[Bug]: Build error with classes that implement IReactiveObject but do not inherit from ReactiveObject

[megazyz]

Describe the bug 🐞

Adding a [Reactive] property to a class that implements IReactiveObject but does not inherit from ReactiveObject leads to a build error:

The field {MyField} cannot be used to generate an ReactiveUI property, as it is not part of a class that inherits from ReactiveObject

This happens because IsTargetTypeValid(propertySymbol) compares IReactiveObject to propertySymbol.ContainingType.BaseType instead of checking the implemented interfaces on propertySymbol.ContainingType.

Step to reproduce

1. Create a MyReactiveBase class that implements IReactiveObject but does not inherit from ReactiveObject
2. Create a partial class that inherits from MyReactiveBase and add a partial property with the [Reactive] attribute
3. Build

Try the reproduction repository.

Reproduction repository

https://github.com/megazyz/ReactiveUI.SourceGenerators.Repro1

Expected behavior

[Reactive] properties should work when the containing class implements IReactiveObject but does not inherit from ReactiveObject.

Screenshots 🖼️

No response

IDE

Visual Studio 2022

Operating system

No response

Version

No response

Device

No response

ReactiveUI Version

20.2.45

Additional information ℹ️

No response

[ChrisPulman]

This should be resolved with the next release. Thank you

[kyurkchyan]

I am facing this same issue @ChrisPulman . Could you please provide an ETA for the next release?
BTW, I have to use PropertyChanged.Fody just because of this. Once this is released, I can completely remove Fody from my project :)

[glennawatson]

I’ll be doing a release this weekend.

[github-actions]

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