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Diffstat (limited to 'nixos/modules/virtualisation/google-compute-image.nix')
-rw-r--r-- | nixos/modules/virtualisation/google-compute-image.nix | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/nixos/modules/virtualisation/google-compute-image.nix b/nixos/modules/virtualisation/google-compute-image.nix new file mode 100644 index 00000000000..0c72696f802 --- /dev/null +++ b/nixos/modules/virtualisation/google-compute-image.nix @@ -0,0 +1,71 @@ +{ config, lib, pkgs, ... }: + +with lib; +let + cfg = config.virtualisation.googleComputeImage; + defaultConfigFile = pkgs.writeText "configuration.nix" '' + { ... }: + { + imports = [ + <nixpkgs/nixos/modules/virtualisation/google-compute-image.nix> + ]; + } + ''; +in +{ + + imports = [ ./google-compute-config.nix ]; + + options = { + virtualisation.googleComputeImage.diskSize = mkOption { + type = with types; either (enum [ "auto" ]) int; + default = "auto"; + example = 1536; + description = '' + Size of disk image. Unit is MB. + ''; + }; + + virtualisation.googleComputeImage.configFile = mkOption { + type = with types; nullOr str; + default = null; + description = '' + A path to a configuration file which will be placed at `/etc/nixos/configuration.nix` + and be used when switching to a new configuration. + If set to `null`, a default configuration is used, where the only import is + `<nixpkgs/nixos/modules/virtualisation/google-compute-image.nix>`. + ''; + }; + + virtualisation.googleComputeImage.compressionLevel = mkOption { + type = types.int; + default = 6; + description = '' + GZIP compression level of the resulting disk image (1-9). + ''; + }; + }; + + #### implementation + config = { + + system.build.googleComputeImage = import ../../lib/make-disk-image.nix { + name = "google-compute-image"; + postVM = '' + PATH=$PATH:${with pkgs; lib.makeBinPath [ gnutar gzip ]} + pushd $out + mv $diskImage disk.raw + tar -Sc disk.raw | gzip -${toString cfg.compressionLevel} > \ + nixos-image-${config.system.nixos.label}-${pkgs.stdenv.hostPlatform.system}.raw.tar.gz + rm $out/disk.raw + popd + ''; + format = "raw"; + configFile = if cfg.configFile == null then defaultConfigFile else cfg.configFile; + inherit (cfg) diskSize; + inherit config lib pkgs; + }; + + }; + +} |