diff --git a/backend/SystemUpdater/Core/OriginFilter.py b/backend/SystemUpdater/Core/OriginFilter.py
index 41d69de..0d5d8ea 100644
--- a/backend/SystemUpdater/Core/OriginFilter.py
+++ b/backend/SystemUpdater/Core/OriginFilter.py
@@ -1,6 +1,4 @@
 #!/usr/bin/python3
-
-from types import coroutine
 import apt
 import apt_pkg
 import fnmatch
@@ -13,22 +11,13 @@ import string
 import subprocess
 import json
 try:
-    from typing import AbstractSet, DefaultDict, Dict, Iterable, List
-    # AbstractSet  # pyflakes
-    # DefaultDict  # pyflakes
-    # Dict  # pyflakes
-    # Iterable  # pyflakes
-    # List  # pyflakes
-    from typing import Set, Tuple, Union
-    # Set  # pyflakes
-    # Tuple  # pyflakes
+    from typing import List
+    from typing import Union
 except ImportError:
     pass
 
 from gettext import gettext as _
 
-import apt
-import apt_pkg
 SYSTEM_UPDATER_CORE_LIB_PATH="/usr/share/kylin-system-updater/"
 sys.path.append(SYSTEM_UPDATER_CORE_LIB_PATH)
 from SystemUpdater.Core.utils import get_config_patch
diff --git a/backend/setup.cfg b/backend/setup.cfg
index f5ba309..a9eefe5 100644
--- a/backend/setup.cfg
+++ b/backend/setup.cfg
@@ -11,5 +11,5 @@ formats = bztar
 [nosetests]
 match=test
 
-[install]
-skip-build=0
+# [install]
+# skip-build=0