these 3 derivations will be built:
  /nix/store/dkgj07w4yabzgp5z619l4w8nv13hi0dw-start-postgres-server-test.drv
  /nix/store/0ynyh21x3pm8p05y4fkbgnkn85aqll8s-postgres-15-check-harness.drv
  /nix/store/35vmacmxx6fal2rk063h8bdyqq726629-run-check-harness-psql-15-slim.drv