Question 293409 in Xcode Question posted in
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Xcode 15.0: "expand macro" stays greyed out

“Expand Macro” stays gray even though I’ve seen the @Observable macro expanding earlier.

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However when I manually trigger build error it does expand the location of the error. In this case I target macOS 13.5 that doesn’t support ObservationRegistrar.

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I tried to restart Xcode, try different macros, different projects and types of projects.

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2

Answers


  1. 0

    @Observable is only available in

    iOS 17.0+
    iPadOS 17.0+
    macOS 14.0+
    Mac Catalyst 17.0+
    tvOS 17.0+
    watchOS 10.0+
    visionOS 1.0+ Beta

    You cannot use it for macOS 13.5. I don’t think any of the macros work below macOS 14.

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  2. 0

    I believe you are missing "import Observation" at the top of your file

    I ran into the same issue as it is not so straight forward that all the @observable macros "work" in code, they just cant be expanded without importing first.
    Seems like the compiler does not require the import, just XCode.

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