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Dynamically compile shader and access it through SwiftUI's ShaderLibrary

Is it possible to dynamically compile a shader (at runtime) using something like MTLDevices makeLibrary, and convert that over to a SwiftUI ShaderLibrary? In theory it looks like it should be possible - ShaderLibrary can be initialised with a data parameter which according to the docs is a compiled shader library, but I'm not sure how I'd go about converting a MTLLibrary to data. Is this possible at all?
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by AndyQ.
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WidgetEntryPointFactory' does not conform to `NonUIEntryPoint` when previewing watch widget

Following the sample notes at https://developer.apple.com/documentation/widgetkit/creating-lock-screen-widgets-and-watch-complications, when I try to preview the Watch widget, I get an error saying: Cannot preview in this file WidgetEntryPointFactory' does not conform to NonUIEntryPoint RemoteHumanReadableError: Type 'WidgetEntryPointFactory' does not conform to NonUIEntryPoint (in framework at path /System/Library/PrivateFrameworks/ChronoCore.framework/Support/WidgetPreviewsExtensionAgent.bundle) ================================== |  MessageSendFailure: Message send failure for <ServiceMessage 187: update> App widgets preview fine though. Am I doing something obviously wrong?
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by AndyQ.
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Unable to connect to other Macs running Big Sur (beta 5) using File Sharing

When trying to connect to another Mac running Big Sur (beta 5) using file sharing (smb or afp), it won't accept the username/password. The dialog just shakes and won't connect. I could connect from a Mac running Bug Sur to another Mac running Catalina fine but not the other way around. Anyone got a workaround? Reported as FB8520247
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by AndyQ.
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Beta 3 - can't open Preview from command line

Was doing a little bit of scripting with python and pillow, and discovered that it can't open the Preview app from /Applications/Preview.app.Checked from the command line and sure enough, the Preview.app doesn't show in /Applications.However, looking in /Applications using Finder then the Preview.app is there (and info shows its path is /Applications/Preview.app).I'm assuming that this is something to do with the partitioning changes but wanted to see if anyone know why this would happen, if it was a bug and if there was a workaround.
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by AndyQ.
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