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How to use perform_isolated_build method in tox

Best Python code snippet using tox_python

isolated.py

Source:isolated.py

...31    if build_requires_dep:32        with package_venv.new_action("build_requires", package_venv.envconfig.envdir) as action:33            package_venv.run_install_command(packages=build_requires_dep, action=action)34        package_venv.finishvenv()35    return perform_isolated_build(build_info, package_venv, config.distdir, config.setupdir)36def get_build_info(folder):37    toml_file = folder.join("pyproject.toml")38    # as per https://www.python.org/dev/peps/pep-0517/39    def abort(message):40        reporter.error("{} inside {}".format(message, toml_file))41        raise SystemExit(1)42    if not toml_file.exists():43        reporter.error("missing {}".format(toml_file))44        raise SystemExit(1)45    config_data = get_py_project_toml(toml_file)46    if "build-system" not in config_data:47        abort("build-system section missing")48    build_system = config_data["build-system"]49    if "requires" not in build_system:50        abort("missing requires key at build-system section")51    if "build-backend" not in build_system:52        abort("missing build-backend key at build-system section")53    requires = build_system["requires"]54    if not isinstance(requires, list) or not all(isinstance(i, six.text_type) for i in requires):55        abort("requires key at build-system section must be a list of string")56    backend = build_system["build-backend"]57    if not isinstance(backend, six.text_type):58        abort("build-backend key at build-system section must be a string")59    args = backend.split(":")60    module = args[0]61    obj = args[1] if len(args) > 1 else ""62    return BuildInfo(requires, module, obj)63def perform_isolated_build(build_info, package_venv, dist_dir, setup_dir):64    with package_venv.new_action(65        "perform-isolated-build", package_venv.envconfig.envdir66    ) as action:67        # need to start with an empty (but existing) source distribution folder68        if dist_dir.exists():69            dist_dir.remove(rec=1, ignore_errors=True)70        dist_dir.ensure_dir()71        result = package_venv._pcall(72            [73                package_venv.envconfig.envpython,74                BUILD_ISOLATED,75                str(dist_dir),76                build_info.backend_module,77                build_info.backend_object,...

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