refactor: move steam configuration to guz home configuration.nix

home/guz/configuration.nix

@@ -1,4 +1,8 @@
-{lib, ...}: {
+{
+  lib,
+  pkgs,
+  ...
+}: {
   # Home-manager configurations for when it is used as a NixOS module.
 
   imports = [
@@ -6,8 +10,18 @@
   ];
 
   home-manager.users.guz = import ./default.nix;
+
+  # Steam
+  programs.steam.enable = true;
+  programs.steam.gamescopeSession.enable = true;
+  programs.steam.extraCompatPackages = with pkgs; [
+    proton-ge-bin
+  ];
+
   nixpkgs.config.allowUnfreePredicate = pkg:
     builtins.elem (lib.getName pkg) [
       "davinci-resolve"
+      "steam"
+      "steam-unwrapped"
     ];
 }

hosts/battleship/configuration.nix

@@ -23,13 +23,6 @@
     #wireless.enable = lib.mkForce true;
   };
 
-  # Steam (cannot be [properly] installed just in one user)
-  programs.steam.enable = true;
-  programs.steam.gamescopeSession.enable = true;
-  programs.steam.extraCompatPackages = with pkgs; [
-    proton-ge-bin
-  ];
-
   # Xbox Controller driver
   hardware.xone.enable = true;
 
@@ -48,8 +41,6 @@
   nixpkgs.config.allowUnfreePredicate = pkg:
     builtins.elem (lib.getName pkg) [
       "megasync"
-      "steam"
-      "steam-unwrapped"
       "xow_dongle-firmware"
     ];