This recent haskell-cafe thread[1] provides a way to implicity give support for automatic derivation of Lift in GHC. Since Data can be derived automatically and there's a way to lift any "Data a => a" it's like having automatic derivation for lift. It's not a substitute of Ian's package (the instace Data a => Lift a is illegal), but it complements it. What do you think about including a function like "liftData :: Data a => a -> ExpQ" in the library? On 11/2/07, Alfonso Acosta wrote:

On 11/2/07, Simon Peyton-Jones wrote:

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It'd be good to check that the Haddock docs for TH.Lift are in good shape.

Well, right now they are inexistent but the library is tiny, that shouldn't be a problem.

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I'll leave this up to you two to finalise.

Let's see what Ian thinks

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(In fact it'd be great if you could improve the Haddock docs for the other TH modules. They are currently laughably bad. And you are clearly an expert!)

I cannot agree more, when I began to use TH I was forced (and I keep doing it) to look at the source comments to check what the AST-types meant.

I cannot promess anything for the short-term, but I'll try to send a documentation patch at some point.