Can not load a file that uses standard libraries in haskell

Question

Hi I use GHCI and can normally load my files. Now I need to load a file that uses random. I get this error.

Chatterbot.hs:3:1: error:
    Could not find module ‘         


        

Answer 1

The System.Random module is part of the random package, not of the base package. You thus should install it. If you for example use cabal, you can install it with cabal install random.

If you use Haskell stack for example, you can add it to your package-name.cabal file:

  -- …
  build-depends:
      base >=4.7 && <5
    , random >=1.0 && <2