March 2026 monthly summary for ghostty-org/ghostty. Key features delivered: (1) Nix Flake Build Input Enhancement by adding a systems input to the flake configuration, enabling explicit multi-system builds. (2) Zig Overlay Dependency Resolution improvement by correcting the dependency resolution path for the Zig overlay, enhancing build determinism. Major bugs fixed: resolve Zig overlay dependency resolution issues that could cause non-deterministic or failing builds; corrected handling of the 'zig follows' behavior to ensure reliable follow of overlays. Overall impact and accomplishments: improved build reproducibility and stability across platforms, reducing build failures and troubleshooting time. The changes streamline configuration and support for multi-system targets, accelerating developer workflows and release readiness. Technologies/skills demonstrated: Nix Flakes configuration, dependency resolution strategies, Zig overlay management, build system instrumentation, and change traceability via commits (e.g., 220d6fd43d1199b160fca3f95a62b4a8c295b4d3).