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[pigeon] Nested list types aren't preserved #116117

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[pigeon] Nested list types aren't preserved#116117
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P2Important issues not at the top of the work listp: pigeonrelated to pigeon messaging codegen toolpackageflutter/packages repository. See also p: labels.team-ecosystemOwned by Ecosystem teamtriaged-ecosystemTriaged by Ecosystem team
@stuartmorgan-g

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@stuartmorgan-g
stuartmorgan-g
opened on Nov 28, 2022

The Everything type in pigeons/all_datatypes.dart has a field List<List<bool?>?>? nestedList. In an integration test of the echo API I tried to do a listEquals on the sent and received objects' nestedList items and got:

type 'List<Object?>' is not a subtype of type 'List<bool?>?' in type cast

It looks like we're not correctly reconstructing the nested types in the host->Dart direction. Even just trying to print the object is throwing a cast error.

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    P2Important issues not at the top of the work listp: pigeonrelated to pigeon messaging codegen toolpackageflutter/packages repository. See also p: labels.team-ecosystemOwned by Ecosystem teamtriaged-ecosystemTriaged by Ecosystem team

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