fix: install chatterbox-tts with --no-deps to avoid numpy pin conflict

chatterbox-tts 0.1.6 pins numpy<1.26 and torch==2.6 which are
incompatible with Python 3.12+. Install with --no-deps and list
its sub-dependencies explicitly in requirements.txt.

Also removes HFProgressTracker from chatterbox backend to avoid
'generator didn't stop after throw()' errors from tqdm patching.

Makefile

@@ -48,6 +48,7 @@ setup-python: $(VENV)/bin/activate ## Set up Python virtual environment and depe
 	@echo -e "$(BLUE)Installing Python dependencies...$(NC)"
 	$(PIP) install --upgrade pip
 	$(PIP) install -r $(BACKEND_DIR)/requirements.txt
+	$(PIP) install --no-deps chatterbox-tts
 	@if [ "$$(uname -m)" = "arm64" ] && [ "$$(uname)" = "Darwin" ]; then \
 		echo -e "$(BLUE)Detected Apple Silicon - installing MLX dependencies...$(NC)"; \
 		$(PIP) install -r $(BACKEND_DIR)/requirements-mlx.txt; \

backend/backends/chatterbox_backend.py

@@ -18,7 +18,6 @@ import numpy as np
 from . import TTSBackend
 from ..utils.audio import normalize_audio, load_audio
 from ..utils.progress import get_progress_manager
-from ..utils.hf_progress import HFProgressTracker, create_hf_progress_callback
 from ..utils.tasks import get_task_manager
 
 logger = logging.getLogger(__name__)
@@ -110,10 +109,6 @@ class ChatterboxTTSBackend:
 
         is_cached = self._is_model_cached()
 
-        try:
-            progress_callback = create_hf_progress_callback(model_name, progress_manager)
-            tracker = HFProgressTracker(progress_callback, filter_non_downloads=is_cached)
-
         if not is_cached:
             task_manager.start_download(model_name)
             progress_manager.update_progress(
@@ -124,7 +119,7 @@ class ChatterboxTTSBackend:
                 status="downloading",
             )
 
-            with tracker.patch_download():
+        try:
             device = self._get_device()
             self._device = device
 
@@ -179,11 +174,13 @@ class ChatterboxTTSBackend:
                 "chatterbox-tts package not found. "
                 "Install with: pip install chatterbox-tts"
             )
+            if not is_cached:
                 progress_manager.mark_error(model_name, str(e))
                 task_manager.error_download(model_name, str(e))
             raise
         except Exception as e:
             logger.error(f"Failed to load Chatterbox: {e}")
+            if not is_cached:
                 progress_manager.mark_error(model_name, str(e))
                 task_manager.error_download(model_name, str(e))
             raise

backend/requirements.txt

@@ -21,8 +21,17 @@ qwen-tts>=0.0.5
 linacodec @ git+https://github.com/ysharma3501/LinaCodec.git
 Zipvoice @ git+https://github.com/ysharma3501/LuxTTS.git
 
-# Chatterbox TTS (multilingual voice cloning, includes Hebrew)
-chatterbox-tts>=0.1.0
+# Chatterbox TTS sub-dependencies (chatterbox-tts itself is installed
+# --no-deps in the setup script because it pins numpy<1.26 / torch==2.6
+# which are incompatible with Python 3.12+)
+conformer>=0.3.2
+diffusers>=0.29.0
+omegaconf
+pykakasi
+resemble-perth>=1.0.1
+s3tokenizer
+spacy-pkuseg
+pyloudnorm
 
 # Audio processing
 librosa>=0.10.0

justfile

@@ -38,6 +38,8 @@ setup-python:
     echo "Installing Python dependencies..."
     {{ pip }} install --upgrade pip -q
     {{ pip }} install -r {{ backend_dir }}/requirements.txt
+    # Chatterbox pins numpy<1.26 / torch==2.6 which break on Python 3.12+
+    {{ pip }} install --no-deps chatterbox-tts
     # Apple Silicon: install MLX backend
     if [ "$(uname -m)" = "arm64" ] && [ "$(uname)" = "Darwin" ]; then
         echo "Detected Apple Silicon — installing MLX dependencies..."