Re: emacs26-app fails to install

On 10 Feb 2023, at 5:32 pm, Scott Hannahs <[email protected]> wrote:
> 
>> I have not even looked into building a newer glib2 with it, as python itself depends in turn on glib2.
>> Dunno how other packagers would get around that circular dependency (other than maintaining
>> a glib2 <= 2.59 and glib2-current in parallel…)
>> In theory it might indeed be possible to build it with system Python 3.9 on newer macOS,
>> but since it needs to install its mesonbuild module in PYTHONPATH, I would not know how
>> to package that properly.
> 
> I don’t see the dependence of python on glib2.  fink show-deps doesn’t list it.  Ah, I think it is pkgconfig that depends on it?  That is unfortunately sort of  a basic package.  As far as I can see, you can build pkgconfig with glib2 <= 2.59 and then update it to glib2-current as a replaces functionality?  This is a fundamental problem of building a system from scratch and not updating an existing system.  Sort of curious as to how gnome is treating this circular dependency.
> 
Well you’re right – I thought Python itself depended through some levels on one of the dozens of packages
that depend on glib2, but just checked it indeed builds without glib2-shlibs installed.
The pkgconfig circular dep has been a known problem, see https://github.com/fink/fink-distributions/pull/918,
https://github.com/fink/fink-distributions/pull/923, but for that very reason Fink is trying to get rid of it.
Many packages have been moved to ppkg-config already, but meson specifically requires a more complete
replacement and thus BDeps on the new pkgconf. But that will allow both python3xx and meson-py
to build without glib2!

Cheers,
						Derek

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