added steam module

flake.nix

@@ -34,6 +34,7 @@
           _1password = config._1password;
           docker = config.docker;
           graphical = config.graphical;
+          steam = config.steam;
         }
       ] ++ config.extraImports;
 
@@ -51,6 +52,10 @@
           "1password-cli"
           "discord"
           "spotify"
+          "steam"
+          "steam-original"
+          "steam-unwrapped"
+          "steam-run"
           "sublimetext4"
           "vscode"
           "vscode-extension-mhutchie-git-graph"

homeManagerModules/steam.nix

@@ -0,0 +1,10 @@
+{ config, pkgs, lib, ... }:
+{
+  programs.steam = lib.mkIf config.steam {
+    enable = true;
+    gamescopeSession.enable = true;
+    remotePlay.openFirewall = true; # Open ports in the firewall for Steam Remote Play
+    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
+  };
+}

nixosModules/options.nix

@@ -65,4 +65,10 @@
     default = false;
     description = "Whether this system has a graphical environment";
   };
+
+  options.steam = lib.mkOption {
+    type = lib.types.bool;
+    default = false;
+    description = "Whether this system has Steam installed";
+  };
 }