chore: add and update some backends

Signed-off-by: Henry Schreiner <[email protected]>

Author: henryiii

source/key_projects.rst

@@ -84,6 +84,30 @@ behaviours when asked to handle legacy packages and metadata that
 predate the modern interoperability standards and fall into the subset
 of packages that are incompatible with those standards.
 
+
+.. _distutils:
+
+distutils
+=========
+
+The original Python packaging system, added to the standard library in
+Python 2.0 and removed in 3.12.
+
+Due to the challenges of maintaining a packaging system
+where feature updates are tightly coupled to language runtime updates,
+direct usage of :ref:`distutils` has been actively discouraged, with
+:ref:`Setuptools` being the preferred replacement. :ref:`Setuptools`
+not only provides features that plain :ref:`distutils` doesn't offer
+(such as dependency declarations and entry point declarations), it
+also provides a consistent build interface and feature set across all
+supported Python versions.
+
+Consequently, :ref:`distutils` was deprecated in Python 3.10 by :pep:`632` and
+has been :doc:`removed <python:whatsnew/3.12>` from the standard library in
+Python 3.12.  Setuptools bundles the standalone copy of distutils, and it is
+injected even on Python < 3.12 if you import setuptools first or use pip.
+
+
 .. _flit:
 
 flit
@@ -452,6 +476,19 @@ problem of installing scientific software, and making package
 distribution stateless, cached, and branchable. It is used by some
 researchers but has been lacking in maintenance since 2016.
 
+.. _maturin:
+
+Maturin
+=======
+
+`Docs <https://www.maturin.rs>`__ |
+`GitHub <https://github.com/PyO3/maturin>`__
+
+Maturin is a PEP 517 build backend for Rust extension modules, also written in
+Rust. It supports building wheels for python 3.7+ on Windows, Linux, macOS and
+FreeBSD, can upload them to PyPI and has basic PyPy and GraalPy support.
+
+
 .. _meson-python:
 
 meson-python
@@ -472,7 +509,7 @@ of most complex build configurations.
 multibuild
 ==========
 
-`GitHub <https://github.com/matthew-brett/multibuild>`__
+`GitHub <https://github.com/multi-build/multibuild>`__
 
 Multibuild is a set of CI scripts for building and testing Python :term:`wheels <Wheel>` for
 Linux, macOS, and (less flexibly) Windows. Also see :ref:`cibuildwheel`.
@@ -604,6 +641,22 @@ build requirements. To speed up and parallelize the build of large projects,
 the user can install `ninja <https://pypi.org/project/ninja>`__ (also available
 on PyPI).
 
+.. _scikit-build-core:
+
+scikit-build-core
+=================
+
+`Docs <https://scikit-build-core.readthedocs.io/en/latest/>`__ |
+`GitHub <https://github.com/scikit-build/scikit-build-core/>`__ |
+`PyPI <https://pypi.org/project/scikit-build-core>`__
+
+Scikit-build-core is a PEP 517 backend for CPython C/C++/Fortran/Cython
+extensions.  It enables users to write extensions with `cmake
+<https://pypi.org/project/cmake>`__ (available on PyPI) to provide better
+support for additional compilers, build systems, cross compilation, and
+locating dependencies and their associated build requirements. CMake/Ninja
+are automatically downloaded from PyPI if not available on the system.
+
 .. _shiv:
 
 shiv
@@ -671,26 +724,6 @@ cases, end users won't use this module, but rather it will be used during the
 build of the Python distribution.
 
 
-.. _distutils:
-
-distutils
-=========
-
-The original Python packaging system, added to the standard library in
-Python 2.0.
-
-Due to the challenges of maintaining a packaging system
-where feature updates are tightly coupled to language runtime updates,
-direct usage of :ref:`distutils` has been actively discouraged, with
-:ref:`Setuptools` being the preferred replacement. :ref:`Setuptools`
-not only provides features that plain :ref:`distutils` doesn't offer
-(such as dependency declarations and entry point declarations), it
-also provides a consistent build interface and feature set across all
-supported Python versions.
-
-Consequently, :ref:`distutils` was deprecated in Python 3.10 by :pep:`632` and
-has been :doc:`removed <python:whatsnew/3.12>` from the standard library in Python 3.12.
-
 .. _venv:
 
 venv