these 2 derivations will be built:
  /nix/store/j62yqjaq7mrnp9lc6j1ag0fqjawwbq4c-nixos-test-driver-pgsodium.drv
  /nix/store/bdnlj348f0ni0k1j6d8swblb5l1yy08w-vm-test-run-pgsodium.drv