diff --git a/nixos/lib/test-driver/src/test_driver/__init__.py b/nixos/lib/test-driver/src/test_driver/__init__.py
index 42b6d29b767148..1c0793aa75a5f4 100755
--- a/nixos/lib/test-driver/src/test_driver/__init__.py
+++ b/nixos/lib/test-driver/src/test_driver/__init__.py
@@ -145,7 +145,7 @@ def main() -> None:
             tic = time.time()
             driver.run_tests()
             toc = time.time()
-            logger.info(f"test script finished in {(toc-tic):.2f}s")
+            logger.info(f"test script finished in {(toc - tic):.2f}s")
 
 
 def generate_driver_symbols() -> None:
diff --git a/nixos/lib/test-driver/src/test_driver/machine.py b/nixos/lib/test-driver/src/test_driver/machine.py
index c423ad8a3fc07d..b554f73167794a 100644
--- a/nixos/lib/test-driver/src/test_driver/machine.py
+++ b/nixos/lib/test-driver/src/test_driver/machine.py
@@ -702,8 +702,7 @@ def wait_for_qmp_event(
 
     def get_tty_text(self, tty: str) -> str:
         status, output = self.execute(
-            f"fold -w$(stty -F /dev/tty{tty} size | "
-            f"awk '{{print $2}}') /dev/vcs{tty}"
+            f"fold -w$(stty -F /dev/tty{tty} size | awk '{{print $2}}') /dev/vcs{tty}"
         )
         return output
 
diff --git a/pkgs/by-name/ru/ruff/package.nix b/pkgs/by-name/ru/ruff/package.nix
index 223f777357c8ea..b9fd33fc131958 100644
--- a/pkgs/by-name/ru/ruff/package.nix
+++ b/pkgs/by-name/ru/ruff/package.nix
@@ -17,17 +17,17 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "ruff";
-  version = "0.8.6";
+  version = "0.9.0";
 
   src = fetchFromGitHub {
     owner = "astral-sh";
     repo = "ruff";
     tag = version;
-    hash = "sha256-9YvHmNiKdf5hKqy9tToFSQZM2DNLoIiChcfjQay8wbU=";
+    hash = "sha256-OAhjatPzwvLT3HyXYPzaL5pAC5CH75CyMmFo0c4726I=";
   };
 
   useFetchCargoVendor = true;
-  cargoHash = "sha256-aTzTCDCMhG4cKD9wFNHv6A3VBUifnKgI8a6kelc3bAM=";
+  cargoHash = "sha256-vroKiwouk2E2WYB/B+8zszXqer5pENDYrxcrCQ17mF0=";
 
   nativeBuildInputs = [ installShellFiles ];