1 configuration_file: { pkgs ? import <nixpkgs> {}, system ? builtins.currentSystem, myEnv, ... }:
3 config = (import <nixpkgs/nixos/lib/eval-config.nix> {
7 imports = [ configuration_file ];
9 # We want our template image to be as small as possible, but the deployed image should be able to be
10 # of any size. Hence we resize on the first boot.
11 systemd.services.resize-main-fs = {
12 wantedBy = [ "multi-user.target" ];
13 serviceConfig.Type = "oneshot";
16 # Resize main partition to fill whole disk
17 echo ", +" | ${pkgs.utillinux}/bin/sfdisk /dev/vda --no-reread -N 1
18 ${pkgs.parted}/bin/partprobe
20 ${pkgs.e2fsprogs}/bin/resize2fs /dev/vda1
25 in pkgs.vmTools.runInLinuxVM (
26 pkgs.runCommand "nixos-base-image"
33 ${pkgs.vmTools.qemu}/bin/qemu-img create -f qcow2 $diskImage 2G
38 echo compressing VM image...
39 ${pkgs.vmTools.qemu}/bin/qemu-img convert -c $diskImage -O qcow2 $out/nixos.qcow2
41 buildInputs = [ pkgs.utillinux pkgs.perl pkgs.parted pkgs.e2fsprogs ];
42 exportReferencesGraph =
43 [ "closure" config.system.build.toplevel ];
46 # Create the partition
47 parted /dev/vda mklabel msdos
48 parted /dev/vda -- mkpart primary ext4 1M -1s
50 # Format the partition
51 mkfs.ext4 -L nixos /dev/vda1
55 for dir in dev proc sys; do
57 mount --bind /$dir /mnt/$dir
60 storePaths=$(perl ${pkgs.pathsFromGraph} /tmp/xchg/closure)
61 echo filling Nix store...
62 mkdir -p /mnt/nix/store
64 cp -prd $storePaths /mnt/nix/store
65 # The permissions will be set up incorrectly if the host machine is not running NixOS
66 chown -R 0:30000 /mnt/nix/store
69 echo 'build-users-group = ' > /mnt/etc/nix/nix.conf
71 # Register the paths in the Nix database.
73 printRegistration=1 perl ${pkgs.pathsFromGraph} /tmp/xchg/closure | \
74 chroot /mnt ${config.nix.package.out}/bin/nix-store --load-db
76 # Create the system profile to allow nixos-rebuild to work.
77 chroot /mnt ${config.nix.package.out}/bin/nix-env \
78 -p /nix/var/nix/profiles/system --set ${config.system.build.toplevel}
80 # `nixos-rebuild' requires an /etc/NIXOS.
81 mkdir -p /mnt/etc/nixos
84 # `switch-to-configuration' requires a /bin/sh
86 ln -s ${config.system.build.binsh}/bin/sh /mnt/bin/sh
88 # Generate the GRUB menu.
89 chroot /mnt ${config.system.build.toplevel}/bin/switch-to-configuration boot
91 umount /mnt/{proc,dev,sys}