Hackage is like npm. Anyone can put something up there, but people expect them to be depended on for production stuff. There is another thing called "stackage"

Hackage is like npm. Anyone can put something up there, but people expect them to be depended on for production stuff. There is another thing called "stackage" - it's a curated set of packages from hackage that are known to work together (due to being run in a continuous build environment), but not all packages are on there.