these 2 derivations will be built:
  /nix/store/dqsk58mbmyz57vkzp0rqccjcs9ng8dml-nixos-test-driver-pgmq.drv
  /nix/store/cdjcl17fi9fw9x24nqghxfda7n99js3c-vm-test-run-pgmq.drv