[QGIS-Developer] MacOS packaging current situation

[Peter Petrik]

Hi,

I would like to explain the current situation with the QGIS Mac Packaging
on Mac. The packager is dependent on the dependencies from
https://github.com/OSGeo/homebrew-osgeo4mac, which were not updated to the
required proj6&gdal3 versions yet. Last production-ready version was based
on GDAL2 and therefore the official all-in-one package is based on that too
ATM.
The maintainers of homebrew-osgeo4mac work to update  to gdal3.04 and
proj6.3.1, but it will not be ready to today's release.

I apologize for not fixing the packaging bugs for last few months, since I
was waiting for the gdal3&proj6 update first.

We are looking at how to solve this issue in the long term to be able to
update dependencies for QGIS versions more flexible and even use different
versions of libraries for PR, LTR and nightlies. I will look into various
options:
1. use (forked) homebrew for QGIS dependencies
2. use conda for QGIS dependencies
3. compile deps ourselves, with a simple bash-based framework (like OSGeo4A)

If anyone is interested in helping with the packaging, we can do a meeting
or please send me a mail.

Kind regards,
Peter
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