these 3 derivations will be built:
  /nix/store/7ca5njdk98jqmw4w9z5igrdi3rmd2rv6-start-postgres-server-test.drv
  /nix/store/9glm33sf82y19zllw1v9gkbxq91f9dv9-postgres-15-check-harness.drv
  /nix/store/p7vqx01j1m2vma9fjkb6y2c1p6cms23y-run-check-harness-psql-15-slim.drv