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<div>Hey everyone,<br/>
<br/>
I can confirm that the reason it did not work anymore (macOS, arm64), was due to Xcode 15. I downloaded Xcode 14.3.1 from here (<a href="https://download.developer.apple.com/Developer_Tools/Xcode_14.3.1/Xcode_14.3.1.xip" target="_blank">https://download.developer.apple.com/Developer_Tools/Xcode_14.3.1/Xcode_14.3.1.xip</a>), unzipped it, renamed `Xcode.app` to `Xcode_14.3.1.app` (to be able to have both versions in parallel), copied it to `/Applications` and started it. After that I set the command line tools to 14.3.1 (Settings -> Locations; there are also other ways like `xcode-select -s` and also ways with command line tools only) and just installed PyQt5 using this command: `pip install pyqt5 --config-settings --confirm-license= --verbose`. I can confirm that building PyQt5 from source works again (this still needs `qmake` from `brew` or from qt.io), so there is an incompatibility with some of the contents of Xcode 15. I'll try to find out, which one this is exactly so we might be able to transfer this to linux aarch64.<br/>
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@Nick, are you aware what compiler/libraries PyQt5 uses, so I know where to start digging?<br/>
<br/>
Best,<br/>
Philipp<br/>
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