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I just tried to build brahman, but it seems that the indicated QT 5.12.x is too old for build tools in Monterey. When trying to build it says it's not been tested on these new tools and in the end there are loads of error messages. So I've tried it with QT 6.2.2 which I installed via Homebrew. This ends up in a lot of other error messages (I won't go into detail here).
Are there any updated instructions on building on MacOS Monterey, or is that just simply not supported?