anchor.diff:          example = "/private/wireguard_psk";
           type = with types; nullOr str;
           description = ''
  -          File pointing to preshared key as generated by wg pensk. Optional,
  -          and may be omitted. This option adds an additional layer of
  +          File pointing to preshared key as generated by <command>wg pensk</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.
           '';
  
positive.code:         default = false;
          type = types.bool;
          description = ''
            Automatically generate a private key with `wg genkey`,
            at the privateKeyFile location.
          '';
        };
  
  
negative.code:         type = with types; nullOr str;
          default = null;
          description = ''
            Private key file as generated by <command>wg genkey</command>.
          '';
        };
  
  