# This module creates a bootable ISO image containing the given NixOS # configuration. The derivation for the ISO image will be placed in # config.system.build.tarball. { config, pkgs, ... }: with pkgs.lib; let versionFile = pkgs.writeText "nixos-version" config.system.nixosVersion; in { options = { tarball.contents = mkOption { example = [ { source = pkgs.memtest86 + "/memtest.bin"; target = "boot/memtest.bin"; } ]; description = '' This option lists files to be copied to fixed locations in the generated ISO image. ''; }; tarball.storeContents = mkOption { example = [pkgs.stdenv]; description = '' This option lists additional derivations to be included in the Nix store in the generated ISO image. ''; }; }; config = { # In stage 1 of the boot, mount the CD/DVD as the root FS by label # so that we don't need to know its device. fileSystems = [ ]; # boot.initrd.availableKernelModules = [ "mvsdio" "mmc_block" "reiserfs" "ext3" "ext4" ]; # boot.initrd.kernelModules = [ "rtc_mv" ]; # Closures to be copied to the Nix store on the CD, namely the init # script and the top-level system configuration directory. tarball.storeContents = [ { object = config.system.build.toplevel; symlink = "/run/current-system"; } ]; # Individual files to be included on the CD, outside of the Nix # store on the CD. tarball.contents = [ { source = config.system.build.initialRamdisk + "/initrd"; target = "/boot/initrd"; } { source = versionFile; target = "/nixos-version.txt"; } ]; # Create the tarball system.build.tarball = import ../../../lib/make-system-tarball.nix { inherit (pkgs) stdenv perl xz pathsFromGraph; inherit (config.tarball) contents storeContents; }; boot.postBootCommands = '' # After booting, register the contents of the Nix store on the # CD in the Nix database in the tmpfs. if [ -f /nix-path-registration ]; then ${config.nix.package}/bin/nix-store --load-db < /nix-path-registration && rm /nix-path-registration fi # nixos-rebuild also requires a "system" profile and an # /etc/NIXOS tag. touch /etc/NIXOS ${config.nix.package}/bin/nix-env -p /nix/var/nix/profiles/system --set /run/current-system ''; }; }