these 2 derivations will be built:
  /nix/store/k6fh3w68spxczv94mjh7si5a119pip72-nixos-test-driver-pg_partman.drv
  /nix/store/0f4lj34kcnnh6x6lrz4sfv6znrzyvjxi-vm-test-run-pg_partman.drv