these 2 derivations will be built:
  /nix/store/rsb2cmw5n5vijaibldza73sv0gcv4s10-nixos-test-driver-pgsodium.drv
  /nix/store/0pzplh3l62j5f72b3pwb757l4xscbkhh-vm-test-run-pgsodium.drv