  
          os.makedirs(activate_folder, exist_ok=True)
          os.makedirs(deactivate_folder, exist_ok=True)
  
          activate_script = os.path.join(conda_prefix, activate_folder, f"env_vars.sh")
          deactivate_script = os.path.join(conda_prefix, deactivate_folder, f"env_vars.sh")
  
          if os.path.isfile(activate_script):
              # Only create file if it does not already exist. There may be instances where people
              # have created their own scripts, but these should be few and far between and those
              # people should already know what they are doing.
 
</s> remove         elif self.enable_apple:
            backend = "apple_silicon"
 </s> add  </s> remove             selection = input("1: AMD, 2: CPU, 3: NVIDIA, 4: Apple Silicon: ")
 </s> add             selection = input("1: AMD, 2: CPU, 3: NVIDIA, 4: APPLE SILICON: ") </s> remove     - ffmpy==0.2.3 </s> add 
        activate_script = os.path.join(conda_prefix, activate_folder, "env_vars.sh")
        deactivate_script = os.path.join(conda_prefix, deactivate_folder, "env_vars.sh")
  
          os.makedirs(activate_folder, exist_ok=True)
          os.makedirs(deactivate_folder, exist_ok=True)
  
        activate_script = os.path.join(conda_prefix, activate_folder, "env_vars.sh")
        deactivate_script = os.path.join(conda_prefix, deactivate_folder, "env_vars.sh")
        activate_script = os.path.join(conda_prefix, activate_folder, "env_vars.sh")
        deactivate_script = os.path.join(conda_prefix, deactivate_folder, "env_vars.sh")
  
          if os.path.isfile(activate_script):
              # Only create file if it does not already exist. There may be instances where people
              # have created their own scripts, but these should be few and far between and those
              # people should already know what they are doing.
keep keep keep keep replace replace keep keep keep keep keep
 minor cleanup
- Consistent naming for backend selection
- Remove apple-silicon from setup.py (not yet implemented) 
setup.py