these 2 derivations will be built:
  /nix/store/flshz20nk054bsd34n27r3cfxdnnbl7y-postgres-15-check-harness.drv
  /nix/store/fldivg1w4fx1kbjyb8a5k5kh7nqk6kbh-run-check-harness-psql-15-slim.drv