WinUI3 Experimental build in NuGet

[austinhallock]

Summary

Hey folks! I'm trying to get XamlIslands working in my app so I can add a MediaPlayerElement - similar to the CalendarView example. I can get the code to run with UseExperimentalWinUI3 in my ExperimentalFeatures.props, but the Xaml element doesn't actually show up (for both MediaPlayerElement and CalendarView)

I could be wrong, but I think it's from the ifdefs in ContentIslandComponentView, since I don't think the NuGet version has this enabled.

Is there any chance we can get a version of 0.78.0-preview.3 built with UseExperimentalWinUI3 true?

I've tried building from source with UseExperimentalNuget false on a couple occasions, but run into issues getting it to run on our existing project.

Motivation

Would enable easy use of Xaml elements :)

Basic Example

No response

Open Questions

No response

[chrisglein]

When WinAppSDK 1.7 ships (don't have the date on hand, but not too far away) we'll want to backport this into 0.78 since we won't need to be using the experimental builds here.

[chrisglein]

FYI @JesseCol, sending this one your way to coordinate. Talk to Jon and Andrew for options.

[JesseCol]

Hi @austinhallock , thanks for your interest here! We're still working on Xaml support for new arch and exactly how we want to expose it. We're not quite ready to enable WinUI3 experimental in the Nuget package.

[JesseCol]

Thanks again for your interest!

As I mentioned above, Xaml for new arch is not quite ready yet, but we're working on it. We're tracking it with this issue: microsoft/react-native-xaml#210, feel free to follow along.

I'm closing this issue out because we're not planning on creating a specific Nuget for WinUI3 Experimental.