In December 2024, Alex Montagu focused on enhancing the Elixir build pipeline within the elixir-lang/elixir repository by developing a new Mix task to provide granular recompilation control for specific compilers. Leveraging expertise in Elixir, build tools, and compiler development, Alex refactored the existing reenable logic to integrate with this new task, ensuring consistent behavior across the workflow. Comprehensive tests were added to validate the new functionality across diverse scenarios, improving both reproducibility and flexibility for developers. This work deepened the integration of build tooling and addressed the need for more precise control in Elixir’s compilation process.