these 2 derivations will be built:
  /nix/store/a5ba8g5s471diix70i4sy9bm63wlhy2c-nixos-test-driver-pgsodium.drv
  /nix/store/kq6ap7wmcx71jvnb4fz8qgkpi6zlfs04-vm-test-run-pgsodium.drv