Improve handling of NSIS archives in debloat (#55)

* Improve handling of NSIS archives in debloat

karton/archive_extractor/archive_extractor.py

@@ -84,11 +84,15 @@ def log_message_wrapped(message: str, *args, **kwargs) -> None:
 
             # debloat can sometimes unpack NSIS installer archives but we're interested
             # only in the installer script
-            for f_name in (filename, "Setup.NSIS"):
-                unpacked_file = Path(tmp_dir) / f_name
-
-                if unpacked_file.exists() and unpacked_file.stat().st_size:
-                    return (f_name, unpacked_file.read_bytes())
+            for unpacked_file in Path(tmp_dir).rglob("*"):
+                if unpacked_file.is_dir():
+                    continue
+
+                if (
+                    unpacked_file.name == filename
+                    or unpacked_file.name.lower() == "setup.nsis"
+                ):
+                    return (unpacked_file.name, unpacked_file.read_bytes())
 
         self.log.warning("Output file is empty - failed to debloat file")
         return None