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Resolve the overlapping IsLabel conflict with generic-lens #41

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Merged
int-index merged 4 commits into from
Apr 3, 2026
Merged

Resolve the overlapping IsLabel conflict with generic-lens #41

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f9735fe
add: `OVERLAPPING` pragma to `Param` `IsLabel` instance
thelissimus Apr 1, 2026
b2ee6f9
add: `Data.Generics.Lens` import test
thelissimus Apr 3, 2026
4b974b3
add: comment about why `OVERLAPPING` is needed
thelissimus Apr 3, 2026
d0b553c
add: import note comment for the test
thelissimus Apr 3, 2026
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2 changes: 1 addition & 1 deletion src/Named/Internal.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -51,7 +51,7 @@ instance (name ~ name', a ~ a', InjValue f) => IsLabel name (a -> NamedF f a' na

newtype Param p = Param p

instance (p ~ NamedF f a name, InjValue f) => IsLabel name (a -> Param p) where
instance {-# OVERLAPPING #-} (p ~ NamedF f a name, InjValue f) => IsLabel name (a -> Param p) where
fromLabel a = Param (fromLabel @name a)
{-# INLINE fromLabel #-}

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