these 2 derivations will be built:
  /nix/store/y9bvdmya6baq0vnb4zral3a5xrbdlb0p-nixos-test-driver-pg_partman.drv
  /nix/store/hh0407h7in7dcbw9h9n15gwgnrzs15zm-vm-test-run-pg_partman.drv