Andrew Bastin developed and integrated the AMP.nvim Vim plugin into the NixOS/nixpkgs repository, enabling users to install the plugin seamlessly through the Vim package manager. He authored a Nix expression to automate building and managing the plugin, specifying GitHub as the source and ensuring proper registration within the available Vim plugins list. This work leveraged his skills in Nix and package management, focusing on reproducibility and maintainability within the Nix ecosystem. Over the course of the month, Andrew concentrated on feature delivery, demonstrating a methodical approach to open source contribution, though the scope was limited to a single feature addition.