build and ci: migrate to pyproject.toml / hatchling

This follows along the migration in Indico 3.3.4.

.github/workflows/ci.yml

@@ -60,7 +60,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: ${{ steps.pip-cache.outputs.dir }}
-          key: pip|${{ runner.os }}|3.12|${{ hashFiles('**/setup.cfg') }}
+          key: pip|${{ runner.os }}|3.12|${{ hashFiles('**/pyproject.toml') }}
 
       - uses: actions/cache@v4
         id: cache-npm
@@ -128,9 +128,6 @@ jobs:
           echo "VIRTUAL_ENV=$(pwd)/.venv" >> $GITHUB_ENV
           echo "$(pwd)/.venv/bin" >> $GITHUB_PATH
 
-      - name: Check manifests
-        run: python .github/utils/check_manifests.py
-
       - name: Check import sorting
         if: success() || failure()
         run: isort --diff --check-only .

hatch_build.py

@@ -0,0 +1,58 @@
+# This file is part of the Indico plugin indico-sso-group-mapping.
+# Copyright (C) 2022 - 2024 University of Bonn
+#
+# The Indico plugin indico-sso-group-mapping is free software; you can
+# redistribute it and/or modify it under the terms of the MIT License;
+# see the LICENSE file for more details.
+
+import json
+import os
+import subprocess
+from contextlib import contextmanager
+from pathlib import Path
+
+from hatchling.builders.hooks.plugin.interface import BuildHookInterface
+
+
+class CustomBuildHook(BuildHookInterface):
+    def initialize(self, version, build_data):
+        if os.environ.get('READTHEDOCS') == 'True' or version == 'editable':
+            return
+        if translations_dir := next(Path().glob('indico_*/translations/'), None):
+            _compile_languages(translations_dir)
+            _compile_languages_react(translations_dir)
+
+
+def _compile_languages(translations_dir: Path):
+    from babel.messages.frontend import CompileCatalog
+    if not any(translations_dir.glob('**/*.po')):
+        return
+    cmd = CompileCatalog()
+    cmd.directory = translations_dir
+    cmd.finalize_options()
+    cmd.use_fuzzy = True
+    cmd.run()
+
+
+def _compile_languages_react(translations_dir: Path):
+    # we assume a ..../indico/{src,plugins/whatever}/ structure for indico and plugin repos
+    indico_root = Path('../../../src/').absolute().resolve()
+    for subdir in translations_dir.absolute().iterdir():
+        po_file = subdir / 'LC_MESSAGES' / 'messages-react.po'
+        json_file = subdir / 'LC_MESSAGES' / 'messages-react.json'
+        if not po_file.exists():
+            continue
+        with _chdir(indico_root):
+            output = subprocess.check_output(['npx', 'react-jsx-i18n', 'compile', po_file], stderr=subprocess.DEVNULL)
+        json.loads(output)  # just to be sure the JSON is valid
+        json_file.write_bytes(output)
+
+
+@contextmanager
+def _chdir(path: Path):
+    old_path = Path.cwd()
+    os.chdir(path)
+    try:
+        yield
+    finally:
+        os.chdir(old_path)

pyproject.toml

@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: MIT
+
+[project]
+name = 'indico-sso-group-mapping'
+description = 'SSO group mapping plugin for Indico'
+readme = 'README.md'
+version = '1.0.2'
+license = 'MIT'
+authors = [{ name = 'University of Bonn' }]
+classifiers = [
+    'Environment :: Plugins',
+    'Environment :: Web Environment',
+    'License :: OSI Approved :: MIT License',
+    'Programming Language :: Python :: 3.12',
+]
+requires-python = '>=3.12.2, <3.13'
+dependencies = ['indico>=3.3']
+
+[project.urls]
+GitHub = 'https://github.com/unibonn/indico-sso-group-mapping'
+
+[project.entry-points.'indico.plugins']
+sso_group_mapping = indico_sso_group_mapping.plugin:SSOGroupMappingPlugin
+
+[build-system]
+requires = ['hatchling==1.25.0']
+build-backend = 'hatchling.build'
+
+[tool.hatch.build]
+packages = ['indico_sso_group_mapping']
+exclude = [
+    '*.no-header',
+    '.keep',
+    # exclude original client sources (they are all included in source maps anyway)
+    'indico_*/client/',
+    # no need for tests outside development
+    'test_snapshots/',
+    'tests/',
+    '*_test.py',
+]
+artifacts = [
+    'indico_*/translations/**/messages-react.json',
+    'indico_*/translations/**/*.mo',
+    'indico_*/static/dist/',
+]
+
+[tool.hatch.build.targets.sdist.hooks.custom]
+path = 'hatch_build.py'
+dependencies = ['babel==2.16.0']