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chore(deps): update reactiveui (major) - #993

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@renovate renovate Bot commented Oct 6, 2026 •
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This PR contains the following updates:

Package Change Age Confidence
ReactiveUI (source) 25.* → 26.* age confidence
ReactiveUI.Validation (source) 7.* → 8.* age confidence

Release Notes

reactiveui/reactiveui (ReactiveUI)

v26.0.1

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🗞️ What's Changed

🧹 General Changes

🔗 Full Changelog: reactiveui/ReactiveUI@26.0.0...26.0.1

🙌 Contributions

💖 Thanks to all the contributors: @​glennawatson

v26.0.0

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Summary

ReactiveUI 26.0.0 is a major version because the .NET 11 assemblies are built without runtime-async. The public API does not change.

Why runtime-async is off
  • In .NET 10 and older, the C# compiler adds a state machine to each async method. The state machine stores the local variables and tracks where to resume after each await.
  • .NET 11 adds a feature called runtime-async. The runtime does this work instead, so async code can run faster.
  • ReactiveUI 25.x built the .NET 11 assemblies with runtime-async on. The .NET 8 to 10 and .NET Framework assemblies never used it.
  • The feature needs a runtime that supports it. CoreCLR does, and Mono does not.
  • Blazor WebAssembly runs on Mono unless you opt into CoreCLR. Avalonia's browser apps, WASI, Android API levels 21 to 23, and apps that set UseMonoRuntime=true also run on Mono.
  • ReactiveUI built with runtime-async can fail in every app that runs on Mono.
  • A NuGet package ships one build for every runtime, so ReactiveUI leaves the feature off. This matches ReactiveUI.Binding 9.0.0 and Refit 16.0.0.
  • Apps that target .NET 10 or older are not affected. Apps on .NET 11 that run on CoreCLR do not get the speed gain inside ReactiveUI's own async code.
  • You can turn on runtime-async in your own app if it runs only on CoreCLR.
Other changes
  • View WhenActivated is now trim and AOT safe. It watches the view's ViewModel through the registered ICreatesObservableForProperty plugin, as the binding source generator does, instead of reflection. The [RequiresUnreferencedCode] attribute is gone from every view WhenActivated overload, including the WPF ones, so views that call this.WhenActivated(...) publish with Native AOT without trim warnings.
  • ReactiveUI.Binding is updated to 9.0.0. That release also fixes BindCommandUnsafe keeping bindings it had replaced (reactiveui/ReactiveUI.Binding.SourceGenerators#163).

🗞️ What's Changed

🐛 Fixes

🔗 Full Changelog: reactiveui/ReactiveUI@25.1.1...26.0.0

🙌 Contributions

💖 Thanks to all the contributors: @​glennawatson

v25.1.1

Compare Source

🗞️ What's Changed

🧹 General Changes
📦 Dependencies

🔗 Full Changelog: reactiveui/ReactiveUI@25.1.0...25.1.1

🙌 Contributions

💖 Thanks to all the contributors: @​glennawatson

🤖 Automated services that contributed: renovate[bot]

v25.1.0

Compare Source

🗞️ What's Changed

🧹 General Changes
📦 Dependencies

🔗 Full Changelog: reactiveui/ReactiveUI@25.0.1...25.1.0

🙌 Contributions

💖 Thanks to all the contributors: @​glennawatson

🤖 Automated services that contributed: renovate[bot]

v25.0.1

Compare Source

Summary

ReactiveUI 25.0.1 adds back the ability to ask an interaction as an observable through IInteraction<TInput, TOutput>. ReactiveUI 25.0.0 removed it by accident.

  • IInteraction<TInput, TOutput>.Handle(input) returns IObservable<TOutput>, as it did in ReactiveUI 24.
  • Interaction<TInput, TOutput>.WhenHandled(input) returns the question as an IObservable<TOutput>.
  • new Interaction<TInput, TOutput>(handlerScheduler) runs each handler on that scheduler, such as RxSchedulers.MainThreadScheduler.
  • Interaction<TInput, TOutput>.Handle(input) still returns Task<TOutput>, so code written against 25.0.0 keeps compiling.

The change comes from ReactiveUI.Binding 8.6.0. The migration guide shows how to use each call.

🗞️ What's Changed
🧹 General Changes

🔗 Full Changelog: reactiveui/ReactiveUI@25.0.0...25.0.1

🙌 Contributions

💖 Thanks to all the contributors: @​glennawatson

reactiveui/reactiveui.validation (ReactiveUI.Validation)

v8.1.0: 8.1.0

🗞️ What's Changed

✨ Features

🔗 Full Changelog: v8.0.0...v8.1.0

🙌 Contributions

💖 Thanks to all the contributors: @​glennawatson

v8.0.0: 8.0.0

Upgrading to 8.0

Version 8.0 requires ReactiveUI 26.0.1. It adds packages for apps that use System.Reactive. Default formatting also works with dependency containers that throw when a formatter is not registered.

  • For apps using ReactiveUI, keep ReactiveUI.Validation and the existing validation namespaces.
  • For apps using ReactiveUI.Reactive, use ReactiveUI.Validation.Reactive. Change validation imports to ReactiveUI.Validation.Reactive.*. Android apps should use ReactiveUI.Validation.AndroidX.Reactive.
  • Rebuild all projects that reference validation. Optional parameters have become overloads. Generic view model types need a class constraint where required by the validation API.
  • Custom schedulers in the core package use ReactiveUI.Primitives.Concurrency.ISequencer. The .Reactive packages use System.Reactive's IScheduler.

🗞️ What's Changed

💥 Breaking Changes
🐛 Fixes
🧹 General Changes
📝 Documentation
📦 Dependencies

🔗 Full Changelog: v7.1.0...v8.0.0

🙌 Contributions

💖 Thanks to all the contributors: @​ChrisPulman, @​glennawatson

🤖 Automated services that contributed: renovate[bot]

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@codecov

codecov Bot commented Oct 6, 2026 •
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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (cde3062) to head (af405d2).

Additional details and impacted files 
@@            Coverage Diff            @@
##              main      #993   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           23        23           
  Lines          694       694           
  Branches       104       104           
=========================================
  Hits           694       694

☔ View full report in Codecov by Harness.
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@renovate
renovate Bot force-pushed the renovate/major-reactiveui branch from 62cd537 to af405d2 Compare October 7, 2026 08:24
@renovate renovate Bot changed the title chore(deps): update dependency reactiveui to v26 chore(deps): update reactiveui (major) Oct 7, 2026

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