feat: Add iso and lxc generation artifacts

.gitignore

@@ -0,0 +1,2 @@
+result/
+result

artifacts.nix

@@ -0,0 +1,73 @@
+{ inputs, hosts, self, system }:
+let
+  nixpkgs = inputs.nixpkgs;
+  lib = nixpkgs.lib;
+  nixos-generators = inputs.nixos-generators;
+
+  mkInstaller = hostName:
+    let
+      targetConfig = self.nixosConfigurations.${hostName}.config;
+      targetSystem = targetConfig.system.build.toplevel;
+      diskoScript = targetConfig.system.build.diskoScript;
+    in
+    nixpkgs.lib.nixosSystem {
+      inherit system;
+      specialArgs = {
+        inherit inputs hostName targetSystem diskoScript;
+        hostPlatform = system;
+      };
+      modules = [
+        "${nixpkgs}/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix"
+        inputs.disko.nixosModules.disko
+        ./installer/auto-install.nix
+      ];
+    };
+
+  mkGenerator = hostName: format:
+    nixos-generators.nixosGenerate {
+      inherit system;
+      specialArgs = { inherit inputs; };
+      modules = hosts.modules.${hostName} ++ [
+        {
+          disko.enableConfig = lib.mkForce false;
+          services.upower.enable = lib.mkForce false;
+        }
+      ];
+      inherit format;
+    };
+
+  hostNames = builtins.attrNames hosts.nixosConfigurations;
+
+  installerPackages = lib.listToAttrs (lib.concatMap (name:
+    let cfg = hosts.nixosConfigurations.${name}; in
+    if lib.elem "iso" cfg.config.host.buildMethods then [{
+      name = "installer-iso-${name}";
+      value = (mkInstaller name).config.system.build.isoImage;
+    }] else []
+  ) hostNames);
+
+  lxcPackages = lib.listToAttrs (lib.concatMap (name:
+    let cfg = hosts.nixosConfigurations.${name}; in
+    if lib.elem "lxc" cfg.config.host.buildMethods then [{
+      name = "lxc-${name}";
+      value =
+        if cfg.config.boot.isContainer then
+          cfg.config.system.build.tarball
+        else
+          mkGenerator name "lxc";
+    }] else []
+  ) hostNames);
+
+  proxmoxPackages = lib.listToAttrs (lib.concatMap (name:
+    let cfg = hosts.nixosConfigurations.${name}; in
+    if lib.elem "proxmox" cfg.config.host.buildMethods then [{
+      name = "proxmox-${name}";
+      value =
+        if cfg.config.boot.isContainer then
+          cfg.config.system.build.tarball
+        else
+          mkGenerator name "proxmox";
+    }] else []
+  ) hostNames);
+in
+installerPackages // lxcPackages // proxmoxPackages

flake.lock

@@ -284,6 +284,42 @@
         "type": "github"
       }
     },
+    "nixlib": {
+      "locked": {
+        "lastModified": 1736643958,
+        "narHash": "sha256-tmpqTSWVRJVhpvfSN9KXBvKEXplrwKnSZNAoNPf/S/s=",
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "rev": "1418bc28a52126761c02dd3d89b2d8ca0f521181",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "type": "github"
+      }
+    },
+    "nixos-generators": {
+      "inputs": {
+        "nixlib": "nixlib",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1764234087,
+        "narHash": "sha256-NHF7QWa0ZPT8hsJrvijREW3+nifmF2rTXgS2v0tpcEA=",
+        "owner": "nix-community",
+        "repo": "nixos-generators",
+        "rev": "032a1878682fafe829edfcf5fdfad635a2efe748",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixos-generators",
+        "type": "github"
+      }
+    },
     "nixos-hardware": {
       "locked": {
         "lastModified": 1764440730,
@@ -409,6 +445,7 @@
         "disko": "disko",
         "home-manager": "home-manager",
         "lazyvim-nixvim": "lazyvim-nixvim",
+        "nixos-generators": "nixos-generators",
         "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs_2",
         "nixpkgs-old-kernel": "nixpkgs-old-kernel",

flake.nix

@@ -36,6 +36,12 @@
       url = "github:nix-community/nixos-vscode-server";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+
+    # NixOS Generators for creating ISOs, LXC, etc.
+    nixos-generators = {
+      url = "github:nix-community/nixos-generators";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
   outputs =
     inputs@{
@@ -47,13 +53,22 @@
       lazyvim-nixvim,
       nixos-hardware,
       vscode-server,
+      nixos-generators,
       ...
     }:
+    let
+      hosts = import ./hosts { inherit inputs; };
+      system = "x86_64-linux";
+    in
     {
       # Formatter for 'nix fmt'
       formatter.x86_64-linux = nixpkgs.legacyPackages.x86_64-linux.nixfmt-rfc-style;
 
       # Generate NixOS configurations from hosts/default.nix
-      nixosConfigurations = import ./hosts { inherit inputs; };
+      nixosConfigurations = hosts.nixosConfigurations;
+
+      packages.${system} = import ./artifacts.nix {
+        inherit inputs hosts self system;
+      };
     };
 }

hosts/boot.nix

@@ -23,6 +23,11 @@
         description = "The size of the swap partition.";
       };
     };
+    buildMethods = lib.mkOption {
+      type = lib.types.listOf lib.types.str;
+      default = [ "iso" ];
+      description = "List of allowed build methods (iso, lxc, proxmox).";
+    };
   };
 
   config = {

hosts/default.nix

@@ -69,11 +69,20 @@ let
           { }
       ) accounts;
     in
-    lib.nixosSystem {
+    {
-      inherit system;
+      system = lib.nixosSystem {
+        inherit system;
 
-      specialArgs = { inherit inputs; };
+        specialArgs = { inherit inputs; };
 
+        modules =
+          commonModules
+          ++ userFlakeModules
+          ++ extraModules
+          ++ [
+            { networking.hostName = hostName; }
+          ];
+      };
       modules =
         commonModules
         ++ userFlakeModules
@@ -122,17 +131,19 @@ let
                 "flakeUrl"
                 "hostname"
                 "modules"
+                "buildMethods"
               ];
               extraConfig = lib.removeAttrs devConf [
                 "extraUsers"
                 "flakeUrl"
                 "hostname"
+                "buildMethods"
               ];
             in
-            lib.mkIf hasOverride (lib.recursiveUpdate {
+            lib.mkIf hasOverride (lib.recursiveUpdate (lib.recursiveUpdate {
               host.filesystem = fsConf;
               modules.users.enabledUsers = devConf.extraUsers or [ ];
-            } extraConfig);
+            } (lib.optionalAttrs (devConf ? buildMethods) { host.buildMethods = devConf.buildMethods; })) extraConfig);
 
           config = mkHost {
             hostName = hostName;
@@ -170,5 +181,9 @@ let
     }
   ) hosts;
 
+  allHosts = lib.foldl' lib.recursiveUpdate { } hostGroups;
 in
-lib.foldl' lib.recursiveUpdate { } hostGroups
+{
+  nixosConfigurations = lib.mapAttrs (n: v: v.system) allHosts;
+  modules = lib.mapAttrs (n: v: v.modules) allHosts;
+}

hosts/types/nix-laptop.nix

@@ -39,7 +39,7 @@
       host.filesystem.swapSize = lib.mkDefault "34G";
 
       # Suspend / logind behavior
-      services.upower.enable = true;
+      services.upower.enable = lib.mkDefault true;
       services.logind.settings = {
         Login = {
           HandleLidSwitch = "suspend";

hosts/types/nix-lxc.nix

@@ -35,6 +35,7 @@
       ];
       services.vscode-server.enable = true;
       system.stateVersion = "25.11";
+      host.buildMethods = lib.mkDefault [ "lxc" "proxmox" ];
     }
   )
   {

installer/auto-install.nix

@@ -0,0 +1,47 @@
+{ config, lib, pkgs, inputs, hostName, hostPlatform, targetSystem, diskoScript, ... }:
+{
+  environment.systemPackages = [
+    pkgs.git
+    pkgs.bashInteractive
+    pkgs.curl
+    targetSystem
+  ];
+
+  # Enable networking
+  networking.hostName = "autoinstaller-${hostName}";
+  networking.networkmanager.enable = lib.mkForce false;
+  networking.wireless = {
+    enable = true;
+    networks = {
+      "IOT_sensors".psk = "aaaaaaaa";
+    };
+  };
+  nixpkgs.hostPlatform = hostPlatform;
+
+  systemd.services.auto-install = {
+    description = "Automatic NixOS install for ${hostName}";
+    after = [ "network-online.target" "systemd-udev-settle.service" ];
+    wants = [ "network-online.target" ];
+    wantedBy = [ "multi-user.target" ];
+
+    serviceConfig = {
+      Type = "oneshot";
+      StandardOutput = "journal+console";
+      StandardError = "journal+console";
+      Environment = "PATH=/run/current-system/sw/bin";
+    };
+
+    script = ''
+      echo "=== AUTO INSTALL START for ${hostName} ==="
+
+      echo ">>> Running disko script..."
+      ${diskoScript}
+
+      echo ">>> Running nixos-install..."
+      nixos-install --no-root-passwd --system ${targetSystem}
+
+      echo ">>> Done. Rebooting."
+      systemctl reboot
+    '';
+  };
+}