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  • Glasgow Haskell Compiler
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  • #1830
Closed
Open
Created Nov 04, 2007 by guest@trac-guest

Automatic derivation of Lift

This feature request was brought up in this template-haskell thread[1]:

There are apparently two implementation alternatives:

  1. Merge Ian's th-lift library[2] 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.

[1] http://www.haskell.org/pipermail/template-haskell/2007-October/000635.html [2] http://hackage.haskell.org/cgi-bin/hackage-scripts/package/th-lift-0.2

Trac metadata
Trac field Value
Version 6.8.1
Type FeatureRequest
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Template Haskell
Test case
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Blocking
CC alfonso.acosta@gmail.com
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