FlorianSep 20, 2024
Does anyone know why #swift 6 erases `some View` to `AnyView`?
Show threadFlorianSep 20, 2024
At first I thought that ViewBuilder messes something up (e.g. due to the availability restrictions - even though those are the ones of #SwiftUI itself). But since the extra `_body` property has the same problem, it seems to me that this is #swift related.
Show threadJoe Groff (1M Context)Sep 20, 2024
@ffried if Xcode thinks you’re building with previews enabled, it’ll implicitly wrap views in AnyView in order to facilitate dynamic reloading of the preview. That might be one reason
Show threadFlorianSep 20, 2024
@joe Good point. Is there a way to disable this for Swift Packages, though?
Show threadJoe Groff (1M Context)
@ffried at some point debug builds had the “make everything dynamically replaceable” enabled but release builds didn’t, not sure if there are other factors these days. I’ll ask around
Sep 20, 2024 at 2:37pmWeb
Show threadFlorianSep 20, 2024
@joe Very much appreciated, thanks!
Show threadJoe Groff (1M Context)Sep 20, 2024
@ffried Yeah, previews and debug builds now share build products, so views in debug builds get the AnyView wrapping. You can set SWIFT_ENABLE_OPAQUE_TYPE_ERASURE=NO in the build settings to disable this separately (though this probably breaks previews, so you might want to set up a separate scheme if you use previews)
Show threadFlorianSep 20, 2024
@joe Awesome, thanks for looking into it!
Now I just need to figure out how to set that build setting for test builds only somehow.