Switch to hatchling

Because of https://github.com/pypa/pip/issues/10978,
`make install` is currently unable to install the Python code
to a custom prefix (PREFIX).

.gitignore

-*.pyc
-*.pyo
-*.swp
-*~
-/build/
 /dist/
-/re6stnet.egg-info/
-*.log
-*.pid
-*.db
-*.state
-*.crt
-*.pem
-demo/mbox
-*.sock

Makefile

 DESTDIR = /
+# https://github.com/pypa/pip/issues/10978
 PREFIX = /usr/local
 MANDIR = $(PREFIX)/share/man
-UNITDIR = /lib/systemd/system
-PYTHON = $(or $(shell command -v python2),python)
+UNITDIR = $(PREFIX)/lib/systemd/system
+PIP_INSTALL = python3 -m pip install
 
 MANPAGELIST := $(patsubst %,docs/%,re6st-conf.1 re6st-registry.1 re6stnet.8)
 
@@ -18,7 +19,7 @@ install: install-noinit
 
 install-noinit: install-man
 	set -e $(DESTDIR)$(PREFIX) /bin/re6stnet; [ -x $$1$$2 ] || \
-	$(PYTHON) setup.py install --prefix=$(PREFIX) --root=$(DESTDIR); \
+	{ [ "$(PREFIX)" = /usr/local ]; $(PIP_INSTALL) --root=$(DESTDIR) .; }; \
 	install -d $$1/sbin; mv $$1$$2 $$1/sbin
 	install -Dpm 0644 daemon/README.conf $(DESTDIR)/etc/re6stnet/README
 	install -Dpm 0644 daemon/logrotate.conf $(DESTDIR)/etc/logrotate.d/re6stnet
@@ -29,5 +30,4 @@ install-man: $(MANPAGELIST)
 	done
 
 clean:
-	find -name '*.pyc' -delete
-	rm -rf build dist re6stnet.egg-info $(MANPAGELIST)
+	find -name __pycache__ -print0 |xargs -0 rm -rf dist $(MANPAGELIST)

debian/common.mk

@@ -15,10 +15,4 @@ debian/changelog:
 	echo "$$CHANGELOG" >$@
 endif
 
-override_dh_install:
-	make DESTDIR=$(TMP) PREFIX=/usr install
-
-# BBB: compat < 10 ; https://bugs.debian.org/879727
-override_dh_systemd_start:
-	dh_systemd_start --restart-after-upgrade
-	sed -i 's/_dh_action=try-restart/_dh_action=restart; for x in re6stnet re6st-registry; do systemctl is-enabled --quiet $$x.service || &; done/' debian/$(PACKAGE).postinst.debhelper
+override_dh_auto_test:

debian/compat

-9

debian/control

@@ -2,15 +2,15 @@ Source: re6stnet
 Maintainer: Julien Muchembled <jm@nexedi.com>
 Section: net
 Priority: optional
-Build-Depends: debhelper (>= 9.20120909), debhelper (>= 10) | dh-systemd, python (>= 2.7), python-setuptools, python-docutils | python3-docutils
-Standards-Version: 3.9.1
-X-Python-Version: >= 2.7
+Build-Depends: debhelper-compat (= 13), pybuild-plugin-pyproject, python3, python3-hatchling, python3-docutils
+Standards-Version: 4.7.0
+X-Python3-Version: >= 3.11
 
 Package: re6stnet
 Architecture: all
-Depends: ${misc:Depends}, ${python:Depends}, python-pkg-resources, python-openssl (>= 0.13), openvpn (>= 2.4), openpvn (<< 2.5~), babeld (= v1.12.1-nxd3), iproute2 | iproute, openssl
-Recommends: ${python:Recommends}, logrotate
-Suggests: ${python:Suggests}, ndisc6
+Depends: ${misc:Depends}, ${python3:Depends}, python3-openssl (>= 0.13), openvpn (>= 2.4), openpvn (<< 2.5~), babeld (= 1.12.1+nxd3), iproute2, openssl
+Recommends: ${python3:Recommends}, logrotate
+Suggests: ${python3:Suggests}, ndisc6
 Conflicts: re6st-node
 Replaces: re6st-node
 Description: resilient, scalable, IPv6 network application

debian/rules

@@ -2,7 +2,7 @@
 # -*- makefile -*-
 #export DH_VERBOSE=1
 
-VERSION = $(shell python re6st/version.py)
+VERSION = $(shell python3 re6st/version.py)
 
 # In order to build DEB snapshot package whose version is derived from current
 # Git revision, the `debian/changelog` file must be generated automatically,
@@ -13,15 +13,18 @@ build-package: debian/changelog
 
 include debian/common.mk
 
-override_dh_python2:
-	sed -i /^miniupnpc$$/d `find $(TMP)/usr -name requires.txt`
-	dh_python2 --recommends=miniupnpc --suggests=geoip2
+override_dh_python3:
+	dh_python3 --no-guessing-deps --recommends=miniupnpc --suggests=geoip2
 
 override_dh_auto_clean:
+	dh_auto_clean
 	make clean
 
-# Do not build twice ('setup.py install' builds automatically)
-override_dh_auto_build:
+override_dh_auto_install:
+	dh_auto_install
+	make DESTDIR=$(TMP) PREFIX=/usr install
+	find $(TMP)/usr -name 'ovpn-*' -print0 | \
+	xargs -0 sed -i "1s,.*,#!/usr/bin/python3 -S,"
 
 %:
-	dh $@ --with python2,systemd --buildsystem=python_distutils
+	dh $@ --with python3 --buildsystem=pybuild

demo/.gitignore

+dnsmasq.leases
+*.log
+*.pid
+*.db
+*.state
+*.crt
+*.pem
+/mbox
+*.sock

hatch_build.py

+import tempfile
+from hatchling.builders.hooks.plugin.interface import BuildHookInterface
+from hatchling.metadata.plugin.interface import MetadataHookInterface
+
+version = {"__file__": "re6st/version.py"}
+with open(version["__file__"]) as f:
+    code = compile(f.read(), version["__file__"], 'exec')
+    exec(code, version)
+
+
+class CustomMetadataHook(MetadataHookInterface):
+
+    def update(self, metadata):
+        metadata['version'] = egg_version = "0.%(revision)s" % version
+        metadata['readme'] = {
+            'content-type': 'text/x-rst',
+            'text': ".. contents::\n\n" + open('README.rst').read()
+                    + "\n" + open('CHANGES.rst').read() + """
+
+Git Revision: %s == %s
+""" % (egg_version, version["short"]),
+        }
+
+
+class CustomBuildHook(BuildHookInterface):
+
+    def initialize(self, _, build_data):
+        f = self.__version = tempfile.NamedTemporaryFile('w')
+        for x in sorted(version.items()):
+            if not x[0].startswith("_"):
+                f.write("%s = %r\n" % x)
+        f.flush()
+        build_data["force_include"][f.name] = version["__file__"]
+
+    def finalize(self, *_):
+        self.__version.close()

pyproject.toml

+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "re6stnet"
+description = "Resilient, Scalable, IPv6 Network"
+authors = [
+  { name = "Nexedi", email = "re6stnet@erp5.org" },
+]
+license = { text = "GPL-2.0-or-later" }
+classifiers = [
+  "Environment :: Console",
+  "Operating System :: POSIX :: Linux",
+  "Topic :: Internet",
+  "Topic :: System :: Networking",
+]
+requires-python = ">= 3.11"
+dependencies = [
+  "pyOpenSSL >= 0.13",
+  "miniupnpc",
+]
+dynamic = ["readme", "version"]
+
+[project.optional-dependencies]
+geoip = ["geoip2"]
+multicast = ["PyYAML"]
+test = ["mock", "nemu3", "unshare", "multiping"]
+
+[project.scripts]
+re6st-conf = "re6st.cli.conf:main"
+re6stnet = "re6st.cli.node:main"
+re6st-registry = "re6st.cli.registry:main"
+
+[project.urls]
+Homepage = "http://re6st.net"
+
+[tool.hatch.metadata.hooks.custom]
+
+[tool.hatch.build.hooks.custom]
+
+[tool.hatch.build]
+include = [
+  "/re6st",
+  "/docs",
+  "/*.rst",
+]
+exclude = [
+  "/re6st/tests",
+]
+
+[tool.hatch.build.targets.wheel]
+only-packages = true

setup.py

-"""Resilient, Scalable, IPv6 Network
-"""
-import os, stat
-from distutils.command.build_scripts import first_line_re
-from setuptools import setup, find_packages
-from setuptools.command import sdist as _sdist, build_py as _build_py
-from distutils import log
-
-version = {"__file__": "re6st/version.py"}
-with open(version["__file__"]) as f:
-    code = compile(f.read(), version["__file__"], 'exec')
-    exec(code, version)
-
-def copy_file(self, infile, outfile, *args, **kw):
-    if infile == version["__file__"]:
-        if not self.dry_run:
-            log.info("generating %s -> %s", infile, outfile)
-            with open(outfile, "w") as f:
-                for x in sorted(version.items()):
-                    if not x[0].startswith("_"):
-                        f.write("%s = %r\n" % x)
-        return outfile, 1
-    elif isinstance(self, build_py) and \
-         os.stat(infile).st_mode & stat.S_IEXEC:
-        if os.path.isdir(infile) and os.path.isdir(outfile):
-            return outfile, 0
-        # Adjust interpreter of OpenVPN hooks.
-        with open(infile) as src:
-            first_line = src.readline()
-            m = first_line_re.match(first_line)
-            if m and not self.dry_run:
-                log.info("copying and adjusting %s -> %s", infile, outfile)
-                executable = self.distribution.command_obj['build'].executable
-                patched = "#!%s%s\n" % (executable, m.group(1) or '')
-                patched += src.read()
-                dst = os.open(outfile, os.O_CREAT | os.O_WRONLY | os.O_TRUNC)
-                try:
-                    os.write(dst, patched.encode())
-                finally:
-                    os.close(dst)
-                return outfile, 1
-    cls, = self.__class__.__bases__
-    return cls.copy_file(self, infile, outfile, *args, **kw)
-
-class build_py(_build_py.build_py):
-    copy_file = copy_file
-
-class sdist(_sdist.sdist):
-    copy_file = copy_file
-
-classifiers = """\
-Environment :: Console
-License :: OSI Approved :: GNU General Public License (GPL)
-Natural Language :: English
-Operating System :: POSIX :: Linux
-Programming Language :: Python :: 3
-Programming Language :: Python :: 3.11
-Topic :: Internet
-Topic :: System :: Networking
-"""
-
-egg_version = "0.%(revision)s" % version
-
-git_rev = """
-
-Git Revision: %s == %s
-""" % (egg_version, version["short"])
-
-setup(
-    name = 're6stnet',
-    version = egg_version,
-    description = __doc__.strip(),
-    author = 'Nexedi',
-    author_email = 're6stnet@erp5.org',
-    url = 'http://re6st.net',
-    license = 'GPL 2+',
-    platforms = ["any"],
-    classifiers=classifiers.splitlines(),
-    python_requires = '>=3.11',
-    long_description = ".. contents::\n\n" + open('README.rst').read()
-                     + "\n" + open('CHANGES.rst').read() + git_rev,
-    packages = find_packages(),
-    entry_points = {
-        'console_scripts': [
-            're6st-conf=re6st.cli.conf:main',
-            're6stnet=re6st.cli.node:main',
-            're6st-registry=re6st.cli.registry:main',
-        ],
-    },
-    package_data = {
-        're6st': [
-            'ovpn-server',
-            'ovpn-client',
-        ],
-    },
-    # BBB: use MANIFEST.in only so that egg_info works with very old setuptools
-    include_package_data = True,
-    install_requires = ['pyOpenSSL >= 0.13', 'miniupnpc'],
-    extras_require = {
-        'geoip': ['geoip2'],
-        'multicast': ['PyYAML'],
-        'test': ['mock', 'nemu3', 'unshare', 'multiping']
-    },
-    #dependency_links = [
-    #    "http://miniupnp.free.fr/files/download.php?file=miniupnpc-1.7.20120714.tar.gz#egg=miniupnpc-1.7",
-    #    ],
-    zip_safe = False,
-    cmdclass=dict(build_py=build_py, sdist=sdist),
-)