Debian 12 no longer includes system packages for the AdaCore Ada Web Server Library. (Debian 11 had libaws20-dev et al).
I have managed to build AWS v23.0.0 for Debian 12 and published it in the nascent Munts Technologies Debian 12 Package Repository, available at:
http://repo.munts.com/debian12
The goop to build libaws*.deb is stored at:
https://github.com/pmunts/libsimpleio/tree/master/libaws
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