ghc@9.12 for Mac

GHC (Glasgow Haskell Compiler) is the core compilation tool for the Haskell language and the most mainstream implementation of the language. It compiles Haskell source code into executable programs, allowing developers to actually run the functional code they write. For those learning Haskell, it is an unavoidable piece of infrastructure; for developers using Haskell in real projects, it provides a complete support chain from compilation and debugging to performance analysis. Its command-line workflow means it integrates naturally into scripts and build processes, making it suitable for users accustomed to working in the terminal. Whether you are a newcomer just encountering functional programming or an engineer who has long used Haskell, GHC is a tool you need to become familiar with and rely on in daily development.