Developed a feature for the cashapp/hermit-packages repository that introduced PYTHONUSERBASE environment variable support within uv configuration, enabling seamless interchangeability between pip and uv for Python package management. This enhancement focused on environment configuration and package management using HCL, streamlining local development by reducing setup friction and improving compatibility across Python tooling. The work demonstrated a commit-driven approach, emphasizing robust integration of environment variables to accelerate testing and packaging workflows. By addressing cross-tool interoperability, the contribution strengthened developer workflow efficiency and ensured smoother transitions between pip and uv, reflecting a practical understanding of Python environment management and configuration best practices.