Without taking a look, I suspect that this happens because the CI environment uses macOS 13, thus Homebrew downloads a precompiled bottle that only works with macOS 13 and above.
I am really fucking tired of Homebrew and the nitpicks it has gained over the years.
Apparently, Cartero currently requires macOS 13 to run, despite me having set the minimum version to 10.14 in the build script.
Without taking a look, I suspect that this happens because the CI environment uses macOS 13, thus Homebrew downloads a precompiled bottle that only works with macOS 13 and above.
I am really fucking tired of Homebrew and the nitpicks it has gained over the years.
MacPorts provides precompiled versions of GTK going down even to MacOS X 10.6, and for libadwaita as well. I don't want to test for such an old version, but if I can test that the dependencies are valid even for 10.14, it'll be good enough for me.