py: use setup.cfg to configure setuptools

commit 8ae4dc1f40aa04e499d941faca45fe7e914f0b4d upstream.

Setuptools has had support for declarative configuration for several
years.  To quote their documentation:

  Setuptools allows using configuration files (usually setup.cfg) to
  define a package’s metadata and other options that are normally
  supplied to the setup() function (declarative config).

  This approach not only allows automation scenarios but also reduces
  boilerplate code in some cases.

Additionally, this allows us to introduce support for PEP-517-compatible
build-systems.

Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

3 files changed, 27 insertions, 22 deletions

diff --git a/py/Makefile.am b/py/Makefile.am
index 4056aa61..974539fd 100644
--- a/py/Makefile.am
+++ b/py/Makefile.am
@@ -1 +1 @@
-EXTRA_DIST = setup.py src
+EXTRA_DIST = setup.cfg setup.py src
diff --git a/py/setup.cfg b/py/setup.cfg
new file mode 100644
index 00000000..953b7f41
--- /dev/null
+++ b/py/setup.cfg
@@ -0,0 +1,24 @@
+[metadata]
+name = nftables
+version = attr: nftables.NFTABLES_VERSION
+description = Libnftables binding
+author = Netfilter project
+author_email = coreteam@netfilter.org
+url = https://netfilter.org/projects/nftables/index.html
+provides = nftables
+classifiers =
+  Development Status :: 4 - Beta
+  Environment :: Console
+  Intended Audience :: Developers
+  License :: OSI Approved :: GNU General Public License v2 (GPLv2)
+  Operating System :: POSIX :: Linux
+  Programming Language :: Python
+  Topic :: System :: Networking :: Firewalls
+
+[options]
+packages = nftables
+package_dir =
+  nftables = src
+
+[options.package_data]
+nftables = schema.json
diff --git a/py/setup.py b/py/setup.py
index d08b8b12..beda28e8 100755
--- a/py/setup.py
+++ b/py/setup.py
@@ -1,24 +1,5 @@
 #!/usr/bin/env python
+
 from setuptools import setup
-from nftables import NFTABLES_VERSION
 
-setup(name='nftables',
-      version=NFTABLES_VERSION,
-      description='Libnftables binding',
-      author='Netfilter project',
-      author_email='coreteam@netfilter.org',
-      url='https://netfilter.org/projects/nftables/index.html',
-      packages=['nftables'],
-      provides=['nftables'],
-      package_dir={'nftables':'src'},
-      package_data={'nftables':['schema.json']},
-      classifiers=[
-          'Development Status :: 4 - Beta',
-          'Environment :: Console',
-          'Intended Audience :: Developers',
-          'License :: OSI Approved :: GNU General Public License v2 (GPLv2)',
-          'Operating System :: POSIX :: Linux',
-          'Programming Language :: Python',
-          'Topic :: System :: Networking :: Firewalls',
-          ],
-      )
+setup()