these 2 derivations will be built:
  /nix/store/d4ah9wcrybn5py4dgbvh2l0zpydgc9fd-nixos-test-driver-pg_partman.drv
  /nix/store/q9vwaadcqk83hl0lfd15n9ly8qmc1zc7-vm-test-run-pg_partman.drv