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Default codecs are not picked up for tagged types (even when in scope) #3

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vpavkin opened this issue Jun 18, 2018 · 0 comments
Open

Default codecs are not picked up for tagged types (even when in scope) #3

vpavkin opened this issue Jun 18, 2018 · 0 comments
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auto magnolia Issue depends on a fix in magnolia repo

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@vpavkin
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vpavkin commented Jun 18, 2018 

trait Tag1
trait Tag2
case class WithTaggedMembers(i: List[Int] @@ Tag1, s: String @@ Tag2)

implicit val encodeIntTag1: Encoder[List[Int] @@ Tag1] = Encoder[List[Int]].narrow

Even when encodeIntTag1 instance is directly in scope, magnolia auto deriver doesn't use them and derives default "coproduct" encoder (and decoder) for list.

Probably should be fixed in magnolia, but maybe have to provide a simpler reproduction case.
@vpavkin vpavkin added magnolia Issue depends on a fix in magnolia repo auto labels Jun 18, 2018
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@vpavkin