Re: [PATCH v2] github-ci: update macos jobs to macos-15

[Todd Zullinger <tmz@pobox.com>]

brian m. carlson wrote:
> On 2026-10-19 at 23:47:24, Todd Zullinger wrote:
>> Is it worth using `macos-latest` instead of `macos-26` and
>> letting those jobs move along with the current macOS runner
>> as it changes?
[...]
>> I don't know if that moves to the next release too quickly
>> to be useful to Git or not.  If not, maybe using that will
>> be a more convenient way to get macOS coverage where we
>> don't have a strong preference for the version?
> 
> I believe macOS releases once a year, so I expect that the macOS version
> for GitHub Actions will update about once a year as well and that one
> version a year will be removed.
> 
> Using `macos-latest` would be the easiest way to keep up to date, but it
> would also mean that we wouldn't test older OS features.

That's where the macos-15 jobs take effect.  To be sure, I
wasn't suggesting setting all of them to latest, just those
which are set to macos-26 here, as a way to get rolling
testing on macOS.

-- 
Todd