[GHC] #14030: Implement the "Derive Lift instances for data types in template-haskell" proposal

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Tue Jul 25 18:25:55 UTC 2017


#14030: Implement the "Derive Lift instances for data types in template-haskell"
proposal
-------------------------------------+-------------------------------------
           Reporter:  RyanGlScott    |             Owner:  (none)
               Type:  task           |            Status:  new
           Priority:  normal         |         Milestone:  8.4.1
          Component:  Template       |           Version:  8.3
  Haskell                            |
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 Back in September 2015, I
 [https://mail.haskell.org/pipermail/libraries/2015-September/026117.html
 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.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14030>
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