ghcup:tldr:56bf4
The command "ghcup install ghc" is used to install the Glasgow Haskell Compiler (GHC) using the ghcup tool.
GHC is a compiler for the Haskell programming language and is required for building and running Haskell programs. Ghcup, short for "GHC Updater", is a tool that simplifies managing different versions of GHC on your system.
When you run the "ghcup install ghc" command, it checks for the latest stable version of GHC available and downloads it onto your machine. It also sets up the necessary environment variables and configurations for GHC to work properly.
By using ghcup, you can easily install multiple versions of GHC side by side on your system, switch between different versions, or even uninstall unused versions. This is particularly useful when working on different projects that require different versions of GHC or when experimenting with new GHC releases.