anchor.diff:            default = false;
             description = "
               Whether to enable the anonymous FTP user.
  +          ";
  +        };
  + 
  +        localUsers = mkOption {
  +          default = false;
  +          description = "
  +            Whether to enable FTP for the local users.
             ";
           };
   
  
positive.code:         start script
          cat > /etc/vsftpd.conf <<EOF
          ${yesNoOption anonymousUser "anonymous_enable"}
          ${yesNoOption writeEnable "write_enable"}
          ${yesNoOption anonymousUploadEnable "anon_upload_enable"}
          ${yesNoOption anonymousMkdirEnable "anon_mkdir_write_enable"}
  
negative.code: 
  let 
  
    inherit (config.services.vsftpd) anonymousUser localUsers writeEnable anonymousUploadEnable anonymousMkdirEnable;
    inherit (pkgs) vsftpd;
  
    yesNoOption = p : name :
  