Modularize NixOS 'vm' configuration

hosts/vm/configuration.nix

@@ -0,0 +1,52 @@
+{ pkgs, ... }:
+
+{
+  system.stateVersion = "25.05";
+
+  imports =
+    [
+      ./hard.nix
+      ../../modules/bootloader.nix
+      ../../modules/networking.nix
+      ../../modules/users.nix
+      ../../modules/audio.nix
+      ../../modules/printing.nix
+      ../../modules/localization.nix
+      ../../modules/x.nix
+    ];
+
+  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+
+  programs.git.enable = true;
+  programs.firefox.enable = true;
+
+  nixpkgs.config.allowUnfree = true;
+
+  environment.systemPackages = with pkgs; [ neovim ];
+
+  services.spice-vdagentd.enable = true;
+  services.openssh = {
+    enable = true;
+    startWhenNeeded = true;
+    settings = {
+      ## hardening
+      PermitRootLogin = "no";
+      MaxAuthTries = 3;
+      LoginGraceTime = "1m";
+      PasswordAuthentication = false;
+      PermitEmptyPasswords = false;
+      ChallengeResponseAuthentication = false;
+      KerberosAuthentication = false;
+      GSSAPIAuthentication = false;
+      X11Forwarding = false;
+      PermitUserEnvironment = false;
+      AllowAgentForwarding = false;
+      AllowTcpForwarding = false;
+      PermitTunnel = false;
+      ## sshd_config defaults on Arch Linux
+      KbdInteractiveAuthentication = false;
+      UsePAM = true;
+      PrintMotd = false;
+    };
+  };
+}

hosts/vm/hard.nix

@@ -0,0 +1,33 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/profiles/qemu-guest.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "ahci" "xhci_pci" "virtio_pci" "sr_mod" "virtio_blk" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/7d406784-bf6b-420e-a956-134f719c8206";
+      fsType = "ext4";
+    };
+
+  swapDevices =
+    [ { device = "/dev/disk/by-uuid/4cbaffdb-0ca2-4735-87d0-eefe994f0e18"; }
+    ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp1s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}

hosts/vm/home.nix

@@ -0,0 +1,12 @@
+{ config, pkgs, ... }:
+
+{
+  home.stateVersion = "25.05";
+
+  home.username = "h";
+  home.homeDirectory = "/home/h";
+
+  home.file.".inputrc".source = ./dots/.inputrc;
+
+  programs.home-manager.enable = true;
+}