Import gives error "Could not find module `Data.List.Split`"

Question

I am using haskell 9.2.4 and I'm trying to import Data.List.Split because I want to use the splitOn function for my code.

GHCi, version 9.2.4: https://www.haskell.org/ghc/  :? for help
ghci> :l Program   -- my program imports Data.List.Split
[1 of 1] Compiling Main             ( Program.hs, interpreted )

Program.hs:1:1: error:
    Could not find module ‘Data.List.Split’
    Use -v (or `:set -v` in ghci) to see a list of the files searched for.
  |
1 | import Data.List.Split
  | ^^^^^^^^^^^^^^^^^^^^^^
Failed, no modules loaded.

This is the error I'm getting when I'm trying to load my program. Earlier I imported Data.List which worked fine for using the filter function.

Update: when I try to import Data.List and Data.Text it now marks my filter function as an error. I am on Mac btw.

Update: when I try to import Data.List and Data.Text it now marks my filter function as an error. I am on mac btw — Snusqx
– Snusqx, Commented Nov 26, 2022 at 12:53

willeM_ Van Onsem · Accepted Answer · 2022-11-26 13:10:55Z

2

The Data.List.Split module is defined in the split package, you thus first install that package, for example with cabal:

cabal install split

If you import Data.Text, then this module exports a (different) filter function, hence that will result in ambiguity. You can for example import Data.Text as T and then work with T.filter if you need that function:

import qualified Data.Text as T

answered Nov 26, 2022 at 13:10

willeM_ Van Onsem

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