refactor: flake dir -> outputs/sys -> nixos

nixos/modules/roles/gaming/default.nix

@@ -0,0 +1,69 @@
+{ lib, config, pkgs, ... }:
+
+let
+  inherit (lib) mkIf;
+  inherit (builtins) elem;
+  steamFix = pkgs.steam.override {
+    extraPkgs = pkgs: with pkgs; [
+      xorg.libXcursor
+      xorg.libXi
+      xorg.libXinerama
+      xorg.libXScrnSaver
+      libpng
+      libpulseaudio
+      libvorbis
+      stdenv.cc.cc.lib
+      libkrb5
+      keyutils
+      mangohud
+      winetricks
+      protontricks
+      gtk3
+      gtk3-x11
+    ];
+  };
+  host = config.ooknet.host;
+in
+
+{
+  config = mkIf (elem "gaming" host.function) {
+    hardware.opengl.extraPackages = [ pkgs.gamescope ];
+    services.flatpak.enable = true;
+    programs = {
+      steam = {
+        enable = true;
+        package = steamFix;
+        extraCompatPackages = [ pkgs.proton-ge-bin.steamcompattool ];
+      };
+      gamescope = {
+        enable = true;
+        capSysNice = true;
+      };
+      gamemode = {
+        enable = true;
+        settings = {
+          general = {
+            renice = 15;
+            softrealtime = "auto";
+          };
+           custom = {
+            start = "${pkgs.libnotify}/bin/notify-send 'GameMode started'";
+            end = "${pkgs.libnotify}/bin/notify-send 'GameMode ended'";
+          };
+        };
+      };
+    };
+    networking.firewall = {
+      allowedTCPPorts = [ 3074 ];
+      allowedUDPPorts = [
+        88
+        500
+        3074
+        2075
+        3544
+        4500
+      ];
+    };
+  };
+}
+