How to use the flit.wheel.make_wheel_in function in flit

td = copy_sample('module1_ini')

    (td / 'module1.py').chmod(0o620)
    make_wheel_in(td / 'flit.ini', td)

    whl = td / 'module1-0.1-py2.py3-none-any.whl'
    assert_isfile(whl)
    with zipfile.ZipFile(str(whl)) as zf:
        info = zf.getinfo('module1.py')
        perms = (info.external_attr >> 16) & 0o777
        assert perms == 0o644, oct(perms)
    whl.unlink()

    # This time with executable bit set
    (td / 'module1.py').chmod(0o720)
    make_wheel_in(td / 'flit.ini', td)

    assert_isfile(whl)
    with zipfile.ZipFile(str(whl)) as zf:
        info = zf.getinfo('module1.py')
        perms = (info.external_attr >> 16) & 0o777
        assert perms == 0o755, oct(perms)

def test_dist_name(copy_sample):
    td = copy_sample('altdistname')
    make_wheel_in(td / 'flit.ini', td)
    res = td / 'package_dist1-0.1-py2.py3-none-any.whl'
    assert_isfile(res)
    with unpack(res) as td_unpack:
        assert_isdir(Path(td_unpack, 'package_dist1-0.1.dist-info'))

def test_wheel_src_package(copy_sample):
    td = copy_sample('package2')
    make_wheel_in(td / 'package2-pkg.ini', td)

    whl_file = td / 'package2-0.1-py2.py3-none-any.whl'
    assert_isfile(whl_file)
    with unpack(whl_file) as unpacked:
        print(os.listdir(unpacked))
        assert_isfile(Path(unpacked, 'package2', '__init__.py'))

def test_wheel_module(copy_sample):
    td = copy_sample('module1_ini')
    make_wheel_in(td / 'flit.ini', td)
    assert_isfile(td / 'module1-0.1-py2.py3-none-any.whl')

def test_entry_points_conflict(copy_sample):
    td = copy_sample('entrypoints_conflict')
    with pytest.raises(EntryPointsConflict):
        make_wheel_in(td / 'flit.ini', td)

def test_wheel_src_module(copy_sample):
    td = copy_sample('module3')
    make_wheel_in(td / 'flit.ini', td)

    whl_file = td / 'module3-0.1-py2.py3-none-any.whl'
    assert_isfile(whl_file)
    with unpack(whl_file) as unpacked:
        assert_isfile(Path(unpacked, 'module3.py'))
        assert_isdir(Path(unpacked, 'module3-0.1.dist-info'))
        assert_isfile(Path(unpacked, 'module3-0.1.dist-info', 'LICENSE'))

def test_entry_points(copy_sample):
    td = copy_sample('entrypoints_valid')
    make_wheel_in(td / 'flit.ini', td)
    assert_isfile(td / 'package1-0.1-py2.py3-none-any.whl')
    with unpack(td / 'package1-0.1-py2.py3-none-any.whl') as td_unpack:
        entry_points = Path(td_unpack, 'package1-0.1.dist-info', 'entry_points.txt')
        assert_isfile(entry_points)
        cp = configparser.ConfigParser()
        cp.read(str(entry_points))
        assert 'console_scripts' in cp.sections()
        assert 'myplugins' in cp.sections()

def test_compression(tmp_path):
    info = make_wheel_in(samples_dir / 'module1_ini' / 'flit.ini', tmp_path)
    assert_isfile(info.file)
    with zipfile.ZipFile(str(info.file)) as zf:
        for name in [
            'module1.py',
            'module1-0.1.dist-info/METADATA',
        ]:
            assert zf.getinfo(name).compress_type == zipfile.ZIP_DEFLATED

# Load the config file to make sure it gets validated
        read_flit_config(ini_file)

        if 'sdist' in formats:
            sb = SdistBuilder.from_ini_path(ini_file)
            sdist_file = sb.build(dist_dir, gen_setup_py=gen_setup_py)
            sdist_info = SimpleNamespace(builder=sb, file=sdist_file)
            # When we're building both, build the wheel from the unpacked sdist.
            # This helps ensure that the sdist contains all the necessary files.
            if 'wheel' in formats:
                with unpacked_tarball(sdist_file) as tmpdir:
                    log.debug('Building wheel from unpacked sdist %s', tmpdir)
                    tmp_ini_file = Path(tmpdir, ini_file.name)
                    wheel_info = make_wheel_in(tmp_ini_file, dist_dir)
        elif 'wheel' in formats:
            wheel_info = make_wheel_in(ini_file, dist_dir)
    except ConfigError as e:
        sys.exit('Config error: {}'.format(e))

    return SimpleNamespace(wheel=wheel_info, sdist=sdist_info)

try:
        # Load the config file to make sure it gets validated
        read_flit_config(ini_file)

        if 'sdist' in formats:
            sb = SdistBuilder.from_ini_path(ini_file)
            sdist_file = sb.build(dist_dir, gen_setup_py=gen_setup_py)
            sdist_info = SimpleNamespace(builder=sb, file=sdist_file)
            # When we're building both, build the wheel from the unpacked sdist.
            # This helps ensure that the sdist contains all the necessary files.
            if 'wheel' in formats:
                with unpacked_tarball(sdist_file) as tmpdir:
                    log.debug('Building wheel from unpacked sdist %s', tmpdir)
                    tmp_ini_file = Path(tmpdir, ini_file.name)
                    wheel_info = make_wheel_in(tmp_ini_file, dist_dir)
        elif 'wheel' in formats:
            wheel_info = make_wheel_in(ini_file, dist_dir)
    except ConfigError as e:
        sys.exit('Config error: {}'.format(e))

    return SimpleNamespace(wheel=wheel_info, sdist=sdist_info)