Merge pull request #2259 from h-vetinari/byebye_pypy

Add announcement for sunsetting PyPy

Author: h-vetinari

news/2024-08-14-sunsetting-pypy.md

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+# Sunsetting PyPy support
+
+TL;DR: We are planning to remove PyPy from conda-forge feedstock recipes in a
+few weeks (and thus to stop building new releases of packages for PyPy), unless
+there is substantial enough interest to justify the continued maintenance effort.
+
+<!-- truncate -->
+
+Conda-forge introduced [support](https://conda-forge.org/blog/2020/03/10/pypy/)
+for [PyPy](https://pypy.org/index.html) as an alternative implementation of
+Python about 4.5 years ago.
+
+In that time we have worked hard together with developers from PyPy to provide
+easily installable pre-compiled builds of the most common libraries also for PyPy.
+
+As a very positive side-effect, the infrastructure of conda-forge is now fully
+equipped to deal with alternative implementations of the Python interpreter,
+which will continue to be useful (for example for supporting the experimental
+free-threading builds of CPython 3.13).
+
+However, due to a lack of resources – both in terms of expertise for PyPy, as
+well as available time of those who can help – the conda-forge builds for PyPy
+packages have been in minimal maintenance for a while (for example, we never
+migrated for PyPy 3.10, nor did PyPy participate in the NumPy 2.0 migration).
+
+As a consequence, we unfortunately need to announce that we are sunsetting
+support for PyPy. This means we will stop the long-running migrator to add
+PyPy to new feedstocks, and we will begin removing PyPy builds from feedstocks
+at the latest on October 1st, or when we begin migrating for CPython 3.13
+(whichever comes earlier).
+
+If you are depending on PyPy builds in some way, please let us know about the
+specifics of your situation in the discussion issue for the
+[RFC](https://github.com/conda-forge/conda-forge.github.io/issues/2255).
+
+There is a possibility that we receive the necessary support from the PyPy
+developers, if it turns out that enough people depend on PyPy support in
+conda-forge for it to be worth their time. As such, please speak up if you
+fall into this category!
+
+Finally, no matter the outcome, we want to congratulate the PyPy developers
+for their important contributions and exploration of what is possible in the
+Python ecosystem! 👏
+
+It has been a pleasure to collaborate!