Refactor config.py to update PYTHONPATH for CosyVoice TTS imports

config.py

@@ -1,4 +1,5 @@
 import os
+import sys
 import json
 
 import torch
@@ -11,7 +12,8 @@ import torch
 # os.environ['PYTHONPATH'] = f'{os.path.dirname(__file__)}/modules/CosyVoice:{os.environ.get("PYTHONPATH", "")}' # add tabs/audios/modules/CosyVoice to PYTHONPATH
 matcha_tts_path = f'{os.path.dirname(__file__)}/modules/CosyVoice/third_party/Matcha-TTS'
 cosyvoice_path = f'{os.path.dirname(__file__)}/modules/CosyVoice'
-os.environ['PYTHONPATH'] = f'{matcha_tts_path}:{cosyvoice_path}:{os.environ.get("PYTHONPATH", "")}'
+sys.path.append(matcha_tts_path)
+sys.path.append(cosyvoice_path)
 
 
 css = """