https://andrewlock.net/exploring-dotnet-10-preview-features-4-solving-the-source-generator-marker-attribute-problem-in-dotnet-10/

[ignatandrei]

netstandard2.0

<IsRoslynComponent>true</IsRoslynComponent>

[Generator] #pragma warning disable RS1036 // Specify analyzer banned API enforcement setting public class HelloWorldGenerator : IIncrementalGenerator #pragma warning restore RS1036 // Specify analyzer banned API enforcement setting { public void Initialize(IncrementalGeneratorInitializationContext context) { context .RegisterPostInitializationOutput(i => { i.AddEmbeddedAttributeDefinition();// 👈 Add the definition i.AddSource("MyExampleAttribute.g.cs", @" namespace HelloWorld { // 👇 Use the attribute [global::Microsoft.CodeAnalysis.EmbeddedAttribute] internal class MyExampleAttribute: global::System.Attribute {} }"); });

    // ... generator implementaation
}

}