emacs-app-devel build fail on master not detected by buildbot

[Joshua Root]

On 2021-4-23 15:35 , Christopher Jones wrote:
> 
> 
>> On 23 Apr 2021, at 3:48 am, Dan Ports <dports at macports.org> wrote:
>>
>> To be clear, the problem here was that MacPorts uses the xcode-provided
>> git, and certain older systems have a version of git that's too old to
>> support the --shallow-since option, causing the port to break on
>> systems where it's buildable today.
>>
>> Now, those systems are pretty old at this point (IIRC, it was El
>> Capitan and older) so perhaps that is worth reconsidering. We could
>> also install and use our own version of git on older systems as we do
>> for some other fetch/extract dependencies, but that would require a
>> base update.
> 
> why a base update ? Just adding port:git as a build dep would do it, as port would then use that version instead.

Should be depends_fetch, and might also need to set git.cmd to 
${prefix}/bin/git, but yes, it's certainly possible without a base update.

- Josh