Interesting PR on the consolidation. On thePrism.Avalonia's side, I'm currently making some changes to the DialogService for the next 2023-Q2 release. Overall, this looks very beneficial.

@dansiegel Do you foresee any integration issues?

For starters, I was making the ShowDialog'sAction<IDialogResult> callback optional (AvaloniaCommunity/Prism.Avalonia#79).

Also, overloadedShowDialog to optionally supply a parent window for modal dialogs (AvaloniaCommunity/Prism.Avalonia#76). Because Avalonia operates differently than WPF, I have to explicitly set the parent whether it's themain window or another dialog window.

@DamianSuess overall I think it should make it easier for you. The Core is meant to have the extensions to provide backwards compatibility. Currently the one thing which is platform specific and may still change is that the extensions for Show are in WPF since this is the only platform which implements such functionality.

Thanks, Dan, I appreciate the feedback on the topic.
I can rest a bit better this weekend now. Hope you get to as well ;)