these 3 derivations will be built:
  /nix/store/9bjswdvv99mv02hg69ijm8pwd7q8ix0j-start-postgres-server-test.drv
  /nix/store/fl7a3g7mng87r93kq1bbwkfbjgn502w3-postgres-15-check-harness.drv
  /nix/store/k1k24xsqbvcpqj2v420wfidznyzl0na1-run-check-harness-psql-15-slim.drv