Worked on stabilizing URL construction in the JetBrains/rules_python repository, focusing on backend development and testing using Python and Bazel. Addressed a bug where index URLs with trailing slashes resulted in empty path segments, which previously led to malformed URLs. Developed and integrated a helper function to strip empty path segments, then refactored the codebase to utilize this new utility for consistent URL normalization. This targeted fix improved the reliability and cleanliness of environment variable handling related to URLs. The work laid a foundation for future enhancements in URL hygiene, emphasizing maintainable code and robust backend infrastructure within the project.