[Haskell-cafe] Combining LoggingT with another library's monad

[Tom Ellis]

On Wed, Sep 24, 2014 at 04:08:08PM +0100, Tom Ellis wrote:
> On Wed, Sep 24, 2014 at 10:50:05AM -0400, Joe Fiorini wrote:
> > I added LoggingT to the top of my monad stack, but ran into lots of
> > problems and moved the LoggingT type to one of my route handlers (you
> > can see my latest attempt & the compiler error here
> > https://gist.github.com/joefiorini/9e89bdf86e28e6b98bf0).
> 
> Don't you want `lift` instead of `return` in `handleHome`?

`lift` is in `Control.Monad.Trans.Class`, by the way.