fails to build with either-5

[Jens Petersen]

For Stackage Nightly:

Building library for magicbane-0.1.3..
[1 of 8] Compiling Magicbane.App    ( library/Magicbane/App.hs, dist/build/Magicbane/App.o )
[2 of 8] Compiling Magicbane.Logging ( library/Magicbane/Logging.hs, dist/build/Magicbane/Logging.o )
[3 of 8] Compiling Magicbane.Metrics ( library/Magicbane/Metrics.hs, dist/build/Magicbane/Metrics.o )
[4 of 8] Compiling Magicbane.Util   ( library/Magicbane/Util.hs, dist/build/Magicbane/Util.o )
[5 of 8] Compiling Magicbane.HTTPClient ( library/Magicbane/HTTPClient.hs, dist/build/Magicbane/HTTPClient.o )

library/Magicbane/HTTPClient.hs:13:1: error:
    Could not find module ‘Control.Monad.Trans.Either’
    Perhaps you meant
      Control.Monad.Trans.Writer (from transformers-0.5.2.0)
      Control.Monad.Trans.Error (from transformers-0.5.2.0)
      Control.Monad.Trans.Reader (from transformers-0.5.2.0)
    Use -v to see a list of the files searched for.
   |
13 | import           Control.Monad.Trans.Either