these 2 derivations will be built:
  /nix/store/x323bw9s2vp20vps4qim7vv9ld937qbk-nixos-test-driver-pgsodium.drv
  /nix/store/1hjnys6nfvxxczq7291lldl3pgglymxw-vm-test-run-pgsodium.drv