modernize code with ruff

pkgs/clan-cli/clan_cli/backups/create.py

@@ -1,13 +1,12 @@
 import argparse
 import json
 import subprocess
-from typing import Optional
 
 from ..errors import ClanError
 from ..machines.machines import Machine
 
 
-def create_backup(machine: Machine, provider: Optional[str] = None) -> None:
+def create_backup(machine: Machine, provider: str | None = None) -> None:
     backup_scripts = json.loads(
         machine.eval_nix(f"nixosConfigurations.{machine.name}.config.clanCore.backups")
     )

pkgs/clan-cli/clan_cli/backups/list.py

@@ -1,13 +1,12 @@
 import argparse
 import pprint
 from pathlib import Path
-from typing import Optional
 
 from ..errors import ClanError
 
 
 def list_backups(
-    flake_dir: Path, machine: str, provider: Optional[str] = None
+    flake_dir: Path, machine: str, provider: str | None = None
 ) -> dict[str, dict[str, list[dict[str, str]]]]:
     dummy_data = {
         "testhostname": {

pkgs/clan-cli/clan_cli/backups/restore.py

@@ -1,6 +1,5 @@
 import argparse
 from pathlib import Path
-from typing import Optional
 
 from ..errors import ClanError
 
@@ -10,7 +9,7 @@ def restore_backup(
     machine: str,
     provider: str,
     backup_id: str,
-    service: Optional[str] = None,
+    service: str | None = None,
 ) -> None:
     if service is None:
         print("would restore backup", machine, provider, backup_id)