Convert your invalid XML to valid XML with the power of TagSoup
Example:
repair :: StringLike s => s -> s
repair "<head><p></head>" -- Outputs "<head><p></p></head>"Example with conduit:
{-# LANGUAGE OverloadedStrings #-}
import Text.XML
import Text.XML.Cursor
import Network.HTTP.Conduit
import Text.HTML2XML
import Data.ByteString.Lazy.Char8 as LB
main = do
str <- fmap repair $ simpleHttp url
LB.putStrLn str
let doc = fromDocument $ parseLBS_ def str
dss = doc $// localNameIs "a" &// content
print dss
localNameIs ln = checkName $ \n -> nameLocalName n == ln
url = "http://www.yesodweb.com/book/xml"
-- Currently failing with errorMessage = "Failed reading: takeWhile1"