Migrate from setup.py to pyproject.toml (MR 2265)

In the process, drop the list of required python packages. This is
only needed for pip, as pmbootstrap checks by itself. This way we
avoid duplicating the minimum required version.

We also don't install the helpers anymore, as modern tooling does not
support installing things outside the python package dir

MANIFEST.in

@@ -1,4 +1,2 @@
 include LICENSE
-include helpers/envkernel.sh
-include helpers/envkernel.fish
 recursive-include pmb/data *

pyproject.toml

@@ -1,3 +1,33 @@
+[build-system]
+requires = ["setuptools>=61.0.0"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "pmbootstrap"
+dynamic = ["version"]
+authors = [
+  {name = "postmarketOS Developers", email="info@postmarketos.org"}
+]
+description = "A sophisticated chroot / build / flash tool to develop and install postmarketOS'"
+readme = "README.md"
+license = {text = "GPL-3.0-or-later"}
+
+[project.scripts]
+pmbootstrap = "pmb:main"
+
+[project.optional-dependencies]
+test = ["pytest"]
+completion = ["argcomplete"]
+
+[project.urls]
+Homepage = "https://www.postmarketos.org"
+
+[tool.setuptools.dynamic]
+version = {attr =  "pmb.__version__"}
+
+[tool.setuptools.packages.find]
+exclude = ["aports", "keys", "test", "test.pmb_test"]
+
 [tool.ruff]
 # E402: module import not on top of file, not possible for testcases
 # E722: do not use bare except

setup.py

@@ -1,76 +0,0 @@
-#!/usr/bin/env python3
-
-import re
-import ast
-import sys
-
-from setuptools import setup, find_packages
-from setuptools.command.test import test as TestCommand
-
-from codecs import open
-from os import path
-
-
-class PyTest(TestCommand):
-    user_options = [('pytest-args=', 'a', 'Arguments to pass to pytest')]
-
-    def initialize_options(self):
-        TestCommand.initialize_options(self)
-        self.pytest_args = ''
-
-    def run_tests(self):
-        import shlex
-        import pytest
-        errno = pytest.main(shlex.split(self.pytest_args))
-        sys.exit(errno)
-
-
-here = path.abspath(path.dirname(__file__))
-_version_re = re.compile(r'__version__\s+=\s+(.*)')
-
-with open(path.join(here, 'pmb/__init__.py'), 'rb') as f:
-    version = str(ast.literal_eval(_version_re.search(
-        f.read().decode('utf-8')).group(1)))
-
-with open(path.join(here, 'README.md'), encoding='utf-8') as f:
-    long_description = f.read()
-
-
-setup(
-    name='pmbootstrap',
-    version=version,
-    description='A sophisticated chroot / build / flash tool to '
-                'develop and install postmarketOS',
-    long_description=long_description,
-    long_description_content_type='text/markdown',
-    author='postmarketOS Developers',
-    author_email='info@postmarketos.org',
-    url='https://www.postmarketos.org',
-    license='GPLv3',
-    python_requires='>=3.7',
-    classifiers=[
-        'Development Status :: 5 - Production/Stable',
-        'Intended Audience :: Developers',
-        'License :: OSI Approved :: GNU General Public License v3 (GPLv3)',
-        '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',
-    ],
-    keywords='postmarketos pmbootstrap',
-    packages=find_packages(exclude=['aports', 'keys', 'test']),
-    tests_require=['pytest'],
-    cmdclass={'test': PyTest},
-    extras_require={
-        'completion': ['argcomplete'],
-    },
-    entry_points={
-        'console_scripts': [
-            'pmbootstrap=pmb:main',
-        ],
-    },
-    include_package_data=True,
-    data_files=[('share/pmbootstrap/helpers/', ['helpers/envkernel.sh', 'helpers/envkernel.fish'])],
-)