#5499: Tagging constructors with record/product phantom type
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Reporter: basvandijk | Owner:
Type: feature request | Status: new
Priority: normal | Milestone:
Component: libraries (other) | Version: 7.2.1
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: None/Unknown
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Comment(by basvandijk):
I will try out Pedro's solution this evening. One question: why can't we
set the `b` to `True` in:
{{{
instance (IsRecord f b) => IsRecord (M1 S c f) b
}}}
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5499#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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