diff --git a/_distutils_system_mod.py b/_distutils_system_mod.py
deleted file mode 100644
index 43e93428..00000000
--- a/_distutils_system_mod.py
+++ /dev/null
@@ -1,121 +0,0 @@
-"""
-Apply Debian-specific patches to distutils commands and sysconfig.
-
-Extracts the customized behavior from patches as reported
-in pypa/distutils#2 and applies those customizations (except
-for scheme definitions) to those commands.
-
-Place this module somewhere in sys.path to take effect.
-"""
-
-import os
-import sys
-
-import distutils.sysconfig
-import distutils.command.install as orig_install
-import distutils.command.install_egg_info as orig_install_egg_info
-from distutils.command.install_egg_info import (
-    to_filename,
-    safe_name,
-    safe_version,
-    )
-from distutils.errors import DistutilsOptionError
-
-
-class install(orig_install.install):
-    user_options = list(orig_install.install.user_options) + [
-        ('install-layout=', None,
-         "installation layout to choose (known values: deb, unix)"),
-    ]
-
-    def initialize_options(self):
-        super().initialize_options()
-        self.prefix_option = None
-        self.install_layout = None
-
-    def finalize_unix(self):
-        self.prefix_option = self.prefix
-        super().finalize_unix()
-        if self.install_layout:
-            if self.install_layout.lower() in ['deb']:
-                self.select_scheme("deb_system")
-            elif self.install_layout.lower() in ['unix']:
-                self.select_scheme("posix_prefix")
-            else:
-                raise DistutilsOptionError(
-                    "unknown value for --install-layout")
-        elif ((self.prefix_option and
-               os.path.normpath(self.prefix) != '/usr/local')
-              or sys.base_prefix != sys.prefix
-              or 'PYTHONUSERBASE' in os.environ
-              or 'VIRTUAL_ENV' in os.environ
-              or 'real_prefix' in sys.__dict__):
-            self.select_scheme("posix_prefix")
-        else:
-            if os.path.normpath(self.prefix) == '/usr/local':
-                self.prefix = self.exec_prefix = '/usr'
-                self.install_base = self.install_platbase = '/usr'
-            self.select_scheme("posix_local")
-
-
-class install_egg_info(orig_install_egg_info.install_egg_info):
-    user_options = list(orig_install_egg_info.install_egg_info.user_options) + [
-        ('install-layout', None, "custom installation layout"),
-    ]
-
-    def initialize_options(self):
-        super().initialize_options()
-        self.prefix_option = None
-        self.install_layout = None
-
-    def finalize_options(self):
-        self.set_undefined_options('install',('install_layout','install_layout'))
-        self.set_undefined_options('install',('prefix_option','prefix_option'))
-        super().finalize_options()
-
-    @property
-    def basename(self):
-        if self.install_layout:
-            if not self.install_layout.lower() in ['deb', 'unix']:
-                raise DistutilsOptionError(
-                    "unknown value for --install-layout")
-            no_pyver = (self.install_layout.lower() == 'deb')
-        elif self.prefix_option:
-            no_pyver = False
-        else:
-            no_pyver = True
-        if no_pyver:
-            basename = "%s-%s.egg-info" % (
-                to_filename(safe_name(self.distribution.get_name())),
-                to_filename(safe_version(self.distribution.get_version()))
-                )
-        else:
-            basename = "%s-%s-py%d.%d.egg-info" % (
-                to_filename(safe_name(self.distribution.get_name())),
-                to_filename(safe_version(self.distribution.get_version())),
-                *sys.version_info[:2]
-            )
-        return basename
-
-
-def _posix_lib(standard_lib, libpython, early_prefix, prefix):
-    is_default_prefix = not early_prefix or os.path.normpath(early_prefix) in ('/usr', '/usr/local')
-    if standard_lib:
-        return libpython
-    elif (is_default_prefix and
-              'PYTHONUSERBASE' not in os.environ and
-              'VIRTUAL_ENV' not in os.environ and
-              'real_prefix' not in sys.__dict__ and
-              sys.prefix == sys.base_prefix):
-            return os.path.join(prefix, "lib", "python3", "dist-packages")
-    else:
-        return os.path.join(libpython, "site-packages")
-
-
-def apply_customizations():
-    orig_install.install = install
-    orig_install_egg_info.install_egg_info = install_egg_info
-    distutils.sysconfig._posix_lib = _posix_lib
-
-
-apply_customizations()