Guillaume Maudoux developed a new command-line interface feature for the tweag/FawltyDeps repository, introducing a --base_path option to specify the package root directory. This addition, implemented in Python, addressed the challenge of resolving Python package structures when source files are provided directly, reducing manual configuration and potential errors. By defaulting to the current directory when the option is not set, Guillaume ensured backward compatibility and a smooth transition for existing workflows. The work demonstrated a strong grasp of configuration management and testing, resulting in clearer package root handling and improved maintainability for both new and existing users of the tool.