Build failure with aeson-2.0.2.0

[andreasabel]

Building executable 'hackage-cli' for hackage-cli-0.1.0.0..

src/IndexShaSum.hs:117:55: error:
    • Couldn't match type ‘Data.Aeson.KeyMap.KeyMap J.Value’
                     with ‘HM.HashMap Data.Text.Internal.Text J.Value’
      Expected type: J.Object -> J.Parser [(ByteString, ByteString)]
        Actual type: HM.HashMap Data.Text.Internal.Text J.Value
                     -> J.Parser [(ByteString, ByteString)]
    • In the second argument of ‘J.withObject’, namely ‘go2’
      In a stmt of a 'do' block:
        J.withObject "PackageJson.signed.targets" go2 targets

haskell/aeson#881 can be scraped for information on how to fix this.