these 2 derivations will be built:
  /nix/store/76dvsl0h02mzrjan7v9ilibhzfhclrpk-nixos-test-driver-pg_partman.drv
  /nix/store/nlcmhzmcff8p2sm550mc18p9570qd0xh-vm-test-run-pg_partman.drv