convert-hf-to-gguf.py: add option to override architecture

Signed-off-by: Giuseppe Scrivano <[email protected]>

convert-hf-to-gguf.py

@@ -2564,6 +2564,10 @@ def parse_args() -> argparse.Namespace:
         "--no-lazy", action="store_true",
         help="use more RAM by computing all outputs before writing (use in case lazy evaluation is broken)",
     )
+    parser.add_argument(
+        "--architecture", type=str, default=None,
+        help="force the architecture to use",
+    )
     parser.add_argument(
         "--model-name", type=str, default=None,
         help="name of the model",
@@ -2619,7 +2623,7 @@ def main() -> None:
     hparams = Model.load_hparams(dir_model)
 
     with torch.inference_mode():
-        model_class = Model.from_model_architecture(hparams["architectures"][0])
+        model_class = Model.from_model_architecture(args.architecture if args.architecture is not None else hparams["architectures"][0])
         model_instance = model_class(dir_model, ftype_map[args.outtype], fname_out, args.bigendian, args.use_temp_file, args.no_lazy)
 
         logger.info("Set model parameters")