Thanks for this! Unfortunately though I think that getting the archiver is a bit more complicated than listed here. There's already logic in the cc crate to do this and ideally we could reuse that, but it's not exported right now. Would you be up for making a PR to the cc crate to export this functionality which could then be used here?

This worked for me. I'm not going to have the mac for much longer, and wont be able to commit any of that time to working on a more complicated solution. That said, if the logic is already there in cc, I should be able to do the work you are suggesting from another OS. I'll look into it.