Automatic derivation of Lift
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This feature request was brought up in this template-haskell thread:
There are apparently two implementation alternatives:
1) Merge Ian's th-lift library with the mainstream template-haskell library
2) Implement "instance Data a => Lift a" (requires allowing undecidable and overlapping instances) in template-haskell. Since Data can be derived automatically by GHC, such an instance would imply automatic derivation of Lift as well.