diff --git a/src/borg/archiver/_common.py b/src/borg/archiver/_common.py
index 6c04f1667..a6d3e57ac 100644
--- a/src/borg/archiver/_common.py
+++ b/src/borg/archiver/_common.py
@@ -1,4 +1,3 @@
-import argparse
 import functools
 import os
 import textwrap
@@ -211,7 +210,8 @@ def with_other_repository(manifest=False, cache=False, compatibility=None):
                 acceptable_versions = (1, 2) if v1_or_v2 else (3,)
                 if repository.version not in acceptable_versions:
                     raise Error(
-                        f"This borg version only accepts version {' or '.join(acceptable_versions)} repos for --other-repo."
+                        f"This borg version only accepts version {' or '.join(acceptable_versions)} "
+                        f"repos for --other-repo."
                     )
                 kwargs["other_repository"] = repository
                 if manifest or cache:
diff --git a/src/borg/crypto/keymanager.py b/src/borg/crypto/keymanager.py
index fe5050f55..63335c445 100644
--- a/src/borg/crypto/keymanager.py
+++ b/src/borg/crypto/keymanager.py
@@ -3,12 +3,7 @@ import pkgutil
 import textwrap
 from hashlib import sha256
 
-from borgstore.store import ObjectNotFound as StoreObjectNotFound
-
 from ..helpers import Error, yes, bin_to_hex, hex_to_bin, dash_open
-from ..manifest import Manifest, NoManifestError
-from ..repository3 import Repository3
-from ..repository import Repository
 from ..repoobj import RepoObj
 
 
diff --git a/src/borg/testsuite/cache.py b/src/borg/testsuite/cache.py
index 28846d0ad..b9959687b 100644
--- a/src/borg/testsuite/cache.py
+++ b/src/borg/testsuite/cache.py
@@ -1,8 +1,5 @@
-import io
 import os.path
 
-from ..helpers.msgpack import packb
-
 import pytest
 
 from .hashindex import H