[NixOS] Move desktop stuff out of base.nix

nixos/desktop.nix

@@ -0,0 +1,41 @@
+{ config, pkgs, options, inputs, ... }:
+{
+  imports = [
+    ./fonts.nix
+  ];
+  nixpkgs.overlays = with inputs; [
+    xmonad.overlay
+    xmonad-contrib.overlay
+    notifications-tray-icon.overlay
+  ] ++ taffybar.overlays;
+
+  services.autorandr.enable = true;
+
+  services.xserver = {
+    exportConfiguration = true;
+    enable = true;
+    layout = "us";
+    desktopManager = {
+      plasma5.enable = true;
+    };
+    windowManager = {
+      session = [
+        {
+          name = "xmonad";
+          start = ''
+            /usr/bin/env imalison-xmonad &
+            waitPID=$!
+          '';
+        }
+      ];
+    };
+    displayManager = {
+      sddm = {
+        enable = true;
+      };
+      sessionCommands = ''
+        systemctl --user import-environment GDK_PIXBUF_MODULE_FILE DBUS_SESSION_BUS_ADDRESS PATH
+      '';
+    };
+  };
+}