these 2 derivations will be built:
  /nix/store/15v0pbfcyl5qiwjdz6l4c96b568lrrgc-nixos-test-driver-pg_partman.drv
  /nix/store/wwswfq76xjl4z8rmn7w15jkxjl785yjx-vm-test-run-pg_partman.drv