nixos-config/system/steam.nix

{
  config,
  pkgs,
  inputs,
  ...
}:
{
  programs.steam.enable = true;
  programs.steam.package = pkgs.steam.override {
    extraLibraries =
      pkgs:
      with config.hardware.opengl;
      if pkgs.hostPlatform.is64bit then
        [ package ] ++ extraPackages
      else
        [ package32 ] ++ extraPackages32;

    extraPkgs =
      pkgs: with pkgs; [
        capitaine-cursors
        bibata-cursors
        mangohud
        xdg-user-dirs
      ];
  };
  environment.systemPackages = with pkgs; [
    protontricks
    bottles
  ];

  programs.dzgui.enable = true;
  programs.dzgui.package = inputs.dzgui-nix.packages.${pkgs.system}.default;
}