anchor.diff:          [Service]
           Environment=TERM=linux
           Environment=LOCALE_ARCHIVE=/run/current-system/sw/lib/locale/locale-archive
  -        ExecStart=@${pkgs.utillinux}/sbin/agetty agetty --login-program ${pkgs.shadow}/bin/login %I 115200,57600,38400,9600
  +        ExecStart=@${pkgs.utillinux}/sbin/agetty agetty --login-program ${pkgs.shadow}/bin/login %I ${speeds}
           Type=idle
           Restart=always
           RestartSec=0
  
positive.code:           Help line printed by mingetty below the welcome line.
            Used by the installation CD to give some hints on
            how to proceed.
          '';
        };
  
  
negative.code:         X-RestartIfChanged=false
        '';
      
      systemd.units."serial-getty@.service".text = let
          speeds = with pkgs.lib; concatStringsSep "," (map toString config.services.mingetty.serialSpeed);
        in ''
          [Unit]
          Description=Serial Getty on %I
          Documentation=man:agetty(8) man:systemd-getty-generator(8)
  