`Codable` is unavailable in Embedded Swift and no alternative is present

[MaxDesiatov]

Description

Serializing and deserializing data is a frequent requirement for embedded applications.

Reproduction

Attempt to add Codable conformance to any type when Embedded Swift is enabled.

Expected behavior

A Codable conformance is generated for compatible types, or actionable diagnostic message is emitted that suggests viable alternatives.

Environment

Swift 6.1 development snapshots for any of the supported platforms.

[andy0808]

Serializing and deserializing data is a frequent requirement for embedded applications.

Totally agree! I was able to use this third-party JSON encoder/decoder seamlessly in a bare-metal environment without any additional dependencies. However, when I enable the embedded mode, the Internet of Things turns into the Internet of Nothing.

[Joannis]

@andy0808 IkigaJSON is getting support for Embedded Swift orlandos-nl/IkigaJSON#44

[andy0808]

@andy0808 IkigaJSON is getting support for Embedded Swift orlandos-nl/IkigaJSON#44

@Joannis That’s really awesome to hear. Thank you very much for the information. 😊 I’ll give it a try and see if it works for me. Here’s an update: no luck due to the dependency on Swift-NIO. Tons of errors 😂. After fixing some, even more popped up. But thank you for your new approach!

However, based on feedback from my SwiftIO clients, I believe existentials support is crucial in many application programming scenarios. Most of my clients are originally iOS developers, with only a few having hardware experience. I can sense their disappointment with the current limitations.

I understand that balancing simplicity, performance, and binary size is an incredibly challenging task. I just wanted to share this piece of feedback from my perspective.