content: import os
  import logging
  from typing import Literal
  from trellis.backend_config import (
      get_attention_backend,
      get_debug_mode,
  )
  import logging
  
  logger = logging.getLogger(__name__)
  
  #ATTN = get_attention_backend()
  BACKEND = get_attention_backend()
  DEBUG = get_debug_mode()
  
  def __from_env():
      """Read current backend configuration"""
      #global ATTN
      global BACKEND
      global DEBUG
      
      # Get current settings from central config
      #ATTN = 
      BACKEND = get_attention_backend()
      DEBUG = get_debug_mode()
      
      print(f"[ATTENTION] Using backend: {BACKEND}")
  
  from .modules import MultiHeadAttention, RotaryPositionEmbedder
  from .full_attn import scaled_dot_product_attention
  
  __all__ = [
      'scaled_dot_product_attention',
      'BACKEND',
      'DEBUG',
      'MultiHeadAttention',
      'RotaryPositionEmbedder'
  ]
  