Add vm config

configuration/vm.nix

@@ -0,0 +1,87 @@
+{
+  pkgs,
+  ...
+}:
+
+{
+  # NixOS version.
+  system.stateVersion = "25.05";
+
+  # Enable flakes.
+  nix.settings.experimental-features = [
+    "nix-command"
+    "flakes"
+  ];
+
+  # Allow unfree packages.
+  nixpkgs.config.allowUnfree = true;
+
+  # Configure the bootloader.
+  boot.loader.grub = { 
+    enable = true;
+    device = "/dev/sda";
+  };
+
+  # Set time zone.
+  time.timeZone = "Australia/Perth";
+
+  # Select internationalisation properties.
+  i18n.defaultLocale = "en_AU.UTF-8";
+
+  i18n.extraLocaleSettings = {
+    LC_ADDRESS = "en_AU.UTF-8";
+    LC_IDENTIFICATION = "en_AU.UTF-8";
+    LC_MEASUREMENT = "en_AU.UTF-8";
+    LC_MONETARY = "en_AU.UTF-8";
+    LC_NAME = "en_AU.UTF-8";
+    LC_NUMERIC = "en_AU.UTF-8";
+    LC_PAPER = "en_AU.UTF-8";
+    LC_TELEPHONE = "en_AU.UTF-8";
+    LC_TIME = "en_AU.UTF-8";
+  };
+
+  # Configure keymap in X11.
+  services.xserver.xkb = {
+    layout = "us";
+    variant = "";
+  };
+
+  # Define a user account.
+  users.users.docker = {
+    isNormalUser = true;
+    extraGroups = [
+      "wheel"
+      "docker"
+    ];
+  };
+
+  # Install some packages.
+  programs.git.enable = true;
+
+  programs.neovim = {
+    enable = true;
+    defaultEditor = true; # Use neovim as default terminal editor.
+    configure = {
+      customRC = ''
+        set expandtab
+        set shiftwidth=2
+        set tabstop=8
+        set softtabstop=2
+        set number
+        colorscheme kanagawa-dragon
+      '';
+      packages.myVimPackage = with pkgs.vimPlugins; {
+        start = [ kanagawa-nvim ];
+      };
+    };
+  };
+
+  # Enable SSH server
+  services.openssh.enable = true;
+  
+  # Enable avahi hostname resolution.
+  services.avahi = {
+    enable = true;
+    nssmdns4 = true;
+  };
+}

flake.nix

@@ -34,9 +34,18 @@
           lanzaboote.nixosModules.lanzaboote
           nixos-hardware.nixosModules.lenovo-thinkpad-t480
 
-          ./configuration.nix
+          ./configuration/desktop.nix
           ./hardware-configuration/muskduck.nix # Include the results of the hardware scan.
         ];
       };
+
+      nixosConfigurations.vm = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+
+        modules = [
+          ./configuration/vm.nix
+          ./hardware-configuration/vm.nix # Include the results of the hardware scan.
+        ];
+      };
     };
 }