these 3 derivations will be built:
  /nix/store/srjyds6h7nyr4rcnsr3kw5xc322yygbb-start-postgres-server-test.drv
  /nix/store/ajfsakpn51q36x812spyyj7w1xw8nw6w-postgres-15-check-harness.drv
  /nix/store/zypv5gsl91nik4hx6damdw26djj7z86j-run-check-harness-psql-15-slim.drv