these 2 derivations will be built:
  /nix/store/6gsc5nmrjkd7lp21f63f91fv219ibvnv-nixos-test-driver-pg_stat_monitor.drv
  /nix/store/i348wvy3xah3zr9ina80gb18k2jr98fc-vm-test-run-pg_stat_monitor.drv