Add multi-host configuration

based loosely on https://github.com/tom-on-the-internet/system-configuration

hosts/desktop.nix

@@ -0,0 +1,36 @@
+{ config, pkgs, ... }:
+
+{
+  services = {
+    xserver = {
+      enable = true;
+      libinput = {
+        enable = true;
+        touchpad = {
+          naturalScrolling = true;
+          tapping = true;
+        };
+      };
+      xkbOptions = "caps:escape";
+      displayManager = {
+      	lightdm.enable = true;
+        #sddm.enable = true;
+        defaultSession = "none+i3";
+      };
+      windowManager.i3 = {
+        enable = true;
+        package = pkgs.i3-gaps;
+      };
+    };
+  };
+
+  sound.enable = true;
+  hardware.pulseaudio.enable = true;
+  nixpkgs.config.pulseaudio = true;
+
+  fonts.fonts = with pkgs; [
+    noto-fonts
+    noto-fonts-cjk
+    (nerdfonts.override { fonts = [ "FiraCode" ]; }) # required for icons
+  ];
+}