From b62ca97ccb56fd425aa98d413b0514f08c2b07ad Mon Sep 17 00:00:00 2001
From: Mohammad Rafiq <mohammadrafiq567@gmail.com>
Date: Sun, 27 Apr 2025 20:57:17 +0800
Subject: [PATCH] feat(nixosmodules): add steam module

---
 hosts/nemesis.nix         |  2 ++
 modules/nixos/default.nix |  1 +
 modules/nixos/gaming.nix  | 42 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 45 insertions(+)
 create mode 100644 modules/nixos/gaming.nix

diff --git a/hosts/nemesis.nix b/hosts/nemesis.nix
index 2c3b5a3..b510ec3 100644
--- a/hosts/nemesis.nix
+++ b/hosts/nemesis.nix
@@ -8,4 +8,6 @@
   boot-config.bootloader = "systemd-boot";
   hardware-config.cpu = "amd";
   hardware-config.gpu = "nvidia";
+  gaming.steam.enable = true;
+  gaming.steam.enableGamescope = true;
 }
diff --git a/modules/nixos/default.nix b/modules/nixos/default.nix
index eaee29f..5021abd 100644
--- a/modules/nixos/default.nix
+++ b/modules/nixos/default.nix
@@ -12,6 +12,7 @@ in
     ./boot.nix
     ./hardware.nix
     ./nix-config.nix
+    ./gaming.nix
   ];
 
   options = {
diff --git a/modules/nixos/gaming.nix b/modules/nixos/gaming.nix
new file mode 100644
index 0000000..13d7f21
--- /dev/null
+++ b/modules/nixos/gaming.nix
@@ -0,0 +1,42 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  moduleName = "gaming";
+  cfg = config."${moduleName}";
+in
+{
+  options = {
+    "${moduleName}" = {
+      steam = {
+        enable = lib.mkEnableOption "Enable Steam.";
+        enableGamescope = lib.mkEnableOption "Enable the gamescope compositor.";
+      };
+    };
+  };
+
+  config = lib.mkMerge [
+    (lib.mkIf cfg.steam.enable {
+      programs.steam = {
+        enable = true;
+        remotePlay.openFirewall = true; # Open ports in the firewall for Steam Remote Play
+        protontricks.enable = true;
+        dedicatedServer.openFirewall = true; # Open ports in the firewall for Source Dedicated Server
+        localNetworkGameTransfers.openFirewall = true; # Open ports in the firewall for Steam Local Network Game Transfers
+      };
+      environment.systemPackages = with pkgs; [
+        steam-run
+      ];
+    })
+    (lib.mkIf cfg.steam.enableGamescope {
+      programs.steam.gamescopeSession.enable = true;
+      programs.gamescope = {
+        enable = true;
+        capSysNice = true;
+      };
+    })
+  ];
+}