these 2 derivations will be built:
  /nix/store/0p10jnh7dz443rjkx3i468az4wan3wgi-postgres-15-check-harness.drv
  /nix/store/xbjdzr4jn7y8dv7bmm1m9c6fmw39785l-run-check-harness-psql-15-slim.drv