During December 2025, Sandro focused on improving session stability in the nix-community/home-manager repository by addressing a race condition affecting EasyEffects during Wayland logins. Using Nix, NixOS, and systemd, Sandro introduced deterministic startup sequencing by adding systemd ordering dependencies, ensuring EasyEffects only starts after the graphical session is ready. This approach eliminated crashes caused by premature service initialization and improved logout handling by declaring shutdown order with systemd PartOf. The solution was validated on NixOS 25.11 with GNOME 49, demonstrating reduced login failures and a smoother user experience. Sandro’s work provides a reusable pattern for managing service dependencies.