This particular module comes from a separate package. By default all modules you use happen to be in the base package, which ships with ghc. To use other libraries you must make a proper project which tells ghc which libraries you are using. For example, the digits package uses this cabal file at http://hackage.haskell.org/package/digits-0.3.1/digits.cabal You can find more information about how to start a package from scratch here https://www.haskell.org/cabal/users-guide/developing-packages.html On Mon, Nov 18, 2019 at 7:31 AM Alexander Chen wrote:

Hi All,

This is my first 'post' not quite sure if I am doing it right.

I have a question about the importing of modules that are available on the Hackage.Haskell site: http://hackage.haskell.org/package/digits

if I write this in my wordpad and then load it to GCI i get the following error:

chapter4.hs:1:1: error: Could not find module ‘Data.Digits’ Perhaps you meant Data.Bits (from base-4.12.0.0) Use -v to see a list of the files searched for. | 1 | import Data.Digits | ^^^^^^^^^^^^^^^^^^

However if I load Data.Char than it loads fine.

What am I doing wrong?

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