Delgan enhanced the rommapp/romm repository by delivering both performance and robustness improvements to its 7z archive processing workflow. Using Python and backend development skills, Delgan implemented on-the-fly streaming decompression, allowing data to be read directly from the 7z subprocess rather than extracted to disk, which reduced disk I/O and improved throughput for archive-heavy operations. Additionally, Delgan addressed critical edge cases by refining subprocess management, ensuring reliable extraction even with empty attribute fields and filenames containing whitespace. These targeted changes resulted in more accurate file size tracking and a more dependable archive handling process within the project’s backend infrastructure.