Add a utility for writing a barebones config file

src/accelerate/utils/other.py

@@ -122,8 +122,10 @@ def write_basic_config(mixed_precision="no", save_location: str = default_json_c
     Args:
         mixed_precision (`str`, *optional*, defaults to "no"):
             Mixed Precision to use. Should be one of "no", "fp16", or "bf16"
-        save_location (`str`, *optional*, defaults to "~/.cache/huggingface/accelerate/default_config.yaml"):
-            Optional custom save location. Should be passed to `--config_file` when using `accelerate launch`.
+        save_location (`str`, *optional*, defaults to `default_json_config_file`):
+            Optional custom save location. Should be passed to `--config_file` when using `accelerate launch`. Default
+            location is inside the huggingface cache folder as default_config.yaml, can be overriden by setting the 
+            `HF_HOME` environmental variable.
     """
     path = Path(save_location)
     path.parent.mkdir(parents=True, exist_ok=True)