[Haskell-cafe] stack problems

David Turner dct25-561bs at mythic-beasts.com
Sun May 28 06:48:18 UTC 2017


Hi,

It looks like you've added `text` to the list of dependencies for the
executable, rather than the library. Try adding it to the `build-depends`
field of the library block in the cabal file instead.

Cheers,

David

On 28 May 2017 07:41, "Dennis Raddle" <dennis.raddle at gmail.com> wrote:

> Trying to learn stack. I'm following the tutorial on this page:
>
> https://docs.haskellstack.org/en/stable/GUIDE/
>
> I built helloworld. Then I modified Lib.hs to include Data.Text.IO, as
> the tutorial specifies. I typed 'stack build' and got the error that the
> text package wasn't installed, as the tutorial says I would. I then
> modified helloworld.cabal to have these lines:
>
>   build-depends:       base
>                      , helloworld
>                      , text
>
> and typed 'stack build' again. I got the exact same  output - an error on
> building Lib.hs, 'Failed to load interface for Data.Text.IO. I checked
> that I really modified al lthe right files and can't find anything I did
> wrong.
>
>
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