moved more out of common config

modules/desktop.nix

@@ -0,0 +1,38 @@
+{pkgs, ...}: {
+  services = {
+    # Enable CUPS to print documents.
+    printing.enable = true;
+
+    xserver = {
+      # Enable the X11 windowing system.
+      enable = true;
+
+      # Enable the GNOME Desktop Environment.
+      displayManager.gdm.enable = true;
+      desktopManager = {
+        gnome.enable = true;
+      };
+
+      # Get rid of xTerm
+      desktopManager.xterm.enable = false;
+      excludePackages = [pkgs.xterm];
+    };
+
+    pipewire = {
+      enable = true;
+      alsa.enable = true;
+      alsa.support32Bit = true;
+      pulse.enable = true;
+
+      # If you want to use JACK applications, uncomment this
+      #jack.enable = true;
+
+      # use the example session manager (no others are packaged yet so this is enabled by default,
+      # no need to redefine it in your config for now)
+      #media-session.enable = true;
+    };
+  };
+
+  # Enable sound with pipewire.
+  hardware.pulseaudio.enable = false;
+}

modules/nix-development.nix

@@ -0,0 +1,14 @@
+{
+  inputs,
+  pkgs,
+  ...
+}: {
+  nix = {
+    nixPath = ["nixpkgs=${inputs.nixpkgs}"];
+  };
+
+  environment.systemPackages = with pkgs; [
+    # nix langauge server
+    nixd
+  ];
+}