anchor.diff:          type = with types; nullOr str;
           default = null;
           description = ''
  -          Private key file as generated by wg genkey.
  +          Private key file as generated by <command>wg genkey</command>.
           '';
         };
   
  
positive.code:         type = with types; nullOr str;
          default = null;
          description = ''
            Base64 private key generated by wg genkey.
  
            Warning: Consider using privateKeyFile instead if you do not
            want to store the key in the world-readable Nix store.
  
negative.code:         example = "rVXs/Ni9tu3oDBLS4hOyAUAa1qTWVA3loR8eL20os3I=";
          type = with types; nullOr str;
          description = ''
            Base64 preshared key generated by <command>wg genpsk</command>.
            Optional, and may be omitted. This option adds an additional layer of
            symmetric-key cryptography to be mixed into the already existing
            public-key cryptography, for post-quantum resistance.
  
  