these 2 derivations will be built:
  /nix/store/svl8ykl33s1b629j0hlwz5j9qlz91wyg-nixos-test-driver-pgmq.drv
  /nix/store/2b4m0vrkv30yfw15297ix0jx4rpsfd16-vm-test-run-pgmq.drv