Re: new major release of transformers package

2012/3/8 Gábor Lehel :

On Thu, Mar 8, 2012 at 10:18 AM, Michael Snoyman wrote:

...

My solution was to create a new typeclass[2]:

class MonadLift base m | m -> base where    lift :: base a -> m a

Have you seen: http://hackage.haskell.org/package/transformers-base

Sorry, that seems to be similar but different. AFAICT MonadBase actually lifts from the bottom-most, while MonadLift only goes one level down? Confusingly they both use the word 'base' :)