Write Swift macros

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Discuss the WWDC23 Session Write Swift macros

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External macro implementation type could not be found for macro 'stringify'
Hi. I created a new swift macro package and wan't to start using the template which contains the #stringify macro out of the box without any changes. The package itself runs incl. tests But now I added the Package to a dummy iOS app project / workspace and I can't compile if im using this code let (_, _) = #stringify(a + b) + package import Compile error: External macro implementation type '***.StringifyMacro' could not be found for macro 'stringify' I am using Xcode 15 and macOS 13.5.2 Restart Xcode, Clean etc doesn't help. Can anyone help my ? Thanks :)
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Jun ’24