[Haskell-cafe] transformers problem: Could not deduce MonadTrans (StateT s) ??
anton.kholomiov at gmail.com
Sat Jun 23 19:26:31 CEST 2012
No, it wants me to define an instance for
(StateT s) which is supposed to be defined
be the authors of the library.
Actually I discovered that I have two libraries
So when I'm doing
import Control.Monad.Trans (0.2.2.0)
I get the error
And when I'm doing
import Control.Monad.Trans.Class (0.3.0.0)
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