{
  config,
  self,
  pkgs,
  lib,
  ...
}: let
  lastModifiedFile = pkgs.runCommandLocal "formatDate" {} ''
    date --date='@${builtins.toString self.sourceInfo.lastModified}' +'%F %T' > $out
  '';
  lastModified = lib.strings.replaceStrings ["\n"] [""] (
    builtins.readFile lastModifiedFile
  );
in {
  environment.etc.issue = {
    # Friendly greeting on the virtual consoles.
    text = ''
      [?25l[?7l                                           
                ▗▄▄▄       ▗▄▄▄▄    ▄▄▄▖         
                ▜███▙       ▜███▙  ▟███▛         
                 ▜███▙       ▜███▙▟███▛          
                  ▜███▙       ▜██████▛           
           ▟█████████████████▙ ▜████▛     ▟▙     
          ▟███████████████████▙ ▜███▙    ▟██▙    
                 ▄▄▄▄▖           ▜███▙  ▟███▛    
                ▟███▛             ▜██▛ ▟███▛     
               ▟███▛               ▜▛ ▟███▛      
      ▟███████████▛                  ▟██████████▙
      ▜██████████▛                  ▟███████████▛
            ▟███▛ ▟▙               ▟███▛         
           ▟███▛ ▟██▙             ▟███▛          
          ▟███▛  ▜███▙           ▝▀▀▀▀           
          ▜██▛    ▜███▙ ▜██████████████████▛     
           ▜▛     ▟████▙ ▜████████████████▛      
                 ▟██████▙       ▜███▙            
                ▟███▛▜███▙       ▜███▙           
               ▟███▛  ▜███▙       ▜███▙          
               ▝▀▀▀    ▀▀▀▀▘       ▀▀▀▘          
                                                 
       NixOS ${config.system.nixos.label} 
        --------------
      
        last update: ${lastModified}
               date: \d
               time: \t
               ipv4: \4
               ipv6: \6
                tty: \l
      
    '';
  };
}