Ramil Msh built end-to-end support for package collision handling in the aspect-build/rules_py repository, focusing on the PyBinary macro. Using Bazel and Python, Ramil introduced the package_collisions parameter and ensured its propagation from PyBinary to py_venv_link, allowing user-defined collision strategies to be respected at runtime. This technical approach addressed previous issues where collision handling was not honored, reducing build-time failures and aligning behavior with user intent. Ramil manually tested various collision scenarios and documented a test plan to guide future automation, demonstrating a thorough and systematic approach to improving the reliability of Python binary packaging workflows.