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Roslyn targeting and packages

Why several Prism.SourceGenerators.Roslyn* projects?

Roslyn’s public API surface and language feature sets evolve per major compiler release. The product ships multiple generator assemblies, each built against a specific Roslyn version, so NuGet can deliver a package that matches the minimum compiler expected for that release line.

Typical mapping (names illustrative — check the repo for the exact set on master):

Project folder	Intent
Roslyn4001	Older VS / SDK stacks still on Roslyn 4.0.x.
Roslyn4031	Mid 4.x line.
Roslyn4120	Newer 4.12-era APIs.
Roslyn5000	Roslyn 5 / current C# feature frontier.

You do not reference these projects from an app. The MvvmAIO.Prism.SourceGenerators package contains the correct precompiled generator for the supported SDK range declared by that package version.

What you reference in an application

• MvvmAIO.Prism.SourceGenerators — analyzer + generator + MvvmAIO.Prism.Core (attributes).
• MvvmAIO.Prism.Bcl.Commands — optional when you need AsyncDelegateCommand on Prism.Core 8.1.97; see PSG3002 and AsyncDelegateCommand.

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• Architecture overview
• Getting started