#3012: A little deriving for GADTs
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Reporter: guest | Owner:
Type: feature request | Status: new
Priority: normal | Milestone: 6.12.1
Component: Compiler | Version: 6.10.1
Severity: minor | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Os: Unknown/Multiple
Architecture: Unknown/Multiple |
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Comment (by FSalad):
Replying to [comment:1 simonpj]:
> So perhaps we should accept ANY data type (GADT or whatever) with
standalone deriving, and say "it's your fault" if the derived code doesn't
typecheck?
Sounds like a good idea. I've written several completely boilerplate
instances for GADTs recently and this would have been very convenient :) I
wouldn't find "it's your fault"-type behaviour unintuitive for
StandaloneDeriving.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3012#comment:5>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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