these 2 derivations will be built:
  /nix/store/akw2v4rskwmm090y1b5wa5mf933hrpzf-nixos-test-driver-pgmq.drv
  /nix/store/iywzy23rs9bg9wqwmg7dh0xy5pq260qq-vm-test-run-pgmq.drv