{ pkgs, username, ... }: { environment.persistence."/nix/persist" = { users."${username}".directories = [ ".local/share/steam_home" ".local/share/osu" ]; }; environment.systemPackages = with pkgs; [ protonup-qt protontricks unstable.osu-lazer-bin ]; programs.steam = { enable = true; gamescopeSession.enable = true; }; }