wtf is homebrew-core?

This repository is the central catalog for Homebrew, a popular tool that lets you install software on your Mac from the command line. When you type a command like brew install wget to quickly add a utility or application to your computer, this is the library that tells Homebrew exactly what to download and how to set it up. At a high level, it works like a giant recipe book written in a programming language called Ruby. Instead of containing the actual software files, it holds instructions, or "formulae", for thousands of programs. When you request a specific piece of software, Homebrew reads the corresponding recipe from this catalog, fetches the correct files from the internet, compiles them if necessary, and places the finished application in the right spot on your system. This tool is used by developers, data scientists, and anyone who works in a terminal on macOS. For example, if a developer needs to install a database like PostgreSQL or a tool to convert files between formats, they can run a single command instead of hunting down a website, downloading an installer, and clicking through setup wizards. It makes setting up a new computer or sharing your toolset with a teammate much faster and more consistent. The README is sparse and does not go into detail beyond basic installation commands and links. However, the project itself is notable because it is maintained by a large community of volunteers who constantly update the catalog to point to the latest versions of software. This means users get access to up-to-date tools through a simple, unified interface rather than relying on scattered downloads.