Another angle: sometimes XML files are used in Sahara's plugin definitions for older versions. Wait, in OpenStack Kilo, Sahara had XML-based plugin definitions, but later versions moved to YAML. If the user is on an older version, maybe they need that. Let me check. For example, in some OpenStack versions, plugins were defined in XML, but I'm not certain. It's safer to assume YAML for OpenStack Sahara.
If you are searching for this because of a error in QFIL, it usually indicates a communication breakdown between your PC and the phone.
When you use tools like (Qualcomm Flash Image Loader) or QPST , the Sahara protocol manages the initial handshake between your PC and the "dead" phone. The XML files—often named rawprogram0.xml and patch0.xml —act as a map for the flashing tool.
In some advanced or open-source tools like openpst/sahara, a sahara.xml file may be used to define image paths for the tool to process. Common "Sahara Fail" Errors & Solutions