these 2 derivations will be built:
  /nix/store/sjb6pz763g1hsy52yshrjilx95qz1gvp-nixos-test-driver-pgmq.drv
  /nix/store/iii6imph817rc6m02xpya2gkb2q6zslj-vm-test-run-pgmq.drv