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# Copyright © 2012-2020 Piotr Ożarowski <piotr@debian.org> # © 2020 Scott Kitterman <scott@kitterman.com> # © 2021 Stuart Prescott <stuart@debian.org> # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files (the "Software"), to deal # in the Software without restriction, including without limitation the rights # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell # copies of the Software, and to permit persons to whom the Software is # furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in # all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN # THE SOFTWARE. from pathlib import Path import logging import os.path as osp import shutil import sysconfig try: import tomli except ModuleNotFoundError: # Plugin still works, only needed for autodetection pass try: from installer import install from installer.destinations import SchemeDictionaryDestination from installer.sources import WheelFile except ModuleNotFoundError: SchemeDictionaryDestination = WheelFile = install = None from dhpython.build.base import Base, shell_command log = logging.getLogger('dhpython') class BuildSystem(Base): DESCRIPTION = 'Generic PEP517 build system' SUPPORTED_INTERPRETERS = {'python3', 'python{version}'} REQUIRED_FILES = ['pyproject.toml'] OPTIONAL_FILES = {} CLEAN_FILES = Base.CLEAN_FILES | {'build'} def detect(self, context): """Return certainty level that this plugin describes the right build system This method uses cls.{REQUIRED}_FILES (pyroject.toml) only; any other PEP517 compliant builder (such as the flit) builder should indicate higher specificity than this plugin. :return: 0 <= certainty <= 100 :rtype: int """ result = super().detect(context) # Temporarily reduce the threshold while we're in beta result -= 20 try: with open('pyproject.toml', 'rb') as f: pyproject = tomli.load(f) if pyproject.get('build-system', {}).get('build-backend'): result += 10 else: # Not a PEP517 built package result = 0 except NameError: # No toml, no autdetection result = 0 except FileNotFoundError: # Not a PEP517 package result = 0 if result > 100: return 100 return result def clean(self, context, args): super().clean(context, args) if osp.exists(args['interpreter'].binary()): log.debug("removing '%s' (and everything under it)", args['build_dir']) osp.isdir(args['build_dir']) and shutil.rmtree(args['build_dir']) return 0 # no need to invoke anything def configure(self, context, args): if install is None: raise Exception("PEP517 plugin dependencies are not available. " "Please Build-Depend on pybuild-plugin-pyproject.") # No separate configure step return 0 def build(self, context, args): self.build_step1(context, args) self.build_step2(context, args) @shell_command def build_step1(self, context, args): """ build a wheel using the PEP517 builder defined by upstream """ log.info('Building wheel for %s with "build" module', args['interpreter']) context['ENV']['FLIT_NO_NETWORK'] = '1' context['ENV']['HOME'] = args['home_dir'] return ('{interpreter} -m build ' '--skip-dependency-check --no-isolation --wheel ' '--outdir ' + args['home_dir'] + ' {args}' ) def build_step2(self, context, args): """ unpack the wheel into pybuild's normal """ log.info('Unpacking wheel built for %s with "installer" module', args['interpreter']) extras = {} for extra in ('scripts', 'data'): path = Path(args["home_dir"]) / extra if osp.exists(path): log.warning(f'{extra.title()} directory already exists, ' 'skipping unpack. ' 'Is the Python package being built twice?') return extras[extra] = path destination = SchemeDictionaryDestination( { 'platlib': args['build_dir'], 'purelib': args['build_dir'], 'scripts': extras['scripts'], 'data': extras['data'], }, interpreter=args['interpreter'].binary_dv, script_kind='posix', ) # FIXME this next step will unpack every single wheel file it finds # which is probably ok since each wheel is built in a separate # directory; but perhaps it should only accept the correctly named # wheels that match the current interpreter? # python-packaging has relevant utilities in # - packaging/utils.py::parse_wheel_filename # - packaging/tags.py (although it is current-interpreter-centric) wheels = Path(args['home_dir']).glob('*.whl') for wheel in wheels: if wheel.name.startswith('UNKNOWN'): raise Exception(f'UNKNOWN wheel found: {wheel.name}. Does ' 'pyproject.toml specify a build-backend?') with WheelFile.open(wheel) as source: install( source=source, destination=destination, additional_metadata={}, ) def install(self, context, args): log.info('Copying package built for %s to destdir', args['interpreter']) try: paths = sysconfig.get_paths(scheme='deb_system') except KeyError: # Debian hasn't patched sysconfig schemes until 3.10 # TODO: Introduce a version check once sysconfig is patched. paths = sysconfig.get_paths(scheme='posix_prefix') # start by copying the data and scripts for extra in ('data', 'scripts'): src_dir = Path(args['home_dir']) / extra if not src_dir.exists(): continue target_dir = args['destdir'] + paths[extra] log.debug('Copying %s directory contents from %s -> %s', extra, src_dir, target_dir) shutil.copytree( src_dir, target_dir, dirs_exist_ok=True, ) # then copy the modules module_dir = args['build_dir'] target_dir = args['destdir'] + args['install_dir'] log.debug('Copying module contents from %s -> %s', module_dir, target_dir) shutil.copytree( module_dir, target_dir, dirs_exist_ok=True, ) @shell_command def test(self, context, args): scripts = Path(args["home_dir"]) / 'scripts' if scripts.exists(): context['ENV']['PATH'] = f"{scripts}:{context['ENV']['PATH']}" context['ENV']['HOME'] = args['home_dir'] return super().test(context, args)