feat(nixos): Steam

modules/nixos/programs/steam/default.nix

@@ -0,0 +1,20 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  cfg = config.marleyos.programs.steam;
+in {
+  options.marleyos.programs.steam.enable = lib.mkEnableOption "steam";
+
+  config = lib.mkIf cfg.enable {
+    programs.steam = {
+      enable = true;
+
+      extraCompatPackages = with pkgs; [
+        proton-ge-bin
+      ];
+    };
+  };
+}

systems/x86_64-linux/nyx/default.nix

@@ -21,6 +21,7 @@ in {
     programs = {
       fish = enabled;
       nh = enabled;
+      steam = enabled;
     };
 
     services = {