Action items from the recent mailing list thread [Reproducing tarballs under various toolchains](https://lists.reproducible-builds.org/pipermail/rb-general/2018-September/thread.html#1148): - [ ] Document in docs/archives/ that [FreeBSD tar](https://man.freebsd.org/tar) supports --owner and --group under the names --uid/--uname and --gid/--gname. - [ ] Discuss on the site the desirability of being able to reproduce any particular tarball using a different `tar` implementation than the one that originally generated that tarball. - [ ] (not directly related to the website) Send to libarchive patches implementing GNU tar compatibility flags `--owner`, `--group`, and/or send to GNU tar patches implementing BSD tar compatibility flags `--uid`,`--uname`,`--gid`,`--gname`.