pyrox.dev
1{ config, lib, pkgs, ... }:
2
3with lib;
4let
5 cfg = config.virtualisation.googleComputeImage;
6 defaultConfigFile = pkgs.writeText "configuration.nix" ''
7 { ... }:
8 {
9 imports = [
10 <nixpkgs/nixos/modules/virtualisation/google-compute-image.nix>
11 ];
12 }
13 '';
14in
15{
16
17 imports = [ ./google-compute-config.nix ];
18
19 options = {
20 virtualisation.googleComputeImage.diskSize = mkOption {
21 type = with types; either (enum [ "auto" ]) int;
22 default = "auto";
23 example = 1536;
24 description = ''
25 Size of disk image. Unit is MB.
26 '';
27 };
28
29 virtualisation.googleComputeImage.configFile = mkOption {
30 type = with types; nullOr str;
31 default = null;
32 description = ''
33 A path to a configuration file which will be placed at `/etc/nixos/configuration.nix`
34 and be used when switching to a new configuration.
35 If set to `null`, a default configuration is used, where the only import is
36 `<nixpkgs/nixos/modules/virtualisation/google-compute-image.nix>`.
37 '';
38 };
39
40 virtualisation.googleComputeImage.compressionLevel = mkOption {
41 type = types.int;
42 default = 6;
43 description = ''
44 GZIP compression level of the resulting disk image (1-9).
45 '';
46 };
47 virtualisation.googleComputeImage.efi = mkEnableOption "EFI booting";
48 };
49
50 #### implementation
51 config = {
52 boot.initrd.availableKernelModules = [ "nvme" ];
53 boot.loader.grub = mkIf cfg.efi {
54 device = mkForce "nodev";
55 efiSupport = true;
56 efiInstallAsRemovable = true;
57 };
58
59 fileSystems."/boot" = mkIf cfg.efi {
60 device = "/dev/disk/by-label/ESP";
61 fsType = "vfat";
62 };
63
64 system.build.googleComputeImage = import ../../lib/make-disk-image.nix {
65 name = "google-compute-image";
66 postVM = ''
67 PATH=$PATH:${with pkgs; lib.makeBinPath [ gnutar gzip ]}
68 pushd $out
69 mv $diskImage disk.raw
70 tar -Sc disk.raw | gzip -${toString cfg.compressionLevel} > \
71 nixos-image-${config.system.nixos.label}-${pkgs.stdenv.hostPlatform.system}.raw.tar.gz
72 rm $out/disk.raw
73 popd
74 '';
75 format = "raw";
76 configFile = if cfg.configFile == null then defaultConfigFile else cfg.configFile;
77 partitionTableType = if cfg.efi then "efi" else "legacy";
78 inherit (cfg) diskSize;
79 inherit config lib pkgs;
80 };
81
82 };
83
84}