Failed to load interface for ‘System’

Question

Can't import System both with GHC or GHCi

I'm using Ubuntu 18.04.5 LTS and The Glorious Glasgow Haskell Compilation System, version 8.0.2

Can someone help me?

System is not a module. You can think of it as sort of a namespace for other modules, such as System.IO. — Aplet123
There's an example of how to use System.Console.GetOpt here: hackage.haskell.org/package/base-4.14.0.0/docs/… — 4castle

K. A. Buhr K. A. Buhr · Accepted Answer · 2020-12-02T21:41:12

The example linked in the comments appears to work fine on modern GHC versions if you change the list of imports to:

import System.Console.GetOpt
import Control.Monad
import System.IO
import System.Exit
import System.Environment