}/pkgs/top-level/all-packages.nix" {
system = platform;
bootStdenv = pkgs.useDietLibC pkgs.stdenv;
};
pkgsStatic = import "${nixpkgsPath}/pkgs/top-level/all-packages.nix" {
system = platform;
bootStdenv = pkgs.makeStaticBinaries pkgs.stdenv;
};
stdenvLinuxStuff = import "${nixpkgsPath}/pkgs/stdenv/linux" {
system = pkgs.stdenv.system;
allPackages = import "${nixpkgsPath}/pkgs/top-level/all-packages.nix";
};
manifests = config.installer.manifests; # exported here because nixos-rebuild uses it
nix = config.environment.nix pkgs;
kernelPackages = config.boot.kernelPackages pkgs;
kernel = kernelPackages.kernel;
rootModules =
config.boot.initrd.extraKernelModules ++
config.boot.initrd.kernelModules;
# Tree of kernel modules. This includes the kernel, plus modules
# built outside of the kernel. We have to combine these into a
# single tree of symlinks because modprobe only supports one
# directory.
modulesTree = pkgs.aggregateModules (
[kernel]
++ pkgs.lib.optional ((config.networking.enableIntel3945ABGFirmware || config.networking.enableIntel4965AGNFirmware) && !kernel.features ? iwlwifi) kernelPackages.iwlwifi
# !!! this should be declared by the xserver Upstart job.
++ pkgs.lib.optional (config.services.xserver.enable && config.services.xserver.videoDriver == "nvidia") kernelPackages.nvidiaDrivers
++ pkgs.lib.optional config.hardware.enableGo7007 kernelPackages.wis_go7007
++ config.boot.extraModulePackages pkgs
);
# Determine the set of modules that we need to mount the root FS.
modulesClosure = pkgs.makeModulesClosure {
inherit rootModules;
kernel = modulesTree;
allowMissing = config.boot.initrd.allowMissing;
};
# 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;
e2fsprogs = pkgs.e2fsprogsDiet;
devicemapper = if config.boot.initrd.lvm then pkgs.devicemapperStatic else null;
lvm2 = if config.boot.initrd.lvm then pkgs.lvm2Static else null;
allowedReferences = []; # prevent accidents like glibc being included in the initrd
}
''
ensureDir $out/bin
if test -n "$devicemapper"; then
cp $devicemapper/sbin/dmsetup.static $out/bin/dmsetup
cp $lvm2/sbin/lvm.static $out/bin/lvm
fi
cp $utillinux/bin/mount $utillinux/bin/umount $utillinux/sbin/pivot_root $out/bin
cp -p $e2fsprogs/sbin/fsck* $e2fsprogs/sbin/e2fsck $out/bin
cp $udev/sbin/udevd $udev/sbin/udevadm $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;
inherit (config.boot) autoDetectRootDevice isLiveCD;
fileSystems =
pkgs.lib.filter
(fs: fs.mountPoint == "/" || (fs ? neededForBoot && fs.neededForBoot))
config.fileSystems;
rootLabel = config.boot.rootLabel;
inherit stage2Init;
modulesDir = modulesClosure;
modules = rootModules;
staticShell = stdenvLinuxStuff.bootstrapTools.bash;
staticTools = stdenvLinuxStuff.staticTools;
resumeDevice = config.boot.resumeDevice;
};
# The closure of the init script of boot stage 1 is what we put in
# the initial RAM disk.
initialRamdisk = pkgs.makeInitrd {
contents = [
{ object = bootStage1;
symlink = "/init";
}
] ++
pkgs.lib.optionals
(config.boot.initrd.enableSplashScreen && kernelPackages.splashutils != null)
[
{ object = pkgs.runCommand "splashutils" {allowedReferences = []; buildInputs = [pkgs.nukeReferences];} ''
ensureDir $out/bin
cp ${kernelPackages.splashutils}/${kernelPackages.splashutils.helperName} $out/bin/splash_helper
nuke-refs $out/bin/*
'';
suffix = "/bin/splash_helper";
symlink = "/${kernelPackages.splashutils.helperName}";
} # */
{ object = import ../helpers/unpack-theme.nix {
inherit (pkgs) stdenv;
theme = config.services.ttyBackgrounds.defaultTheme;
};
symlink = "/etc/splash";
}
];
};
# NixOS installation/updating tools.
nixosTools = import ../installer {
inherit pkgs config nix nixpkgsPath;
};
# NSS modules. Hacky!
nssModules =
pkgs.lib.optional config.users.ldap.enable pkgs.nss_ldap
++ pkgs.lib.optional config.services.avahi.nssmdns pkgs.nssmdns;
nssModulesPath = pkgs.lib.concatStrings (pkgs.lib.intersperse ":"
(map (mod: mod + "/lib") nssModules));
# Wrapper around modprobe to set the path to the modules.
modprobe = pkgs.substituteAll {
dir = "sbin";
src = ./modprobe;
isExecutable = true;
inherit (pkgs) module_init_tools;
inherit modulesTree;
};
# Environment variables for running Nix.
nixEnvVars =
''
export NIX_CONF_DIR=/nix/etc/nix
# Enable the copy-from-other-stores substituter, which allows builds
# to be sped up by copying build results from remote Nix stores. To
# do this, mount the remote file system on a subdirectory of
# /var/run/nix/remote-stores.
export NIX_OTHER_STORES=/var/run/nix/remote-stores/*/nix
'' + # */
(if config.nix.distributedBuilds then
''
export NIX_BUILD_HOOK=${nix}/libexec/nix/build-remote.pl
export NIX_REMOTE_SYSTEMS=/etc/nix.machines
export NIX_CURRENT_LOAD=/var/run/nix/current-load
''
else "");
# The services (Upstart) configuration for the system.
upstartJobs = import ../upstart-jobs/default.nix {
inherit config pkgs nix modprobe nssModulesPath nixEnvVars
optionDeclarations kernelPackages;
};
# The static parts of /etc.
etc = import ../etc/default.nix {
inherit config pkgs upstartJobs systemPath wrapperDir
defaultShell nixEnvVars modulesTree nssModulesPath;
extraEtc = pkgs.lib.concatLists (map (job: job.extraEtc) upstartJobs.jobs);
};
# Font aggregation
fontDir = import ./fontdir.nix {
inherit config pkgs;
inherit (pkgs) builderDefs ttmkfdir;
inherit (pkgs.xorg) mkfontdir mkfontscale fontalias;
};
# The wrapper setuid programs (since we can't have setuid programs
# in the Nix store).
wrapperDir = "/var/setuid-wrappers";
setuidWrapper = import ../helpers/setuid {
inherit (pkgs) stdenv;
inherit wrapperDir;
};
# The packages you want in the boot environment.
systemPathList = [
# Better leave them here - they are small, needed,
# and hard to refer from anywhere outside.
modprobe # must take precedence over module_init_tools
nix
nixosTools.nixosInstall
nixosTools.nixosRebuild
nixosTools.nixosCheckout
nixosTools.nixosHardwareScan
nixosTools.nixosGenSeccureKeys
setuidWrapper
]
++ pkgs.lib.optionals (!config.environment.cleanStart) [
pkgs.bashInteractive # bash with ncurses support
pkgs.bzip2
pkgs.coreutils
pkgs.cpio
pkgs.cron
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.mdadm
pkgs.module_init_tools
pkgs.nano
pkgs.ncurses
pkgs.netcat
pkgs.nettools
pkgs.ntp
pkgs.openssh
pkgs.pciutils
pkgs.perl
pkgs.procps
pkgs.pwdutils
pkgs.reiserfsprogs
pkgs.rsync
pkgs.seccureUser
pkgs.strace
pkgs.su
pkgs.sysklogd
pkgs.sysvtools
pkgs.time
pkgs.udev
pkgs.upstart
pkgs.usbutils
pkgs.utillinux
pkgs.wirelesstools
]
++ pkgs.lib.optional config.security.sudo.enable pkgs.sudo
++ pkgs.lib.optional config.services.atd.enable pkgs.at
++ pkgs.lib.optional config.services.bitlbee.enable pkgs.bitlbee
++ pkgs.lib.optional config.services.avahi.enable pkgs.avahi
++ pkgs.lib.optional config.networking.defaultMailServer.directDelivery pkgs.ssmtp
++ pkgs.lib.concatLists (map (job: job.extraPath) upstartJobs.jobs)
++ config.environment.extraPackages pkgs
++ pkgs.lib.optional config.fonts.enableFontDir fontDir
++ pkgs.lib.optional config.hardware.enableGo7007 kernelPackages.wis_go7007
# NSS modules need to be in `systemPath' so that (i) the builder
# chroot gets to seem them, and (ii) applications can benefit from
# changes in the list of NSS modules at run-time, without requiring
# a reboot.
++ nssModules;
# 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.
systemPath = pkgs.buildEnv {
name = "system-path";
paths = systemPathList;
# Note: We need `/lib' to be among `pathsToLink' for NSS modules
# to work.
inherit (config.environment) pathsToLink;
ignoreCollisions = true;
};
usersGroups = import ./users-groups.nix { inherit pkgs config upstartJobs defaultShell; };
defaultShell = "/var/run/current-system/sw/bin/bash";
# 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 rec {
src = ./activate-configuration.sh;
isExecutable = true;
inherit etc wrapperDir systemPath modprobe defaultShell kernel;
hostName = config.networking.hostName;
setuidPrograms =
config.security.setuidPrograms ++
config.security.extraSetuidPrograms ++
pkgs.lib.optional config.security.sudo.enable "sudo" ++
pkgs.lib.optionals config.services.atd.enable ["at" "atq" "atrm"] ++
pkgs.lib.optional (config.services.xserver.sessionType == "kde") "kcheckpass";
inherit (usersGroups) createUsersGroups usersList groupsList;
path = [
pkgs.coreutils pkgs.gnugrep pkgs.findutils
pkgs.glibc # needed for getent
pkgs.pwdutils
];
bash = pkgs.bashInteractive;
adjustSetuidOwner = pkgs.lib.concatStrings (map
(_entry: let entry = {
owner = "nobody";
group = "nogroup";
setuid = false;
setgid = false;
} //_entry; in
''
chown ${entry.owner}.${entry.group} $wrapperDir/${entry.program}
chmod u${if entry.setuid then "+" else "-"}s $wrapperDir/${entry.program}
chmod g${if entry.setgid then "+" else "-"}s $wrapperDir/${entry.program}
'')
config.security.setuidOwners);
};
# 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 writeText coreutils
utillinux udev upstart;
inherit kernel activateConfiguration;
inherit (config.boot) isLiveCD;
upstartPath = [
pkgs.coreutils
pkgs.findutils
pkgs.gnugrep
pkgs.gnused
pkgs.upstart
];
bootLocal = config.boot.localCommands;
};
# 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];
inherit (config.boot) copyKernels extraGrubEntries extraGrubEntriesBeforeNixos
grubSplashImage bootMount configurationLimit;
};
# 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.checker (pkgs.stdenv.mkDerivation {
name = "system";
builder = ./system.sh;
switchToConfiguration = ./switch-to-configuration.sh;
inherit (pkgs) grub coreutils gnused gnugrep diffutils findutils upstart;
grubDevice = config.boot.grubDevice;
kernelParams =
config.boot.kernelParams ++ config.boot.extraKernelParams;
inherit bootStage2;
inherit activateConfiguration;
inherit grubMenuBuilder;
inherit etc;
inherit systemPath;
kernel = 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
];
children = map (x: ((import ./system.nix)
{inherit platform stage2Init;
configuration = x//{boot=((x.boot)//{grubDevice = "";});};}).system)
config.nesting.children;
configurationName = config.boot.configurationName;
}) (pkgs.lib.getAttr ["environment" "checkConfigurationOptions"]
optionDeclarations.environment.checkConfigurationOptions.default
configuration)
optionDeclarations configuration;
}