PatchSet only serializes patches to the file.

base_patch_generator/src/main.rs

@@ -49,8 +49,7 @@ fn main() -> Result<(), anyhow::Error> {
     patches.add_patches(rom_patches);
 
     println!("Writing output file {}", output_path);
-    let out_file = File::create(&output_path)?;
-    serde_json::to_writer(out_file, &patches)?;
+    patches.save_to_file(Path::new(&output_path))?;
 
     Ok(())
 }