Re: Python 3.13 fails to build under macOS, expat issue

[Jonathan Perkin <jperkin%pkgsrc.org@localhost>]

* On 2026-08-14 at 10:30 BST, Benny Siegert wrote:

> What do you propose? I can just disable builtin expat on Darwin, but 
> that feels like a hack.

Remember that Apple have fundamentally broken builtins.  It is now 
impossible, for example, to ensure that check-shlibs works correctly, 
given they no longer ship the actual e.g. /usr/lib/libexpat.dylib file 
and instead you have to rely on some weird virtual library cache.

You also have the added complications of the headers coming from the 
target SDK version and not what's installed on the host system.

It is definitely not a hack to PREFER_PKGSRC=yes on modern Darwin.  I 
would argue it's the correct choice, and use it on all my systems and 
published package repositories.

--
Jonathan Perkin                    pkgsrc.smartos.org
Open Source Complete Cloud   www.tritondatacenter.com