On Tue, Aug 16, 2022 at 8:51 PM Paul Eggert <eggert@cs.ucla.edu> wrote:
On 8/16/22 14:57, Bradley White wrote:
> $ TZ=<path-to-standard>/Africa/Freetown date -d @1660625107
> Tue Aug 16 04:45:07 GMT 2022
> $ TZ=<path-to-packrat>/Africa/Freetown date -d @1660625107
> Tue Aug 16 05:05:07 +01 2022

The Africa/Freetown glitch was introduced in 2022a when fixing other
problems with Sierra Leone.

I installed into the development repository the attached patch to
'backzone' to fix these glitches.

Because this patch affects only 'backzone', it doesn't affect any
timestamps in the default build.

The sense I'm getting from discussions on the backzone issue is that many corporations and redistributors will become "PACKRAT"s when moving to 2022b, if only to provide historical consistency (and independently of what anyone considers historical accuracy).  The "global-tz" advocates certainly fall into that category.

In that light, you might reconsider the concept of a "default build".  It is just one choice, and one which may not be used by the majority of consumers.

Concretely, I suggest that backzone changes affecting current timestamps (like the Africa/Freetown case above) be treated with the same release expediency that would be afforded to similar changes in the "default" data.