configuration_file: { pkgs, myEnv, nixpkgs, environment, pkgs-no-overlay, ... }: let config = (import (nixpkgs + "/nixos/lib/eval-config.nix") { inherit (pkgs) system; modules = [ { _module.args.environment = environment; myEnv = myEnv; imports = [ (nixpkgs + "/nixos/modules/profiles/qemu-guest.nix") configuration_file ]; # We want our template image to be as small as possible, but the deployed image should be able to be # of any size. Hence we resize on the first boot. systemd.services.resize-main-fs = { wantedBy = [ "multi-user.target" ]; serviceConfig.Type = "oneshot"; script = '' # Resize main partition to fill whole disk echo ", +" | ${pkgs.utillinux}/bin/sfdisk /dev/vda --no-reread -N 1 ${pkgs.parted}/bin/partprobe # Resize filesystem ${pkgs.e2fsprogs}/bin/resize2fs /dev/vda1 ''; }; } ]; }).config; in pkgs-no-overlay.vmTools.runInLinuxVM ( pkgs.runCommand "nixos-base-image" { memSize = 768; preVM = '' mkdir $out diskImage=image.qcow2 ${pkgs-no-overlay.vmTools.qemu}/bin/qemu-img create -f qcow2 $diskImage 2G mv closure xchg/ ''; postVM = '' echo compressing VM image... ${pkgs-no-overlay.vmTools.qemu}/bin/qemu-img convert -c $diskImage -O qcow2 $out/nixos.qcow2 ''; buildInputs = [ pkgs.utillinux pkgs.perl pkgs.parted pkgs.e2fsprogs ]; exportReferencesGraph = [ "closure" config.system.build.toplevel ]; } '' # Create the partition parted /dev/vda mklabel msdos parted /dev/vda -- mkpart primary ext4 1M -1s # Format the partition mkfs.ext4 -L nixos /dev/vda1 mkdir /mnt mount /dev/vda1 /mnt for dir in dev proc sys; do mkdir /mnt/$dir mount --bind /$dir /mnt/$dir done storePaths=$(perl ${pkgs.pathsFromGraph} /tmp/xchg/closure) echo filling Nix store... mkdir -p /mnt/nix/store set -f cp -prd $storePaths /mnt/nix/store # The permissions will be set up incorrectly if the host machine is not running NixOS chown -R 0:30000 /mnt/nix/store mkdir -p /mnt/etc/nix echo 'build-users-group = ' > /mnt/etc/nix/nix.conf # Register the paths in the Nix database. export USER=root printRegistration=1 perl ${pkgs.pathsFromGraph} /tmp/xchg/closure | \ chroot /mnt ${config.nix.package.out}/bin/nix-store --load-db # Create the system profile to allow nixos-rebuild to work. chroot /mnt ${config.nix.package.out}/bin/nix-env \ -p /nix/var/nix/profiles/system --set ${config.system.build.toplevel} # `nixos-rebuild' requires an /etc/NIXOS. mkdir -p /mnt/etc/nixos touch /mnt/etc/NIXOS # `switch-to-configuration' requires a /bin/sh mkdir -p /mnt/bin ln -s ${config.system.build.binsh}/bin/sh /mnt/bin/sh # Generate the GRUB menu. chroot /mnt ${config.system.build.toplevel}/bin/switch-to-configuration boot umount /mnt/{proc,dev,sys} umount /mnt '' )