[tz] Getting current tzdb version in use

Paul G paul at ganssle.io
Fri Jul 20 15:49:05 UTC 2018

On 07/20/2018 11:34 AM, Fred Gleason wrote:

> This, of course, is horrendously platform-specific, but that illustrates the larger point: TZDB has historically been integrated in all sorts of ways on all sorts of platforms; to expect a new ‘one true way to get the version’ to get any kind of traction at this point is rather utopian.

I don't think it will necessarily be *easy* to get this universally accepted, but I suspect there are a bunch of platform-specific ways to do this because there has, historically, never been a correct way to do it in the upstream project. If `make install` installs a version file, then only people whitelisting the deployed files or blacklisting that file will be missing it.

Also, deploying `tzdata.zi` doesn't hurt. It's a very small file and nothing forces you to abandon your old platform-specific versioning. I suspect that as long as `make install` continues to install `tzdata.zi` by default, as more projects adopt this there will be more demand for platforms to ship that file and eventually it will be widely available.

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