Not compatible with `aeson > 2.0.0.0` about http-client HOT 1 OPEN

It seems I used an older/intermediate version from hackage (>= 2.2.0 && <2.3.7) . Now I referenced it directly from github and it works. Anyway, I guess these newer versions won't work anymore with aeson <2.x.x (though the dependency constraint of the aeson specifies that it is allowed ) since there will be an ambiguity on which Data.Aeson.Parsec to be used (from aeson or attoparsec-aeson).

maybe PackageImports extension should be used instead

{-# LANGUAGE PackageImports      #-}
.....
#ifdef VERSION_aeson
import Data.Aeson (FromJSON (..), Value)
import "attoparsec-aeson"Data.Aeson.Parser (json')
.....
#endif

from http-client.