Update preprocess/tools/lyric_transcription.py

preprocess/tools/lyric_transcription.py

@@ -2,7 +2,9 @@
 # https://huggingface.co/nvidia/parakeet-tdt-0.6b-v2
 import os
 import re
+import sys
 import time
+import traceback
 from typing import Any, Dict, List, Tuple
 
 import librosa
@@ -134,10 +136,13 @@ class _ASREnModel:
     def __init__(self, model_path: str, device: str):
         try:
             import nemo.collections.asr as nemo_asr  # type: ignore
-        except Exception as e:  # pragma: no cover
+        except Exception as e:
+            # Print the actual error causing the import failure
+            print(f"[lyric transcription] Failed to import nemo.collections.asr: {e}", file=sys.stderr)
+            traceback.print_exc()
             raise ImportError(
-                "NeMo (nemo_toolkit) is required for ASR English but is not available in this Python env. "
-                "Install it in the active environment, then retry."
+                "NeMo (nemo_toolkit) is required for ASR English but could not be imported. "
+                "See the log above for details."
             ) from e
 
         self.model = nemo_asr.models.ASRModel.restore_from(