diff --git a/.ci/lib/apkbuild_linting.py b/.ci/lib/apkbuild_linting.py
index d16c2e78c..c14050a91 100755
--- a/.ci/lib/apkbuild_linting.py
+++ b/.ci/lib/apkbuild_linting.py
@@ -1,12 +1,12 @@
 #!/usr/bin/env python3
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-import common
 import os
-import sys
 import subprocess
-import tomllib
+import sys
 
+import common
+import tomllib
 
 custom_valid_options = [
     "!pmb:crossdirect",
@@ -63,7 +63,7 @@ if __name__ == "__main__":
         sys.exit(0)
 
     print("Running apkbuild-lint...")
-    print("")
+    print()
 
     ret = 0
     for apkbuild in apkbuilds_filtered:
@@ -73,7 +73,7 @@ if __name__ == "__main__":
         except subprocess.CalledProcessError as exception:
             ret = exception.returncode
 
-    print("")
+    print()
     if ret == 0:
         print("Success")
 
diff --git a/.ci/lib/build_changed_aports.py b/.ci/lib/build_changed_aports.py
index 80641b486..e7cc01186 100755
--- a/.ci/lib/build_changed_aports.py
+++ b/.ci/lib/build_changed_aports.py
@@ -1,18 +1,18 @@
 #!/usr/bin/env python3
 # Copyright 2021 Oliver Smith
 # SPDX-License-Identifier: GPL-3.0-or-later
-import sys
 import os
 import pathlib
+import sys
 
 # Same dir
 import common
 
 # pmbootstrap
 import pmb.core
+import pmb.helpers.pmaports
 import pmb.parse
 import pmb.parse._apkbuild
-import pmb.helpers.pmaports
 from pmb.core.arch import Arch
 from pmb.core.context import get_context
 
diff --git a/.ci/lib/check_changed_versions.py b/.ci/lib/check_changed_versions.py
index 056027a84..55b141aa4 100755
--- a/.ci/lib/check_changed_versions.py
+++ b/.ci/lib/check_changed_versions.py
@@ -4,19 +4,20 @@
 
 import os.path
 import pathlib
-import tempfile
-import sys
 import subprocess
+import sys
+import tempfile
 
 # Same dir
 import common
+import pmb.helpers.logging
 
 # pmbootstrap
 import pmb.parse
 import pmb.parse.version
-import pmb.helpers.logging
 from pmb.core.context import get_context
 
+
 def get_package_contents(package, revision, check=True):
     # Redirect stderr to /dev/null, so git doesn't complain about files not
     # existing in upstream branch for new packages
diff --git a/.ci/lib/check_devices_in_wiki.py b/.ci/lib/check_devices_in_wiki.py
index ee81e1149..a418e34af 100755
--- a/.ci/lib/check_devices_in_wiki.py
+++ b/.ci/lib/check_devices_in_wiki.py
@@ -2,14 +2,15 @@
 # Copyright 2023 Oliver Smith
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-from pathlib import Path
 import argparse
 import sys
 import urllib.request
+from pathlib import Path
 
 # Same dir
 import common
 
+
 def get_devices() -> list[str]:
     """:returns: list of all devices"""
     ret = []
@@ -21,8 +22,7 @@ def get_devices() -> list[str]:
         # devices that have a working mainline kernel. Those are usually
         # unmaintained and therefore might not appear in the wiki. However,
         # the main device should be documented (remove the -downstream suffix).
-        if device.endswith('-downstream'):
-            device = device[:-len('-downstream')]
+        device = device.removesuffix('-downstream')
 
         ret.append(device)
     return sorted(ret)
@@ -120,21 +120,21 @@ def main() -> int:
     if error:
         print("*** Wiki check failed!")
         print("Thank you for porting postmarketOS to a new device! \\o/")
-        print("")
+        print()
         print("Now it's time to add some documentation:")
         print("1) Create a device specific wiki page as described here:")
         print("   https://wiki.postmarketos.org/wiki/Help:Device_Page")
         print("2) Set 'booting = yes' in the infobox of your device page.")
         print("3) Run these tests again with an empty commit in your MR:")
         print("   $ git commit --allow-empty -m 'run tests again'")
-        print("")
+        print()
         print("Please take the time to do these steps. It will make your")
         print("precious porting efforts visible for others, and allow them")
         print("not only to use what you have created, but also to build upon")
         print("it more easily. Many times one person did a port with basic")
         print("functionality, and then someone else jumped in and")
         print("contributed major new features.")
-        print("")
+        print()
         print("NOTE: if you renamed a device in pmaports, rename it in the")
         print("wiki as well and make sure to add it here:")
         print("https://postmarketos.org/renamed")
diff --git a/.ci/lib/common.py b/.ci/lib/common.py
index 663e9a3ef..8d9771f74 100755
--- a/.ci/lib/common.py
+++ b/.ci/lib/common.py
@@ -42,7 +42,7 @@ def all_committed_by_merge_bot():
 def run_pmbootstrap(parameters):
     """ Run pmbootstrap with the pmaports dir as --aports """
     cmd = ["pmbootstrap", "--aports", get_pmaports_dir()] + parameters
-    subprocess.run(cmd, universal_newlines=True, check=True)
+    subprocess.run(cmd, text=True, check=True)
 
 
 @cache
diff --git a/.ci/lib/deviceinfo_linting.py b/.ci/lib/deviceinfo_linting.py
index 2b51b5522..a8bf85e64 100755
--- a/.ci/lib/deviceinfo_linting.py
+++ b/.ci/lib/deviceinfo_linting.py
@@ -2,12 +2,13 @@
 # Copyright 2025 Stefan Hansson
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-import common
 import glob
 import os.path
 import subprocess
 import sys
 
+import common
+
 if __name__ == "__main__":
     if common.commit_message_has_string("[ci:skip-dint]"):
         print("WARNING: not linting deviceinfo files ([ci:skip-dint])")
diff --git a/.ci/lib/generate_build_jobs.py b/.ci/lib/generate_build_jobs.py
index 72eebd6e5..dce5bf3e9 100755
--- a/.ci/lib/generate_build_jobs.py
+++ b/.ci/lib/generate_build_jobs.py
@@ -3,23 +3,22 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 import argparse
+import sys
+import traceback
 from functools import cached_property
 from pathlib import Path
 from typing import Self
-import sys
-import traceback
-
-from jinja2 import Template
-import pmb.parse
-from pmb.parse.deviceinfo import Deviceinfo
-from pmb.types import Apkbuild
-import pmb.helpers.devices
-import pmb.helpers.logging
-import pmb.helpers.package
-from pmb.core.arch import Arch
 
 # Same dir
 import common
+import pmb.helpers.devices
+import pmb.helpers.logging
+import pmb.helpers.package
+import pmb.parse
+from jinja2 import Template
+from pmb.core.arch import Arch
+from pmb.parse.deviceinfo import Deviceinfo
+from pmb.types import Apkbuild
 
 
 class Device:
diff --git a/.ci/lib/kconfig.py b/.ci/lib/kconfig.py
index 3eae5eab7..e6fee1c71 100755
--- a/.ci/lib/kconfig.py
+++ b/.ci/lib/kconfig.py
@@ -29,46 +29,46 @@ def check_kconfig_all():
 
 
 def show_error(last_failed):
-    print("")
+    print()
     print("---")
-    print("")
+    print()
     print("Please adjust your kernel config. This is required for getting your"
           " patch merged.")
-    print("")
+    print()
     print("Edit your kernel config:")
     print(f"  pmbootstrap kconfig edit {last_failed}")
-    print("")
+    print()
     print("Test this kernel config again:")
     print(f"  pmbootstrap kconfig check {last_failed}")
-    print("")
+    print()
     print("Run this check again (on all kernels you modified):")
     print("  pmbootstrap ci kconfig")
-    print("")
+    print()
     print("---")
-    print("")
+    print()
 
 
 def show_error_all():
-    print("")
+    print()
     print("---")
-    print("")
+    print()
     print("Please adjust the failed kernel configs. This is required for")
     print("getting your patch merged.")
-    print("")
+    print()
     print("If a kernel in the testing category failed, and fixing is too much")
     print("effort, remove 'pmb:kconfigcheck-community' from the APKBUILD.")
-    print("")
+    print()
     print("Edit a kernel config:")
     print("  pmbootstrap kconfig edit <PACKAGE NAME>")
-    print("")
+    print()
     print("Test a specific kernel config again:")
     print("  pmbootstrap kconfig check <PACKAGE NAME>")
-    print("")
+    print()
     print("Run this check again (on all kernels you modified):")
     print("  pmbootstrap ci kconfig")
-    print("")
+    print()
     print("---")
-    print("")
+    print()
 
 
 if __name__ == "__main__":
diff --git a/.ci/testcases/conftest.py b/.ci/testcases/conftest.py
index 0f3ecaf5a..70474a55f 100644
--- a/.ci/testcases/conftest.py
+++ b/.ci/testcases/conftest.py
@@ -2,13 +2,15 @@
 # Copyright 2021 Oliver Smith
 # SPDX-License-Identifier: GPL-3.0-or-later
 
+import os
 from pathlib import Path
+
+import pmb.config
 import pmb.parse
+import pytest
 from pmb.helpers.args import init as init_args
 from pmb.types import PmbArgs
-import pmb.config
-import pytest
-import os
+
 
 @pytest.fixture(scope="session", autouse=True)
 def args(request):
diff --git a/.ci/testcases/test_device.py b/.ci/testcases/test_device.py
index 35d2a8993..1133d44b7 100644
--- a/.ci/testcases/test_device.py
+++ b/.ci/testcases/test_device.py
@@ -5,8 +5,8 @@
 
 import pmb.parse
 import pmb.parse._apkbuild
-from pmb.core.pkgrepo import pkgrepo_default_path, pkgrepo_iglob
 from pmb.core.arch import Arch
+from pmb.core.pkgrepo import pkgrepo_default_path, pkgrepo_iglob
 
 # Don't complain if these nicknames are the only maintainers of an APKBUILD,
 # because they are actually a group of people
diff --git a/.ci/testcases/test_source.py b/.ci/testcases/test_source.py
index 8c2361775..0a856627e 100644
--- a/.ci/testcases/test_source.py
+++ b/.ci/testcases/test_source.py
@@ -7,10 +7,10 @@ import glob
 import logging
 import os
 
+import pmb.helpers.repo
 import pmb.parse
 import pmb.parse._apkbuild
 import pmb.parse.apkindex
-import pmb.helpers.repo
 from pmb.core.pkgrepo import pkgrepo_iter_package_dirs, pkgrepo_relative_path
 
 
@@ -30,7 +30,7 @@ def parse_source_from_checksums(apkbuild_path):
     ret = {}
 
     with open(apkbuild_path, encoding="utf-8") as handle:
-        for line in handle.readlines():
+        for line in handle:
             # Find start
             if not in_block:
                 if line.startswith(start):
@@ -51,12 +51,10 @@ def parse_source_from_checksums(apkbuild_path):
                                  f" 'pmbootstrap checksum': {apkbuild_path}")
 
             # Cut off 'sha512sums="' if the first checksum is in that line
-            if checksum.startswith(start):
-                checksum = checksum[len(start):]
+            checksum = checksum.removeprefix(start)
 
             # Find end
-            if filename.endswith('"'):
-                filename = filename[:-1]
+            filename = filename.removesuffix('"')
 
             ret[filename] = checksum
     return ret
diff --git a/.ci/testcases/test_systemd.py b/.ci/testcases/test_systemd.py
index e3b2f0474..743148089 100644
--- a/.ci/testcases/test_systemd.py
+++ b/.ci/testcases/test_systemd.py
@@ -3,10 +3,10 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 import logging
 import os
+from pathlib import Path
 
 import pmb.parse
 from pmb.core.context import get_context
-from pathlib import Path
 
 
 def test_systemd_stage0_version():