389 lines
11 KiB
Nix
389 lines
11 KiB
Nix
{ platform ? __currentSystem
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, stage2Init ? ""
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, configuration
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}:
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rec {
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# Make a configuration object from which we can retrieve option
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# values.
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config = pkgs.lib.addDefaultOptionValues optionDeclarations configuration;
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optionDeclarations = import ./options.nix {inherit pkgs; inherit (pkgs.lib) mkOption;};
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pkgs = import ../pkgs/top-level/all-packages.nix {system = platform;};
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pkgsDiet = import ../pkgs/top-level/all-packages.nix {
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system = platform;
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bootStdenv = pkgs.useDietLibC pkgs.stdenv;
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};
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pkgsStatic = import ../pkgs/top-level/all-packages.nix {
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system = platform;
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bootStdenv = pkgs.makeStaticBinaries pkgs.stdenv;
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};
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stdenvLinuxStuff = import ../pkgs/stdenv/linux {
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system = pkgs.stdenv.system;
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allPackages = import ../pkgs/top-level/all-packages.nix;
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};
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manifests = config.installer.manifests; # exported here because nixos-rebuild uses it
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nix = config.environment.nix pkgs;
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kernel = config.boot.kernel pkgs;
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rootModules =
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config.boot.initrd.extraKernelModules ++
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config.boot.initrd.kernelModules;
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# Determine the set of modules that we need to mount the root FS.
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modulesClosure = import ../helpers/modules-closure.nix {
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inherit (pkgs) stdenv module_init_tools;
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inherit kernel rootModules;
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};
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# Some additional utilities needed in stage 1, notably mount. We
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# don't want to bring in all of util-linux, so we just copy what we
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# need.
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extraUtils = pkgs.runCommand "extra-utils"
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{ buildInputs = [pkgs.nukeReferences];
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inherit (pkgsStatic) utillinux;
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inherit (pkgsDiet) udev;
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e2fsprogs = pkgs.e2fsprogsDiet;
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devicemapper = if config.boot.initrd.lvm then pkgs.devicemapperStatic else null;
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lvm2 = if config.boot.initrd.lvm then pkgs.lvm2Static else null;
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allowedReferences = []; # prevent accidents like glibc being included in the initrd
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}
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"
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ensureDir $out/bin
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if test -n \"$devicemapper\"; then
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cp $devicemapper/sbin/dmsetup.static $out/bin/dmsetup
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cp $lvm2/sbin/lvm.static $out/bin/lvm
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fi
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cp $utillinux/bin/mount $utillinux/bin/umount $utillinux/sbin/pivot_root $out/bin
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cp -p $e2fsprogs/sbin/fsck* $e2fsprogs/sbin/e2fsck $out/bin
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cp $udev/sbin/udevd $udev/sbin/udevtrigger $udev/sbin/udevsettle $out/bin
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nuke-refs $out/bin/*
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";
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# The init script of boot stage 1 (loading kernel modules for
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# mounting the root FS).
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bootStage1 = import ../boot/boot-stage-1.nix {
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inherit (pkgs) substituteAll;
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inherit (pkgsDiet) module_init_tools;
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inherit extraUtils;
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inherit (config.boot) autoDetectRootDevice isLiveCD;
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fileSystems =
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pkgs.lib.filter
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(fs: fs.mountPoint == "/" || (fs ? neededForBoot && fs.neededForBoot))
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(config.fileSystems);
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rootLabel = config.boot.rootLabel;
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inherit stage2Init;
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modulesDir = modulesClosure;
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modules = rootModules;
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staticShell = stdenvLinuxStuff.bootstrapTools.bash;
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staticTools = stdenvLinuxStuff.staticTools;
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};
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# The closure of the init script of boot stage 1 is what we put in
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# the initial RAM disk.
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initialRamdisk = import ../boot/make-initrd.nix {
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inherit (pkgs) perl stdenv cpio;
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contents = [
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{ object = bootStage1;
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symlink = "/init";
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}
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] ++ (if config.boot.initrd.enableSplashScreen then [
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{ object = pkgs.runCommand "splashutils" {} "
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ensureDir $out/bin
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cp ${pkgs.splashutils}/bin/splash_helper $out/bin
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";
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suffix = "/bin/splash_helper";
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symlink = "/sbin/splash_helper";
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}
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{ object = import ../helpers/unpack-theme.nix {
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inherit (pkgs) stdenv;
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theme = config.services.ttyBackgrounds.defaultTheme;
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};
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symlink = "/etc/splash";
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}
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] else []);
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};
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# The installer.
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nixosInstall = import ../installer/nixos-install.nix {
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inherit (pkgs) perl runCommand substituteAll;
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inherit nix;
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nixpkgsURL = config.installer.nixpkgsURL;
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};
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nixosRebuild = import ../installer/nixos-rebuild.nix {
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inherit (pkgs) substituteAll;
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};
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nixosCheckout = import ../installer/nixos-checkout.nix {
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inherit (pkgs) substituteAll;
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};
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# NSS modules. Hacky!
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nssModules =
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if config.users.ldap.enable then [pkgs.nss_ldap] else [];
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nssModulesPath = pkgs.lib.concatStrings (pkgs.lib.intersperse ":"
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(map (mod: mod + "/lib") nssModules));
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# Tree of kernel modules. This includes the kernel, plus modules
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# built outside of the kernel. We have to combine these into a
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# single tree of symlinks because modprobe only supports one
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# directory.
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modulesTree = pkgs.module_aggregation (
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[kernel]
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++ pkgs.lib.optional config.networking.enableIntel3945ABGFirmware pkgs.iwlwifi
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# !!! this should be declared by the xserver Upstart job.
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++ pkgs.lib.optional (config.services.xserver.enable && config.services.xserver.videoDriver == "nvidia") pkgs.nvidiaDrivers
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);
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# Wrapper around modprobe to set the path to the modules.
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modprobe = pkgs.substituteAll {
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dir = "sbin";
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src = ./modprobe;
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isExecutable = true;
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inherit (pkgs) module_init_tools;
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inherit modulesTree;
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};
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# Environment variables for running Nix.
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nixEnvVars =
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"export NIX_CONF_DIR=/nix/etc/nix\n" +
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(if config.nix.distributedBuilds then
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"export NIX_BUILD_HOOK=${nix}/libexec/nix/build-remote.pl\n" +
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"export NIX_REMOTE_SYSTEMS=/etc/nix.machines\n" +
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"export NIX_CURRENT_LOAD=/var/run/nix/current-load\n"
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else "");
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# The services (Upstart) configuration for the system.
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upstartJobs = import ../upstart-jobs/default.nix {
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inherit config pkgs nix modprobe nssModulesPath nixEnvVars;
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};
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# The static parts of /etc.
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etc = import ../etc/default.nix {
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inherit config pkgs upstartJobs systemPath wrapperDir
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defaultShell nixEnvVars modulesTree;
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extraEtc = pkgs.lib.concatLists (map (job: job.extraEtc) upstartJobs.jobs);
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};
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# Font aggregation
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fontDir = import ./fontdir.nix {
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stdenv = pkgs.stdenv;
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inherit pkgs config;
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inherit (pkgs.xorg) mkfontdir mkfontscale fontalias;
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};
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# The wrapper setuid programs (since we can't have setuid programs
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# in the Nix store).
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wrapperDir = "/var/setuid-wrappers";
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setuidWrapper = import ../helpers/setuid {
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inherit (pkgs) stdenv;
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inherit wrapperDir;
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};
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# The packages you want in the boot environment.
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systemPathList = (if config.environment.cleanStart then
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[
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# Better leave them here - they are small, needed,
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# and hard to refer from anywhere outside.
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modprobe
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nix
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nixosInstall
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nixosRebuild
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nixosCheckout
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setuidWrapper
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]
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else
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[
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modprobe # must take precedence over module_init_tools
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pkgs.bashInteractive # bash with ncurses support
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pkgs.bzip2
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pkgs.coreutils
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pkgs.cpio
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pkgs.cron
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pkgs.curl
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pkgs.e2fsprogs
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pkgs.findutils
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pkgs.glibc # for ldd, getent
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pkgs.gnugrep
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pkgs.gnused
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pkgs.gnutar
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pkgs.grub
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pkgs.gzip
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pkgs.iputils
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pkgs.less
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pkgs.lvm2
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pkgs.man
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pkgs.mdadm
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pkgs.module_init_tools
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pkgs.nano
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pkgs.netcat
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pkgs.nettools
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pkgs.ntp
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pkgs.openssh
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pkgs.pciutils
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pkgs.perl
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pkgs.procps
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pkgs.pwdutils
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pkgs.reiserfsprogs
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pkgs.rsync
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pkgs.strace
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pkgs.su
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pkgs.sysklogd
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pkgs.sysvtools
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pkgs.time
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pkgs.udev
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pkgs.upstart
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pkgs.usbutils
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pkgs.utillinux
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pkgs.wirelesstools
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nix
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nixosInstall
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nixosRebuild
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nixosCheckout
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setuidWrapper
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])
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++ pkgs.lib.optional (config.security.sudo.enable) pkgs.sudo
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++ pkgs.lib.optional (config.networking.defaultMailServer.directDelivery) pkgs.ssmtp
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++ pkgs.lib.concatLists (map (job: job.extraPath) upstartJobs.jobs)
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++ (config.environment.extraPackages) pkgs
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++ pkgs.lib.optional (config.fonts.enableFontDir) fontDir;
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# We don't want to put all of `startPath' and `path' in $PATH, since
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# then we get an embarrassingly long $PATH. So use the user
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# environment builder to make a directory with symlinks to those
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# packages.
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systemPath = pkgs.buildEnv {
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name = "system-path";
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paths = systemPathList;
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inherit (config.environment) pathsToLink;
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ignoreCollisions = true;
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};
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usersGroups = import ./users-groups.nix { inherit pkgs config upstartJobs defaultShell; };
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defaultShell = "/var/run/current-system/sw/bin/bash";
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# The script that activates the configuration, i.e., it sets up
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# /etc, accounts, etc. It doesn't do anything that can only be done
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# at boot time (such as start `init').
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activateConfiguration = pkgs.substituteAll {
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src = ./activate-configuration.sh;
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isExecutable = true;
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inherit etc wrapperDir systemPath modprobe defaultShell kernel;
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hostName = config.networking.hostName;
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setuidPrograms =
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config.security.setuidPrograms ++
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config.security.extraSetuidPrograms ++
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pkgs.lib.optional (config.security.sudo.enable) "sudo";
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inherit (usersGroups) createUsersGroups usersList groupsList;
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path = [
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pkgs.coreutils pkgs.gnugrep pkgs.findutils
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pkgs.glibc # needed for getent
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pkgs.pwdutils
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];
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bash = pkgs.bashInteractive;
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};
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# The init script of boot stage 2, which is supposed to do
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# everything else to bring up the system.
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bootStage2 = import ../boot/boot-stage-2.nix {
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inherit (pkgs) substituteAll writeText coreutils
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utillinux udev upstart;
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inherit kernel activateConfiguration;
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inherit (config.boot) isLiveCD;
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upstartPath = [
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pkgs.coreutils
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pkgs.findutils
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pkgs.gnugrep
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pkgs.gnused
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pkgs.upstart
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];
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bootLocal = config.boot.localCommands;
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};
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# Script to build the Grub menu containing the current and previous
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# system configurations.
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grubMenuBuilder = pkgs.substituteAll {
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src = ../installer/grub-menu-builder.sh;
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isExecutable = true;
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inherit (pkgs) bash;
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path = [pkgs.coreutils pkgs.gnused pkgs.gnugrep];
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inherit (config.boot) copyKernels extraGrubEntries
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grubSplashImage bootMount configurationLimit;
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};
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# Putting it all together. This builds a store object containing
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# symlinks to the various parts of the built configuration (the
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# kernel, the Upstart services, the init scripts, etc.) as well as a
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# script `switch-to-configuration' that activates the configuration
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# and makes it bootable.
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system = pkgs.checker (pkgs.stdenv.mkDerivation {
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name = "system";
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builder = ./system.sh;
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switchToConfiguration = ./switch-to-configuration.sh;
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inherit (pkgs) grub coreutils gnused gnugrep diffutils findutils upstart;
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grubDevice = config.boot.grubDevice;
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kernelParams =
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config.boot.kernelParams ++ config.boot.extraKernelParams;
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inherit bootStage2;
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inherit activateConfiguration;
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inherit grubMenuBuilder;
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inherit etc;
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inherit systemPath;
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kernel = kernel + "/vmlinuz";
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initrd = initialRamdisk + "/initrd";
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# Most of these are needed by grub-install.
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path = [
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pkgs.coreutils
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pkgs.gnused
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pkgs.gnugrep
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pkgs.findutils
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pkgs.diffutils
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pkgs.upstart # for initctl
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];
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children = map (x: ((import ./system.nix)
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{inherit platform stage2Init;
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configuration = x//{boot=((x.boot)//{grubDevice = "";});};}).system)
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config.nesting.children;
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configurationName = config.boot.configurationName;
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}) (pkgs.lib.getAttr ["environment" "checkConfigurationOptions"]
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optionDeclarations.environment.checkConfigurationOptions.default
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configuration)
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optionDeclarations configuration ;
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}
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