Installation of Python bindings relies on the legacy setup.py

[dvzrv]

Hi! 👋

I maintain this project as a package for Arch Linux.

When upgrading to 0.26 I noticed, that your setup still relies on the legacy setup.py way of building and installing.
Since PEP517 this is deprecated and will break with upcoming setuptools/ python versions.

See warning message below:

-- Install configuration: "None"
-- Installing: /build/libiio/pkg/libiio/usr/lib/pkgconfig/libiio.pc
-- Installing: /build/libiio/pkg/libiio/usr/lib/libiio.so.0.26
-- Installing: /build/libiio/pkg/libiio/usr/lib/libiio.so.0
-- Installing: /build/libiio/pkg/libiio/usr/lib/libiio.so
-- Installing: /build/libiio/pkg/libiio/usr/include/iio.h
-- Installing: /build/libiio/pkg/libiio/usr/lib/udev/rules.d/90-libiio.rules
-- Installing: /build/libiio/pkg/libiio/usr/bin/iio_genxml
-- Set non-toolchain portion of runtime path of "/build/libiio/pkg/libiio/usr/bin/iio_genxml" to ""
-- Installing: /build/libiio/pkg/libiio/usr/bin/iio_info
-- Set non-toolchain portion of runtime path of "/build/libiio/pkg/libiio/usr/bin/iio_info" to ""
-- Installing: /build/libiio/pkg/libiio/usr/bin/iio_attr
-- Set non-toolchain portion of runtime path of "/build/libiio/pkg/libiio/usr/bin/iio_attr" to ""
-- Installing: /build/libiio/pkg/libiio/usr/bin/iio_readdev
-- Set non-toolchain portion of runtime path of "/build/libiio/pkg/libiio/usr/bin/iio_readdev" to ""
-- Installing: /build/libiio/pkg/libiio/usr/bin/iio_reg
-- Set non-toolchain portion of runtime path of "/build/libiio/pkg/libiio/usr/bin/iio_reg" to ""
-- Installing: /build/libiio/pkg/libiio/usr/bin/iio_writedev
-- Set non-toolchain portion of runtime path of "/build/libiio/pkg/libiio/usr/bin/iio_writedev" to ""
-- Installing: /build/libiio/pkg/libiio/usr/bin/iio_stresstest
-- Set non-toolchain portion of runtime path of "/build/libiio/pkg/libiio/usr/bin/iio_stresstest" to ""
running install
/usr/lib/python3.12/site-packages/setuptools/_distutils/cmd.py:66: SetuptoolsDeprecationWarning: setup.py install is deprecated.
!!

        ********************************************************************************
        Please avoid running ``setup.py`` directly.
        Instead, use pypa/build, pypa/installer or other
        standards-based tools.

        See https://blog.ganssle.io/articles/2021/10/setup-py-deprecated.html for details.
        ********************************************************************************

!!
  self.initialize_options()
running build
running build_py
copying iio.py -> build/lib
running install_lib
creating /build/libiio/pkg/libiio/usr/lib/python3.12
creating /build/libiio/pkg/libiio/usr/lib/python3.12/site-packages
copying build/lib/iio.py -> /build/libiio/pkg/libiio/usr/lib/python3.12/site-packages
byte-compiling /build/libiio/pkg/libiio/usr/lib/python3.12/site-packages/iio.py to iio.cpython-312.pyc
running install_egg_info
running egg_info
creating pylibiio.egg-info
writing pylibiio.egg-info/PKG-INFO
writing dependency_links to pylibiio.egg-info/dependency_links.txt
writing top-level names to pylibiio.egg-info/top_level.txt
writing manifest file 'pylibiio.egg-info/SOURCES.txt'
reading manifest file 'pylibiio.egg-info/SOURCES.txt'
writing manifest file 'pylibiio.egg-info/SOURCES.txt'
Copying pylibiio.egg-info to /build/libiio/pkg/libiio/usr/lib/python3.12/site-packages/pylibiio-0.26-py3.12.egg-info
running install_scripts
-- Installing: /build/libiio/pkg/libiio/usr/share/man/man1/iio_attr.1
-- Installing: /build/libiio/pkg/libiio/usr/share/man/man1/iio_genxml.1
-- Installing: /build/libiio/pkg/libiio/usr/share/man/man1/iio_info.1
-- Installing: /build/libiio/pkg/libiio/usr/share/man/man1/iio_readdev.1
-- Installing: /build/libiio/pkg/libiio/usr/share/man/man1/iio_reg.1
-- Installing: /build/libiio/pkg/libiio/usr/share/man/man1/iio_stresstest.1
-- Installing: /build/libiio/pkg/libiio/usr/share/man/man1/iio_writedev.1
-- Installing: /build/libiio/pkg/libiio/usr/share/man/man1/iiod.1
-- Installing: /build/libiio/pkg/libiio/usr/share/man/man3/libiio.3
-- Installing: /build/libiio/pkg/libiio/usr/bin/iiod
-- Set non-toolchain portion of runtime path of "/build/libiio/pkg/libiio/usr/bin/iiod" to ""
-- Installing: /build/libiio/pkg/libiio/usr/lib/systemd/system/iiod.service
install: creating directory '/build/libiio/pkg/libiio/usr/share/doc'
install: creating directory '/build/libiio/pkg/libiio/usr/share/doc/libiio'
'libiio-0.26/CONTRIBUTING.md' -> '/build/libiio/pkg/libiio/usr/share/doc/libiio/CONTRIBUTING.md'
'libiio-0.26/Contributors.md' -> '/build/libiio/pkg/libiio/usr/share/doc/libiio/Contributors.md'
'libiio-0.26/README.md' -> '/build/libiio/pkg/libiio/usr/share/doc/libiio/README.md'

It would be good to switch to build and installer for building a wheel from your python sources and installing it (respectively).