From 757977b80c25a02580ee71a03090a36aac31b949 Mon Sep 17 00:00:00 2001
From: Hollow Man <hollowman@hollowman.ml>
Date: Mon, 28 Dec 2020 00:41:59 +0800
Subject: [PATCH] Fix 'dnf.history' has no attribute 'open_history'

'open_history' has been deprecated since dnf 3.0.1 in PR 1043

Signed-off-by: Hollow Man <hollowman@hollowman.ml>
---
 python/dnfdaemon/server/__init__.py | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/python/dnfdaemon/server/__init__.py b/python/dnfdaemon/server/__init__.py
index f13ab00..f49320f 100644
--- a/python/dnfdaemon/server/__init__.py
+++ b/python/dnfdaemon/server/__init__.py
@@ -699,12 +699,10 @@ class DnfDaemonBase(dbus.service.Object, DownloadCallback):
             result = (False, ['Transaction not found'])
         else:
             old = old[0]
-            history = dnf.history.open_history(self.base.history)
+            mobj = dnf.db.history.MergedTransactionWrapper(old)
             try:
                 # FIXME: Base.history_undo_operations is not public api
-                #print(len(history.transaction_nevra_ops(old.tid)))
-                self.base._history_undo_operations(
-                     history.transaction_nevra_ops(old.tid), old.tid)
+                self.base._history_undo_operations(mobj, old.tid)
                 #print(self.get_transaction())
             except dnf.exceptions.PackagesNotInstalledError as err:
                 result = (False, ['An operation cannot be undone : %s' %
-- 
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