these 2 derivations will be built:
  /nix/store/nkxvs31i9xqkk2rxaf8iycgs3bndpyl1-postgres-15-check-harness.drv
  /nix/store/b6mr54ajaaqdxwkxrwxqnj3p9a7lklc9-run-check-harness-psql-15.drv