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Implement the "Derive Lift instances for data types in template-haskell" proposal

Back in September 2015, I proposed using the DeriveLift extension to, well, derive Lift instance for data types in the template-haskell library. The proposal was well received, but I was unable to implement it at the time due to DeriveLift's newness (having only been introduced in GHC 8.0). Now that GHC 8.0 is the oldest version of GHC that we support bootstrapping with, this is no longer an obstacle.

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Trac field Value
Version 8.3
Type Task
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Template Haskell
Test case
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