Stanislas worked on stabilizing package installation reliability in the qualcomm-linux/meta-qcom repository by addressing a critical issue in the evaluation of DISTRO_FEATURES within the qcom-adreno layer. He identified and corrected invalid negation logic in shell conditionals, replacing the use of 'not' with the proper '!' operator to ensure accurate feature detection during builds. This fix prevented do_package failures when x11 or wayland were absent, reducing user-facing installation errors and post-release maintenance. Stanislas applied his expertise in Linux development, package management, and shell scripting, demonstrating careful debugging and traceability through BitBake and Yocto build logs to resolve the issue.