these 2 derivations will be built:
  /nix/store/c3qc62nnfwd9k71g7jbscnj8xmqzrc3l-nixos-test-driver-pg_stat_monitor.drv
  /nix/store/s0gqgj8r94gn3awjadqalr4h4sflwb9g-vm-test-run-pg_stat_monitor.drv