Modularize '/etc/configuration.nix'

modules/audio.nix

@@ -0,0 +1,12 @@
+{ ... }:
+
+{
+  services.pulseaudio.enable = false;
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+  };
+}

modules/bootloader.nix

@@ -0,0 +1,7 @@
+{ ... }:
+
+{
+  boot.loader.grub.enable = true;
+  boot.loader.grub.device = "/dev/vda";
+  boot.loader.grub.useOSProber = true;
+}

modules/hardware-configuration.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";
+}

modules/localization.nix

@@ -0,0 +1,6 @@
+{ ... }:
+
+{
+  time.timeZone = "Europe/Brussels";
+  i18n.defaultLocale = "en_US.UTF-8";
+}

modules/networking.nix

@@ -0,0 +1,19 @@
+{ ... }:
+
+{
+  networking.hostName = "nixos"; # Define your hostname.
+  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
+
+  # Configure network proxy if necessary
+  # networking.proxy.default = "http://user:password@proxy:port/";
+  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
+
+  # Enable networking
+  networking.networkmanager.enable = true;
+
+  # Open ports in the firewall.
+  # networking.firewall.allowedTCPPorts = [ ... ];
+  # networking.firewall.allowedUDPPorts = [ ... ];
+  # Or disable the firewall altogether.
+  # networking.firewall.enable = false;
+}

modules/printing.nix

@@ -0,0 +1,5 @@
+{ ... }:
+
+{ 
+  services.printing.enable = true;
+}

modules/users.nix

@@ -0,0 +1,12 @@
+{ pkgs, ... }:
+
+{
+  users.users.h = {
+    isNormalUser = true;
+    description = "h";
+    extraGroups = [ "networkmanager" "wheel" ];
+    packages = with pkgs; [
+    #  thunderbird
+    ];
+  };
+}

modules/x.nix

@@ -0,0 +1,11 @@
+{ ... }:
+
+{
+  services.xserver = {
+    enable = true;
+    displayManager.gdm.enable = true;
+    desktopManager.gnome.enable = true;
+    xkb.layout = "us";
+    xkb.variant = "";
+  };
+}