Stack
Stack is a cross-platform build tool for Haskell projects that manages dependencies, builds, and testing. It provides reproducible builds by using curated package sets (Stackage snapshots) and isolates project environments to avoid conflicts. It simplifies Haskell development by automating tasks like installing GHC (Glasgow Haskell Compiler) and resolving library versions.
Developers should use Stack when working on Haskell projects to ensure consistent builds across different environments and team members, especially in production or collaborative settings. It is ideal for managing complex dependencies in large Haskell applications, as it prevents version conflicts and supports reproducible development workflows through its snapshot system.