It would be great if this was built into zip and tar. I've been doing an awful find, xargs, and touch combo to get deterministic zips, but the cli args vary be

It would be great if this was built into zip and tar. I've been doing an awful find, xargs, and touch combo to get deterministic zips, but the cli args vary between unix distributions. It would be better if zip and tar could just take a single timestamp arg, and use that for all entries.