--- a/lib/python3.8/site-packages/setuptools/command/build_py.py	Mon Jul 27 03:47:31 2020 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,270 +0,0 @@
-from glob import glob
-from distutils.util import convert_path
-import distutils.command.build_py as orig
-import os
-import fnmatch
-import textwrap
-import io
-import distutils.errors
-import itertools
-
-from setuptools.extern import six
-from setuptools.extern.six.moves import map, filter, filterfalse
-
-try:
-    from setuptools.lib2to3_ex import Mixin2to3
-except ImportError:
-
-    class Mixin2to3:
-        def run_2to3(self, files, doctests=True):
-            "do nothing"
-
-
-class build_py(orig.build_py, Mixin2to3):
-    """Enhanced 'build_py' command that includes data files with packages
-
-    The data files are specified via a 'package_data' argument to 'setup()'.
-    See 'setuptools.dist.Distribution' for more details.
-
-    Also, this version of the 'build_py' command allows you to specify both
-    'py_modules' and 'packages' in the same setup operation.
-    """
-
-    def finalize_options(self):
-        orig.build_py.finalize_options(self)
-        self.package_data = self.distribution.package_data
-        self.exclude_package_data = (self.distribution.exclude_package_data or
-                                     {})
-        if 'data_files' in self.__dict__:
-            del self.__dict__['data_files']
-        self.__updated_files = []
-        self.__doctests_2to3 = []
-
-    def run(self):
-        """Build modules, packages, and copy data files to build directory"""
-        if not self.py_modules and not self.packages:
-            return
-
-        if self.py_modules:
-            self.build_modules()
-
-        if self.packages:
-            self.build_packages()
-            self.build_package_data()
-
-        self.run_2to3(self.__updated_files, False)
-        self.run_2to3(self.__updated_files, True)
-        self.run_2to3(self.__doctests_2to3, True)
-
-        # Only compile actual .py files, using our base class' idea of what our
-        # output files are.
-        self.byte_compile(orig.build_py.get_outputs(self, include_bytecode=0))
-
-    def __getattr__(self, attr):
-        "lazily compute data files"
-        if attr == 'data_files':
-            self.data_files = self._get_data_files()
-            return self.data_files
-        return orig.build_py.__getattr__(self, attr)
-
-    def build_module(self, module, module_file, package):
-        if six.PY2 and isinstance(package, six.string_types):
-            # avoid errors on Python 2 when unicode is passed (#190)
-            package = package.split('.')
-        outfile, copied = orig.build_py.build_module(self, module, module_file,
-                                                     package)
-        if copied:
-            self.__updated_files.append(outfile)
-        return outfile, copied
-
-    def _get_data_files(self):
-        """Generate list of '(package,src_dir,build_dir,filenames)' tuples"""
-        self.analyze_manifest()
-        return list(map(self._get_pkg_data_files, self.packages or ()))
-
-    def _get_pkg_data_files(self, package):
-        # Locate package source directory
-        src_dir = self.get_package_dir(package)
-
-        # Compute package build directory
-        build_dir = os.path.join(*([self.build_lib] + package.split('.')))
-
-        # Strip directory from globbed filenames
-        filenames = [
-            os.path.relpath(file, src_dir)
-            for file in self.find_data_files(package, src_dir)
-        ]
-        return package, src_dir, build_dir, filenames
-
-    def find_data_files(self, package, src_dir):
-        """Return filenames for package's data files in 'src_dir'"""
-        patterns = self._get_platform_patterns(
-            self.package_data,
-            package,
-            src_dir,
-        )
-        globs_expanded = map(glob, patterns)
-        # flatten the expanded globs into an iterable of matches
-        globs_matches = itertools.chain.from_iterable(globs_expanded)
-        glob_files = filter(os.path.isfile, globs_matches)
-        files = itertools.chain(
-            self.manifest_files.get(package, []),
-            glob_files,
-        )
-        return self.exclude_data_files(package, src_dir, files)
-
-    def build_package_data(self):
-        """Copy data files into build directory"""
-        for package, src_dir, build_dir, filenames in self.data_files:
-            for filename in filenames:
-                target = os.path.join(build_dir, filename)
-                self.mkpath(os.path.dirname(target))
-                srcfile = os.path.join(src_dir, filename)
-                outf, copied = self.copy_file(srcfile, target)
-                srcfile = os.path.abspath(srcfile)
-                if (copied and
-                        srcfile in self.distribution.convert_2to3_doctests):
-                    self.__doctests_2to3.append(outf)
-
-    def analyze_manifest(self):
-        self.manifest_files = mf = {}
-        if not self.distribution.include_package_data:
-            return
-        src_dirs = {}
-        for package in self.packages or ():
-            # Locate package source directory
-            src_dirs[assert_relative(self.get_package_dir(package))] = package
-
-        self.run_command('egg_info')
-        ei_cmd = self.get_finalized_command('egg_info')
-        for path in ei_cmd.filelist.files:
-            d, f = os.path.split(assert_relative(path))
-            prev = None
-            oldf = f
-            while d and d != prev and d not in src_dirs:
-                prev = d
-                d, df = os.path.split(d)
-                f = os.path.join(df, f)
-            if d in src_dirs:
-                if path.endswith('.py') and f == oldf:
-                    continue  # it's a module, not data
-                mf.setdefault(src_dirs[d], []).append(path)
-
-    def get_data_files(self):
-        pass  # Lazily compute data files in _get_data_files() function.
-
-    def check_package(self, package, package_dir):
-        """Check namespace packages' __init__ for declare_namespace"""
-        try:
-            return self.packages_checked[package]
-        except KeyError:
-            pass
-
-        init_py = orig.build_py.check_package(self, package, package_dir)
-        self.packages_checked[package] = init_py
-
-        if not init_py or not self.distribution.namespace_packages:
-            return init_py
-
-        for pkg in self.distribution.namespace_packages:
-            if pkg == package or pkg.startswith(package + '.'):
-                break
-        else:
-            return init_py
-
-        with io.open(init_py, 'rb') as f:
-            contents = f.read()
-        if b'declare_namespace' not in contents:
-            raise distutils.errors.DistutilsError(
-                "Namespace package problem: %s is a namespace package, but "
-                "its\n__init__.py does not call declare_namespace()! Please "
-                'fix it.\n(See the setuptools manual under '
-                '"Namespace Packages" for details.)\n"' % (package,)
-            )
-        return init_py
-
-    def initialize_options(self):
-        self.packages_checked = {}
-        orig.build_py.initialize_options(self)
-
-    def get_package_dir(self, package):
-        res = orig.build_py.get_package_dir(self, package)
-        if self.distribution.src_root is not None:
-            return os.path.join(self.distribution.src_root, res)
-        return res
-
-    def exclude_data_files(self, package, src_dir, files):
-        """Filter filenames for package's data files in 'src_dir'"""
-        files = list(files)
-        patterns = self._get_platform_patterns(
-            self.exclude_package_data,
-            package,
-            src_dir,
-        )
-        match_groups = (
-            fnmatch.filter(files, pattern)
-            for pattern in patterns
-        )
-        # flatten the groups of matches into an iterable of matches
-        matches = itertools.chain.from_iterable(match_groups)
-        bad = set(matches)
-        keepers = (
-            fn
-            for fn in files
-            if fn not in bad
-        )
-        # ditch dupes
-        return list(_unique_everseen(keepers))
-
-    @staticmethod
-    def _get_platform_patterns(spec, package, src_dir):
-        """
-        yield platform-specific path patterns (suitable for glob
-        or fn_match) from a glob-based spec (such as
-        self.package_data or self.exclude_package_data)
-        matching package in src_dir.
-        """
-        raw_patterns = itertools.chain(
-            spec.get('', []),
-            spec.get(package, []),
-        )
-        return (
-            # Each pattern has to be converted to a platform-specific path
-            os.path.join(src_dir, convert_path(pattern))
-            for pattern in raw_patterns
-        )
-
-
-# from Python docs
-def _unique_everseen(iterable, key=None):
-    "List unique elements, preserving order. Remember all elements ever seen."
-    # unique_everseen('AAAABBBCCDAABBB') --> A B C D
-    # unique_everseen('ABBCcAD', str.lower) --> A B C D
-    seen = set()
-    seen_add = seen.add
-    if key is None:
-        for element in filterfalse(seen.__contains__, iterable):
-            seen_add(element)
-            yield element
-    else:
-        for element in iterable:
-            k = key(element)
-            if k not in seen:
-                seen_add(k)
-                yield element
-
-
-def assert_relative(path):
-    if not os.path.isabs(path):
-        return path
-    from distutils.errors import DistutilsSetupError
-
-    msg = textwrap.dedent("""
-        Error: setup script specifies an absolute path:
-
-            %s
-
-        setup() arguments must *always* be /-separated paths relative to the
-        setup.py directory, *never* absolute paths.
-        """).lstrip() % path
-    raise DistutilsSetupError(msg)