Hi, With Stack:
stack ghci --resolver=lts-18.28 --package=random arrows.hs
You can use Stack's script feature to specify resolver and packages directly in the .hs file. See https://www.wespiser.com/posts/2020-02-02-Command-Line-Haskell.html for some examples. Cheers, Sylvain On 16/06/2022 01:39, Lists0 wrote:
Hi all,
a very basic question, that I cannot solve alone: How do I load modules from hackage into ghci ? Say, I have a module arrows.hs :
{-# LANGUAGE Arrows #-}
module Main where import Control.Arrow import Control.Monad import qualified Control.Category as Cat import Data.List import Data.Maybe import System.Random
I get the error in ghci:
% ghci arrows.hs GHCi, version 8.10.6: https://www.haskell.org/ghc/ :? for help [1 of 1] Compiling Main ( arrows.hs, interpreted )
arrows.hs:9:1: error: Could not find module ‘System.Random’ Use -v (or `:set -v` in ghci) to see a list of the files searched for. | 9 | import System.Random | ^^^^^^^^^^^^^^^^^^^^ Failed, no modules loaded. Prelude>
System.Random is in the package "random" from hackage, where the other modules are in the package base.
I cannot find a solution in the doku that works :-(
Thanks for help!
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