these 2 derivations will be built:
  /nix/store/wjc0h3799dijr7nkdb3f4k0pl4pkglm2-nixos-test-driver-pg_partman.drv
  /nix/store/0ns9sx2by13d42vlaf4m226azjrmg7j5-vm-test-run-pg_partman.drv