Adopt pyproject.toml and Meson to build Python extension

.editorconfig

@@ -0,0 +1,3 @@
+[meson.build]
+indent_style = space
+indent_size = 8

.github/workflows/build.yml

@@ -2,7 +2,7 @@
 # vi: ts=2 sw=2 et:
 # SPDX-License-Identifier: LGPL-2.1-or-later
 #
-name: Build test
+name: Build
 on:
   pull_request:
   push:
@@ -14,27 +14,35 @@ permissions:
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
-    concurrency:
-      group: ${{ github.workflow }}-${{ matrix.python }}-${{ github.ref }}
-      cancel-in-progress: true
     strategy:
       fail-fast: false
       matrix:
+        os: ["ubuntu-22.04", "ubuntu-24.04"]
         python: [
           "3.7",
           "3.8",
           "3.9",
           "3.10",
-          "3.11.0-rc.1",
+          "3.11",
+          "3.12",
+          "3.13",
         ]
-    name: Python ${{ matrix.python }}
+        exclude:
+          - os: "ubuntu-22.04"
+            python: "3.13"
+          - os: "ubuntu-24.04"
+            python: "3.7"
+    runs-on: ${{ matrix.os }}
+    concurrency:
+      group: ${{ github.workflow }}-${{ matrix.python }}-${{ matrix.os }}-${{ github.ref }}
+      cancel-in-progress: true
+    name: Python ${{ matrix.python }} on ${{ matrix.os }}
     steps:
       - name: Repository checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Configure Python ${{ matrix.python }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python }}
           architecture: x64
@@ -43,14 +51,21 @@ jobs:
         run: |
           sudo apt -y update
           sudo apt -y install gcc libsystemd-dev
-          python -m pip install pytest sphinx
+          python -m pip install -U --break-system-packages pip build
 
+      - name: Install Sphinx (old pip)
+        if: ${{ matrix.python == '3.7' || matrix.python == '3.8' }}
+        run: python -m pip install sphinx
+
+      - name: Install Sphinx (new pip)
+        if: ${{ matrix.python != '3.7' && matrix.python != '3.8' }}
+        run: python -m pip install --group docs
+
+      # Note: The `pip install --group` is available on pip v25+
       - name: Build (Python ${{ matrix.python }})
         run: |
           set -x
-          make -j
-          make doc SPHINXOPTS="-W -v"
-
-      - name: Test (Python ${{ matrix.python }})
-        run: |
-          make check
+          python -m build -Cbuild-dir=build
+          python -m pip install .
+          cd build
+          python -m sphinx -b html -W -v ../docs html

.github/workflows/codeql.yml

@@ -18,7 +18,7 @@ permissions:
 jobs:
   analyze:
     name: Analyze
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     concurrency:
       group: ${{ github.workflow }}-${{ matrix.language }}-${{ github.ref }}
       cancel-in-progress: true
@@ -33,10 +33,10 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v2
+        uses: github/codeql-action/init@v3
         with:
           languages: ${{ matrix.language }}
           queries: +security-extended,security-and-quality
@@ -45,9 +45,10 @@ jobs:
         run: |
           sudo apt -y update
           sudo apt -y install gcc libsystemd-dev
+          python -m pip install -U --break-system-packages pip build
 
       - name: Autobuild
-        uses: github/codeql-action/autobuild@v2
+        uses: github/codeql-action/autobuild@v3
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v2
+        uses: github/codeql-action/analyze@v3

.github/workflows/install.yml

@@ -2,7 +2,7 @@
 # vi: ts=2 sw=2 et:
 # SPDX-License-Identifier: LGPL-2.1-or-later
 #
-name: Install test
+name: Install then test
 on:
   pull_request:
   push:
@@ -24,16 +24,14 @@ jobs:
         container: [
             "archlinux:latest",
             "debian:testing",
-            "quay.io/centos/centos:stream8",
+            "quay.io/centos/centos:stream10",
             "quay.io/fedora/fedora:rawhide",
-            "ubuntu:focal",
+            "ubuntu:noble",
         ]
     container:
       image: ${{ matrix.container }}
     name: ${{ matrix.container }}
     steps:
-      - name: Repository checkout
-        uses: actions/checkout@v2
 
       - name: Install dependencies
         shell: bash
@@ -51,10 +49,14 @@ jobs:
 
           case "$DIST_ID" in
           arch)
-              pacman --noconfirm -Sy "${DEPS_COMMON[@]}" systemd-libs
-              python3 -m ensurepip
+              pacman --noconfirm -Sy -u "${DEPS_COMMON[@]}" systemd-libs python-pip
+              ;;
+          centos)
+              dnf config-manager --set-enabled crb
+              dnf install -y epel-release
+              dnf -y install "${DEPS_COMMON[@]}" systemd-devel python3-devel python3-pip
               ;;
-          centos|fedora)
+          fedora)
               dnf -y install "${DEPS_COMMON[@]}" systemd-devel python3-devel python3-pip
               ;;
           ubuntu|debian)
@@ -66,14 +68,22 @@ jobs:
               exit 1
           esac
 
-          python3 -m pip install pytest sphinx
+          python3 -m pip install -U --break-system-packages build pytest
+
+      - name: Fix Git config to satisfy Meson
+        run: git config --global safe.directory "*"
+
+      # Checkout repo after installing Git, or the "checkout" GH Action will download our source as non-Git repo, making Meson fail
+      # to build Python source dist.
+      - name: Repository checkout
+        uses: actions/checkout@v4
 
-      - name: Build & install
+      - name: Install & test
         shell: bash
         run: |
           set -x
-          python3 -m pip install -I -v .
-          # Avoid importing the systemd module from the git repository
-          cd /
+          git --version
+          python3 -m build
+          python3 -m pip install --break-system-packages .
           python3 -c 'from systemd import journal; print(journal.__version__)'
           pytest -v --pyargs systemd

.gitignore

@@ -16,6 +16,7 @@ sdist
 develop-eggs
 .installed.cfg
 MANIFEST
+.venv
 
 # Installer logs
 pip-log.txt
@@ -30,3 +31,6 @@ pip-log.txt
 
 #Mr Developer
 .mr.developer.cfg
+
+# Zed
+.zed

Makefile

@@ -3,67 +3,57 @@ SED = sed
 ETAGS = etags
 INCLUDE_DIR := $(shell pkg-config --variable=includedir libsystemd)
 INCLUDE_FLAGS := $(shell pkg-config --cflags libsystemd)
-VERSION := $(shell $(PYTHON) setup.py --version)
+VERSION := $(shell meson introspect --projectinfo build | jq -r .version)
 TESTFLAGS = -v
-
-define buildscript
-import sys, sysconfig, setuptools
-sversion = int(setuptools.__version__.split(".")[0])
-end = sys.implementation.cache_tag if sversion >= 61 else "{}.{}".format(*sys.version_info[:2])
-print("build/lib.{}-{}".format(sysconfig.get_platform(), end))
-endef
-
-builddir := $(shell $(PYTHON) -c '$(buildscript)')
+BUILD_DIR = build
 
 all: build
 
 .PHONY: update-constants
 update-constants: update-constants.py $(INCLUDE_DIR)/systemd/sd-messages.h
-	$(PYTHON) $+ systemd/id128-defines.h | \
+	$(PYTHON) $+ src/systemd/id128-defines.h | \
 	  sort -u | \
-	  tee systemd/id128-defines.h.tmp | \
+	  tee src/systemd/id128-defines.h.tmp | \
 	  $(SED) -n -r 's/,//g; s/#define (SD_MESSAGE_[A-Z0-9_]+)\s.*/add_id(m, "\1", \1) JOINER/p' | \
-	  sort -u >systemd/id128-constants.h.tmp
-	mv systemd/id128-defines.h{.tmp,}
-	mv systemd/id128-constants.h{.tmp,}
+	  sort -u > src/systemd/id128-constants.h.tmp
+	mv src/systemd/id128-defines.h{.tmp,}
+	mv src/systemd/id128-constants.h{.tmp,}
 	($(SED) 9q <docs/id128.rst && \
 	  sed -n -r 's/#define (SD_MESSAGE_[A-Z0-9_]+) .*/   .. autoattribute:: systemd.id128.\1/p' \
-	  systemd/id128-defines.h) >docs/id128.rst.tmp
+	  src/systemd/id128-defines.h) >docs/id128.rst.tmp
 	mv docs/id128.rst{.tmp,}
 
 build:
-	$(PYTHON) setup.py build_ext $(INCLUDE_FLAGS)
-	$(PYTHON) setup.py build
+	$(PYTHON) -m build -Cbuild-dir=$(BUILD_DIR)
 
 install:
-	$(PYTHON) setup.py install --skip-build $(if $(DESTDIR),--root $(DESTDIR))
+	$(PYTHON) -m pip install .
 
 dist:
-	$(PYTHON) setup.py sdist
+	$(PYTHON) -m build --sdist
 
 sign: dist/systemd-python-$(VERSION).tar.gz
 	gpg --detach-sign -a dist/systemd-python-$(VERSION).tar.gz
 
 clean:
-	rm -rf build systemd/*.so systemd/*.py[co] *.py[co] systemd/__pycache__
+	rm -rf $(BUILD_DIR) systemd/*.so systemd/*.py[co] *.py[co] systemd/__pycache__
 
 distclean: clean
 	rm -rf dist MANIFEST
 
 SPHINXOPTS += -D version=$(VERSION) -D release=$(VERSION)
-sphinx-%: build
-	cd build && \
-	  PYTHONPATH=../$(builddir) $(PYTHON) -m sphinx -b $* $(SPHINXOPTS) ../docs $*
-	@echo Output has been generated in build/$*
+sphinx-%: install
+	mkdir $(BUILD_DIR) && cd $(BUILD_DIR) && $(PYTHON) -m sphinx -b $* $(SPHINXOPTS) ../docs $*
+	@echo Output has been generated in $(BUILD_DIR)/$*
 
 doc: sphinx-html
 
-check: build
-	(cd $(builddir) && $(PYTHON) -m pytest . ../../docs $(TESTFLAGS))
+check: build install
+	($(PYTHON) -m pytest src/systemd/test docs $(TESTFLAGS))
 
 www_target = www.freedesktop.org:/srv/www.freedesktop.org/www/software/systemd/python-systemd
 doc-sync:
-	rsync -rlv --delete --omit-dir-times build/html/ $(www_target)/
+	rsync -rlv --delete --omit-dir-times $(BUILD_DIR)/html/ $(www_target)/
 
 upload: dist/systemd-python-$(VERSION).tar.gz dist/systemd-python-$(VERSION).tar.gz.asc
 	twine-3 upload $+
@@ -72,7 +62,6 @@ TAGS: $(shell git ls-files systemd/*.[ch])
 	$(ETAGS) $+
 
 shell:
-# we change the directory because python insists on adding $CWD to path
-	(cd $(builddir) && $(PYTHON))
+	$(PYTHON)
 
 .PHONY: build install dist sign upload clean distclean TAGS doc doc-sync shell

README.md

@@ -199,7 +199,8 @@ Quick way to view output with all fields as it comes in:
 Test Builds (for Development)
 =============================
 
-    python setup.py build_ext -i
+    python -m build
+    python -m pip install .
     python
     >>> from systemd import journal
     >>> journal.send("Test")

meson.build

@@ -0,0 +1,22 @@
+project(
+        'python-systemd',
+        'c',
+        version: '236',
+        license: 'LGPL-2.1-or-later',
+        default_options: ['warning_level=2', 'c_std=c99'],
+        meson_version: '>= 1.8.0',
+)
+
+# Dependencies
+python = import('python').find_installation('python3', pure: false)
+python_dep = python.dependency()
+
+libsystemd_dep = dependency('libsystemd')
+
+common_c_args = [
+        '-DPACKAGE_VERSION="@0@"'.format(meson.project_version()),
+        '-DLIBSYSTEMD_VERSION=@0@'.format(libsystemd_dep.version()),
+]
+
+subdir('src')
+

pyproject.toml

@@ -0,0 +1,61 @@
+[project]
+name = "systemd-python"
+dynamic = ["version"]
+description = "Python interface for libsystemd"
+readme = "README.md"
+license = { text = "LGPL-2.1-or-later" }
+authors = [{ email = "[email protected]" }]
+maintainers = [
+    { name = "systemd developers", email = "[email protected]" },
+]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: GNU Lesser General Public License v2 or later (LGPLv2+)",
+    "Operating System :: POSIX :: Linux",
+    "Programming Language :: C",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.7",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Topic :: System :: Logging",
+    "Topic :: System :: Systems Administration",
+]
+keywords = ["systemd", "journal", "logging", "daemon"]
+requires-python = ">=3.7"
+dependencies = []
+
+[project.urls]
+Homepage = "https://github.com/systemd/python-systemd"
+Repository = "https://github.com/systemd/python-systemd.git"
+Issues = "https://github.com/systemd/python-systemd/issues"
+Documentation = "https://www.freedesktop.org/software/systemd/python-systemd/"
+
+[dependency-groups]
+test = ["pytest", "pytest-cov"]
+docs = ["sphinx"]
+build = [
+    "meson>=1.8.2",
+    "twine>=4.0.2",
+]
+
+[build-system]
+requires = ["meson-python", "ninja", "meson"]
+build-backend = "mesonpy"
+
+[tool.coverage.run]
+source = ["systemd"]
+omit = ["systemd/test/*"]
+
+[tool.coverage.report]
+exclude_lines = [
+    "pragma: no cover",
+    "def __repr__",
+    "raise AssertionError",
+    "raise NotImplementedError",
+]