these 2 derivations will be built:
  /nix/store/9rlvvw4cs9bznc3a3izzn4dhhdjv4p8s-nixos-test-driver-pg_partman.drv
  /nix/store/5999n9bb0cyfcbqb83kk90n40xi0cjdd-vm-test-run-pg_partman.drv