@@ 36,7 36,7 @@ enum qso_ns {
 };
 
 /* pack & unpack whole struct qso */
-extern struct buffer *qso_pack_hlq(const struct qso *qso);
+extern struct buffer *qso_pack_hlq(const struct qso *qso, int ver);
 extern int qso_unpack_hlq(struct qso *qso, const void *buf, size_t len);
 
 /* partial parsing helpers */

          

@@ 81,9 81,9 @@ static const char *get_ns_name(enum qso_
 	panic("unknown hlq namespace %d", ns);
 }
 
-static int hlq_append_header(struct buffer *buf, const struct xuuid *uuid)
+static int hlq_append_header(struct buffer *buf, const struct xuuid *uuid,
+			     int ver)
 {
-	const int ver = HLQ_VERSION_CUR;
 	const uint64_t now = gettime();
 	char id[XUUID_PRINTABLE_STRING_LENGTH];
 	char rest[32];

          
@@ 320,8 320,8 @@ static int hlq_append_kv_blob(struct buf
 	return buffer_append_cstr(buf, "blobend\n");
 }
 
-static int hlq_append_kv(struct buffer *buf, enum qso_ns ns, const char *key,
-			 struct val *val)
+static int hlq_append_kv(struct buffer *buf, int ver, enum qso_ns ns,
+			 const char *key, struct val *val)
 {
 	if (!val)
 		return hlq_append_kv_null(buf, ns, key);

          
@@ 349,7 349,7 @@ static int hlq_append_kv(struct buffer *
 	      get_ns_name(ns), key, val->type, val_typename(val->type));
 }
 
-struct buffer *qso_pack_hlq(const struct qso *qso)
+struct buffer *qso_pack_hlq(const struct qso *qso, int ver)
 {
 	const struct {
 		enum qso_ns ns;

          
@@ 364,13 364,16 @@ struct buffer *qso_pack_hlq(const struct
 	size_t i, j;
 	int ret;
 
+	if (ver == HLQ_VERSION_USE_DEFAULT)
+		ver = HLQ_VERSION_CUR;
+
 	time_set_now(&now);
 
 	buf = buffer_alloc(1024);
 	if (IS_ERR(buf))
 		return buf;
 
-	ret = hlq_append_header(buf, &qso->uuid);
+	ret = hlq_append_header(buf, &qso->uuid, ver);
 	if (ret)
 		goto err;
 

          
@@ 386,7 389,7 @@ struct buffer *qso_pack_hlq(const struct
 		struct val *val = (v); \
 		int ret; \
 		\
-		ret = hlq_append_kv((buf), (ns), (k), val); \
+		ret = hlq_append_kv((buf), (ver), (ns), (k), val); \
 		val_putref(val); \
 		ret; \
 	})

          

@@ 95,7 95,7 @@ int qso_save(const struct qso *qso, int 
 
 	ASSERT(!xuuid_is_null(&qso->uuid));
 
-	buf = qso_pack_hlq(qso);
+	buf = qso_pack_hlq(qso, HLQ_VERSION_USE_DEFAULT);
 	if (IS_ERR(buf))
 		return PTR_ERR(buf);