refactor(clew): create log file on first write

src/clew/clew.py

@@ -74,6 +74,15 @@ def get_folder(path: Path) -> Path:
     return path
 
 
+class LazyFileHandler(logging.FileHandler):
+    def __init__(self, path: Path, encoding: str) -> None:
+        super().__init__(path, encoding=encoding, delay=True)
+
+    def _open(self):
+        get_folder(Path(self.baseFilename).parent)
+        return super()._open()
+
+
 def relative_to(root: Path, path: Path) -> Path:
     return path.resolve().relative_to(root.resolve())
 
@@ -119,12 +128,12 @@ def extract_archive(
 def configure_logging(output_root: Path) -> None:
     log_level = logging.INFO
     timestamp = datetime.now(UTC).strftime("%Y%m%dT%H%M%SZ")
-    logs_dir = get_folder(output_root / "logs")
+    logs_dir = output_root / "logs"
     log_file = logs_dir / f"{logging.getLevelName(log_level)}-clew-{timestamp}.log"
 
     formatter = logging.Formatter("%(message)s")
 
-    file_handler = logging.FileHandler(log_file, encoding="utf-8")
+    file_handler = LazyFileHandler(log_file, encoding="utf-8")
     file_handler.setFormatter(formatter)
 
     stream_handler = logging.StreamHandler()