style(nixfmt): formatting using nixfmt cli tools

modules/games/global.nix

@@ -1,21 +1,38 @@
-{ config, pkgs, lib, ... }:
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
 
 let
-	lutris = import ./lutris.nix {
-		inherit config pkgs lib;
-	};
-	cfg = config.games;
+  lutris = import ./lutris.nix {
+    inherit config pkgs lib;
+  };
+  cfg = config.games;
 in
 {
-	imports = [
-		lutris
-	];
+  imports = [
+    lutris
+  ];
 
-	options.games = {
-		lutris = lib.mkOption {
-			type = lib.types.bool;
-			default = false;
-			description = "Enable lutris";
-		};
-	};
+  options.games = {
+    steam = {
+      enable = lib.mkOption {
+        type = lib.types.bool;
+        default = false;
+        description = "Enable steam installation";
+      };
+      bp = lib.mkOption {
+        type = lib.types.bool;
+        default = false;
+        description = "Enable the autostart of steam in big picture";
+      };
+    };
+    lutris = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      description = "Enable lutris";
+    };
+  };
 }

modules/games/lutris.nix

@@ -1,15 +1,20 @@
-{ config, pkgs, lib, ... }:
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
 
 let
-	cfg = config.games.lutris;
+  cfg = config.games.lutris;
 in
 {
-	config = lib.mkIf cfg {
-		environment.systemPackages = with pkgs; [
-			wine-staging
-			lutris
-			dxvk
-			vkd3d
-		];
-	};
+  config = lib.mkIf cfg {
+    environment.systemPackages = with pkgs; [
+      wine-staging
+      lutris
+      dxvk
+      vkd3d
+    ];
+  };
 }

modules/games/steam.nix

@@ -0,0 +1,49 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+
+let
+  cfg = config.games.steam;
+in
+{
+  config = lib.mkIf cfg.enable {
+    programs.steam = {
+      enable = true;
+      gamescopeSession.enable = true;
+      extraCompatPackages = with pkgs; [
+        proton-ge-bin
+      ];
+    };
+
+    programs.gamemode.enable = true;
+
+    systemd.user.services."steam-bp" = lib.mkIf cfg.bp {
+      description = "Steam Big Picture auto start";
+      wantedBy = [ "graphical-session.target" ];
+      serviceConfig = {
+        ExecStart = "${pkgs.steam}/bin/steam -tenfoot -fulldesktopres";
+        Restart = "on-failure";
+        Environment = [
+          "SDL_VIDEO_X11_DGAMOUSE=0"
+          "STEAM_USE_OGL=1"
+          "GAMEMODERUNEXEC=1"
+        ];
+      };
+    };
+
+    services = {
+      desktopManager.plasma6.enable = lib.mkIf cfg.bp true;
+      displayManager = lib.mkIf cfg.bp {
+        defaultSession = "plasmax11";
+        sddm.enable = true;
+        autoLogin = {
+          enable = true;
+          user = "raphael";
+        };
+      };
+    };
+  };
+}