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dotnet
.NET Community Toolkit is a collection of helpers and APIs that work for all .NET developers and are agnostic of any specific UI platform. The toolkit is maintained and published by Microsoft, and part of the .NET Foundation. (by CommunityToolkit)
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WorkOS
The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
This is tracked by https://github.com/CommunityToolkit/dotnet/issues/409. The issue is likely that AppCenter image using an older version of Visual Studio (and Roslyn). The MVVM Toolkit needs at least Roslyn 4.0 (ie. Visual Studio 2022) in order to work. Unfortunately this is not something we can change from the MVVM Toolkit, you have to open a support request for AppCenter to ask for a newer Roslyn version, or see if there is a way for you to enable that in your pipeline 🥲