Does Haskell naturally break off into multi-tiered development?
It seems that Haskell's ethic for putting a gate between I/O and its referentially transparent and strongly-typed functions means that the concept of
multi-tiered architectures is something of a no-brainer.
There are a few web frameworks and web apps in Haskell - HApps, Flippi... do these map naturally and easily onto multiple tiers?
Are there other examples of multiple-tiered apps for Haskell?