[1.7.0] Build error when running on older macOS versions (Github Actions): value of type 'NSToolbar' has no member 'allowsDisplayModeCustomization'

[pulyaevskiy]

Here is a snippet from the build log:

Running pod install...                                           2,594ms
Building macOS application...                                   
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:0000FE00-B50589B170C4DBCA, name:My Mac }
{ platform:macOS, arch:x86_64, id:0000FE00-B50589B170C4DBCA, name:My Mac }
/Users/runner/.pub-cache/hosted/pub.dev/macos_window_utils-1.7.0/macos/Classes/MainFlutterWindowManipulator.swift:418:[26](https://github.com/***************/actions/runs/14097190443/job/39486630928#step:11:27): error: value of type 'NSToolbar' has no member 'allowsDisplayModeCustomization'
              newToolbar.allowsDisplayModeCustomization = false
              ~~~~~~~~~~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/runner/.pub-cache/hosted/pub.dev/macos_window_utils-1.7.0/macos/Classes/MainFlutterWindowManipulator.swift:433:29: error: value of type 'BlockingToolbar' has no member 'allowsDisplayModeCustomization'
              customToolbar.allowsDisplayModeCustomization = false
              ~~~~~~~~~~~~~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/runner/.pub-cache/hosted/pub.dev/macos_window_utils-1.7.0/macos/Classes/MainFlutterWindowManipulator.swift:418:26: error: value of type 'NSToolbar' has no member 'allowsDisplayModeCustomization'
              newToolbar.allowsDisplayModeCustomization = false
              ~~~~~~~~~~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/runner/.pub-cache/hosted/pub.dev/macos_window_utils-1.7.0/macos/Classes/MainFlutterWindowManipulator.swift:433:[29](https://github.com/***************/actions/runs/14097190443/job/39486630928#step:11:30): error: value of type 'BlockingToolbar' has no member 'allowsDisplayModeCustomization'
              customToolbar.allowsDisplayModeCustomization = false
              ~~~~~~~~~~~~~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
...

** BUILD FAILED **

Build process failed
Error: Process completed with exit code 1.

Note that the workflow uses macos-latest runner with Xcode 15.4 and macos-14, I believe.

I don't get any errors when building locally, but I have Sequoia, so the allowsDisplayModeCustomization method is available.

Downgrading to 1.6.1 resolves the issue.

I see there are macos-15 runners in preview available so I can try those too with the latest version.

[Adrian-Samoticha]

What’s weird is that the only two lines that use allowsDisplayModeCustomization were already present in 1.6.1. Even more bizarre, they are both guarded by an if #available(macOS 15.0, *) { clause, meaning they shouldn’t even run on macOS 14.

[Aaquila]

Was this resolved ? I'm facing similar issues.

[pulyaevskiy]

I'm still on 1.6.1 and haven't tried latest since.

[Aaquila]

The latest doesn't work, downgraded version worked.