these 2 derivations will be built:
  /nix/store/ga0bfwnf06yphys91dxhq95ms2bv0qk0-nixos-test-driver-pg_net.drv
  /nix/store/l2xmn43120vi7yxk4l554hq4phk7fvks-vm-test-run-pg_net.drv