Added configuration for desktop

modules/system/desktop/nvidia.nix

@@ -0,0 +1,38 @@
+{ config, lib, pkgs, nixpkgs, ... }:
+
+{
+  nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
+    "nvidia-x11"
+    "nvidia-settings"
+  ];
+  hardware.opengl = {
+    enable = true;
+    driSupport = true;
+    driSupport32Bit = true;
+  };
+
+  services.xserver.videoDrivers = ["nvidia"]; # or "nvidiaLegacy470 etc.
+
+  hardware.nvidia = {
+
+    modesetting.enable = true;
+
+    powerManagement.enable = false;
+
+    # Fine-grained power management. Turns off GPU when not in use.
+    # Experimental and only works on modern Nvidia GPUs (Turing or newer).
+    powerManagement.finegrained = false;
+
+    # Use the NVidia open source kernel module (not to be confused with the
+    # independent third-party "nouveau" open source driver).
+    # Support is limited to the Turing and later architectures. Full list of 
+    # supported GPUs is at: 
+    # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus 
+    # Only available from driver 515.43.04+
+    # Currently alpha-quality/buggy, so false is currently the recommended setting.
+    open = false;
+    nvidiaSettings = true;
+
+    package = config.boot.kernelPackages.nvidiaPackages.stable;
+  };
+}

modules/system/desktop/plasma.nix

@@ -0,0 +1,19 @@
+{ ... }:
+
+{
+  services.xserver.enable = true;
+  services.xserver.displayManager.sddm.enable = true;
+  services.xserver.desktopManager.plasma5.enable = true;
+
+  sound.enable = true;
+  hardware.pulseaudio.enable = false;
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+  };
+
+  programs.dconf.enable = true;
+}

modules/system/programs/sunshine.nix

@@ -0,0 +1,25 @@
+{ pkgs, ... }:
+
+{
+  environment.systemPackages = with pkgs; [
+    unstable.sunshine
+  ];
+
+  services.udev.extraRules = ''
+    KERNEL=="uinput", SUBSYSTEM=="misc", OPTIONS+="static_node=uinput", TAG+="uaccess"
+  '';
+
+  services.avahi = {
+    enable = true;
+  };
+
+  networking.firewall = {
+    allowedTCPPorts = [ 48010 ];
+    allowedTCPPortRanges = [
+      { from = 47984; to = 47990; }
+    ];
+    allowedUDPPortRanges = [
+      { from = 47998; to = 48000; }
+    ];
+  };
+}

modules/system/utils/firewall.nix

@@ -0,0 +1,7 @@
+{ ... }:
+
+{
+  networking.firewall = {
+    enable = true;
+  };
+}