This is just C++ changes without any Perl / Frontend / SQL Schema changes. The idea is that it should be possible to redeploy Hydra with these chnages with (a) no schema migration and also (b) no regressions. We should be able to much more safely deploy these to a staging server and then production `hydra.nixos.org`. Extracted from #875 Co-Authored-By: Théophane Hufschmitt <theophane.hufschmitt@tweag.io> Co-Authored-By: Alexander Sosedkin <monk@unboiled.info> Co-Authored-By: Andrea Ciceri <andrea.ciceri@autistici.org> Co-Authored-By: Charlotte 🦝 Delenk Mlotte@chir.rs> Co-Authored-By: Sandro Jäckel <sandro.jaeckel@gmail.com>