How to convert from lazy text to non-lazy text?

Question

I am new to Haskell, so this may be a trivial problem. I am seeing an error message that says

Couldn't match expected type 'Data.Text.Lazy.Internal.Text'
with actual type 'Data.Text.Internal.Text'

and I think the problem is that the actual type is Data.Text.Text and it expects lazy text. How can I convert one to the other?

EDIT:

here is a simplified code that gives this error.

{-# LANGUAGE OverloadedStrings #-}

import Data.Text.Lazy.Encoding
import Network.Mail.Mime
import Yesod

data FormData = FormData { dataField :: Textarea } deriving Show

part d = Part {
    partType = "text/plain; charset=utf-8"
    , partEncoding = None
    , partFilename = Nothing
    , partContent = encodeUtf8 $ unTextarea $ dataField d
    , partHeaders = []
    }

main = return ()

basically I have a yesod form with a textarea input element and I want to e-mail the contents of the textarea.

Answer 1

toStrict from Data.Text.Lazy would do what you ask for (convert lazy to strict).