these 2 derivations will be built:
  /nix/store/84w7fmflhz4gscn3a2sb8mafax542vbi-nixos-test-driver-pgsodium.drv
  /nix/store/4knkf8c2dwhgrlqvifdr4yqcwrfk6jq2-vm-test-run-pgsodium.drv