these 2 derivations will be built:
  /nix/store/kdckd1z7rp9s1byb5c2bvkb3l3bf1rci-nixos-test-driver-pgsodium.drv
  /nix/store/wpy63iz870gfr2h40idrprms8sbv82if-vm-test-run-pgsodium.drv