During January 2026, Zack contributed to the nix-community/home-manager repository by developing a feature that enables login-time environment initialization through the new home-manager.startAsUserService option. This work addressed scenarios where user home directories are unavailable until login, improving reliability and reducing manual intervention during user session startup. Zack implemented the solution using Nix, leveraging skills in package management and system configuration to ensure seamless integration with existing workflows. The change was thoroughly documented with a news entry, laying the foundation for broader user-service based initialization strategies. This focused contribution demonstrated depth in addressing edge cases within Nix-based environment management.