these 3 derivations will be built:
  /nix/store/kgcjlqgx35nvyczdrlkja96bf49y1g9z-start-postgres-server-test.drv
  /nix/store/gyfq888yg0dzs9qysmwbpls4s1chfv4f-postgres-15-check-harness.drv
  /nix/store/ms17ljdb8k5hjf9ygw6kbad4gay7ibc1-run-check-harness-psql-15.drv