rec { pkgs = import ./pkgs/top-level/all-packages.nix {}; pkgsDiet = import ./pkgs/top-level/all-packages.nix { bootStdenv = pkgs.useDietLibC pkgs.stdenv; }; pkgsStatic = import ./pkgs/top-level/all-packages.nix { bootStdenv = pkgs.makeStaticBinaries pkgs.stdenv; }; stdenvLinuxStuff = import ./pkgs/stdenv/linux { system = pkgs.stdenv.system; allPackages = import ./pkgs/top-level/all-packages.nix; }; # Determine the set of modules that we need to mount the root FS. modulesClosure = import ./modules-closure.nix { inherit (pkgs) stdenv kernel module_init_tools; rootModules = ["ide-cd" "ide-disk" "ide-generic"]; }; # 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.stdenv.mkDerivation { name = "extra-utils"; builder = builtins.toFile "builder.sh" "source $stdenv/setup; ensureDir $out/bin; cp $utillinux/bin/mount $out/bin; nuke-refs $out/bin/mount"; buildInputs = [pkgs.nukeReferences]; inherit (pkgsStatic) utillinux; }; # The init script of boot stage 1 (loading kernel modules for # mounting the root FS). bootStage1 = import ./boot-stage-1.nix { inherit (pkgs) genericSubstituter; inherit (pkgsDiet) module_init_tools; inherit extraUtils; modules = modulesClosure; shell = 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 ./make-initrd.nix { inherit (pkgs) stdenv cpio; packages = []; init = bootStage1; }; # The init script of boot stage 2, which is supposed to do # everything else to bring up the system. bootStage2 = import ./boot-stage-2.nix { inherit (pkgs) genericSubstituter coreutils utillinux; shell = pkgs.bash + "/bin/sh"; }; # Since the CD is read-only, the mount points must be on disk. cdMountPoints = pkgs.stdenv.mkDerivation { name = "mount-points"; builder = builtins.toFile "builder.sh" "source $stdenv/setup; mkdir $out; cd $out; mkdir proc sys tmp etc dev"; }; # Create an ISO image containing the isolinux boot loader, the # kernel, and initrd produced above. rescueCD = import ./make-iso9660-image.nix { inherit (pkgs) stdenv cdrtools; isoName = "nixos.iso"; contents = [ { source = pkgs.syslinux + "/lib/syslinux/isolinux.bin"; target = "isolinux/isolinux.bin"; } { source = ./isolinux.cfg; target = "isolinux/isolinux.cfg"; } { source = pkgs.kernel + "/vmlinuz"; target = "isolinux/vmlinuz"; } { source = initialRamdisk + "/initrd"; target = "isolinux/initrd"; } { source = cdMountPoints; target = "/"; } ]; init = bootStage2; bootable = true; bootImage = "isolinux/isolinux.bin"; }; }