Hi Alex,

The problem with Data.Derive is that I now have a pre-processor cycle as
part of my build process. Automatic and universal Data and Typeable
instance deriving should just be built into Haskell.

Not if you use the template haskell support. We don't currently have a
"deriveAll" command, but I'm sure it could be added, which applied a
given definition to every data type in that module.

Thanks

Neil
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