Massive refactoring in configurable modules

desktop.nix

@@ -0,0 +1,57 @@
+{ config, pkgs, lib, ... }:
+with lib;
+let
+  cfg = config.aviallon.desktop;
+in {
+  options.aviallon.desktop = {
+    enable = mkOption {
+      default = true;
+      example = false;
+      type = types.bool;
+      description = "Enable desktop related configuration";
+    };
+    layout = mkOption {
+      type = types.str;
+      default = "fr";
+      example = "us";
+    };
+  };
+
+  config = mkIf cfg.enable {
+
+    # Enable the X11 windowing system.
+    services.xserver.enable = true;
+    # Configure keymap in X11
+    services.xserver.layout = cfg.layout;
+    services.xserver.xkbOptions = "eurosign:e";
+
+
+    # Enable the Plasma 5 Desktop Environment.
+    services.xserver.displayManager.sddm.enable = true;
+    services.xserver.desktopManager.plasma5.enable = true;
+
+    # Enable CUPS to print documents.
+    services.printing.enable = true;
+
+    # Enable sound.
+    sound.enable = true;
+    # hardware.pulseaudio.enable = true;
+
+    # Enable touchpad support (enabled default in most desktopManager).
+    services.xserver.libinput.enable = true;
+
+
+    environment.systemPackages = with pkgs; with libsForQt5; [
+      firefox
+      konsole
+      kate
+      yakuake
+    ];
+
+    networking.networkmanager = {
+      packages = [
+        pkgs.networkmanager-openvpn
+      ];
+    };
+  };
+}