diff --git a/Lib/ensurepip/__init__.py b/Lib/ensurepip/__init__.py

index 5021ebf..63c763a 100644

--- a/Lib/ensurepip/__init__.py

+++ b/Lib/ensurepip/__init__.py

@@ -7,6 +7,7 @@ import pkgutil

 import shutil

 import sys

 import tempfile

+from ensurepip import rewheel

 __all__ = ["version", "bootstrap"]

@@ -29,6 +30,8 @@ def _run_pip(args, additional_paths=None):

     # Install the bundled software

     import pip._internal

+    if args[0] in ["install", "list", "wheel"]:

+        args.append('--pre')

     return pip._internal.main(args)

@@ -93,21 +96,40 @@ def _bootstrap(root=None, upgrade=False, user=False,

         # omit pip and easy_install

         os.environ["ENSUREPIP_OPTIONS"] = "install"

+    whls = []

+    rewheel_dir = None

+    # try to see if we have system-wide versions of _PROJECTS

+    dep_records = rewheel.find_system_records([p[0] for p in _PROJECTS])

+    # TODO: check if system-wide versions are the newest ones

+    # if --upgrade is used?

+    if all(dep_records):

+        # if we have all _PROJECTS installed system-wide, we'll recreate

+        # wheels from them and install those

+        rewheel_dir = tempfile.mkdtemp()

+        for dr in dep_records:

+            new_whl = rewheel.rewheel_from_record(dr, rewheel_dir)

+            whls.append(os.path.join(rewheel_dir, new_whl))

+    else:

+        # if we don't have all the _PROJECTS installed system-wide,

+        # let's just fall back to bundled wheels

+        for project, version in _PROJECTS:

+            whl = os.path.join(

+                os.path.dirname(__file__),

+                "_bundled",

+                "{}-{}-py2.py3-none-any.whl".format(project, version)

+            )

+            whls.append(whl)

+

     tmpdir = tempfile.mkdtemp()

     try:

         # Put our bundled wheels into a temporary directory and construct the

         # additional paths that need added to sys.path

         additional_paths = []

-        for project, version in _PROJECTS:

-            wheel_name = "{}-{}-py2.py3-none-any.whl".format(project, version)

-            whl = pkgutil.get_data(

-                "ensurepip",

-                "_bundled/{}".format(wheel_name),

-            )

-            with open(os.path.join(tmpdir, wheel_name), "wb") as fp:

-                fp.write(whl)

-

-            additional_paths.append(os.path.join(tmpdir, wheel_name))

+        for whl in whls:

+            shutil.copy(whl, tmpdir)

+            additional_paths.append(os.path.join(tmpdir, os.path.basename(whl)))

+        if rewheel_dir:

+            shutil.rmtree(rewheel_dir)

         # Construct the arguments to be passed to the pip command

         args = ["install", "--no-index", "--find-links", tmpdir]

diff --git a/Lib/ensurepip/rewheel/__init__.py b/Lib/ensurepip/rewheel/__init__.py

new file mode 100644

index 0000000..75c2094

--- /dev/null

+++ b/Lib/ensurepip/rewheel/__init__.py

@@ -0,0 +1,158 @@

+import argparse

+import codecs

+import csv

+import email.parser

+import os

+import io

+import re

+import site

+import subprocess

+import sys

+import zipfile

+

+def run():

+    parser = argparse.ArgumentParser(description='Recreate wheel of package with given RECORD.')

+    parser.add_argument('record_path',

+                        help='Path to RECORD file')

+    parser.add_argument('-o', '--output-dir',

+                        help='Dir where to place the wheel, defaults to current working dir.',

+                        dest='outdir',

+                        default=os.path.curdir)

+

+    ns = parser.parse_args()

+    retcode = 0

+    try:

+        print(rewheel_from_record(**vars(ns)))

+    except BaseException as e:

+        print('Failed: {}'.format(e))

+        retcode = 1

+    sys.exit(1)

+

+def find_system_records(projects):

+    """Return list of paths to RECORD files for system-installed projects.

+

+    If a project is not installed, the resulting list contains None instead

+    of a path to its RECORD

+    """

+    records = []

+    # get system site-packages dirs

+    if hasattr(sys, 'real_prefix'):

+        #we are in python2 virtualenv and sys.real_prefix is the original sys.prefix

+        _orig_prefixes = site.PREFIXES

+        setattr(site, 'PREFIXES', [sys.real_prefix]*2)

+        sys_sitepack = site.getsitepackages()

+        setattr(site, 'PREFIXES', _orig_prefixes)

+    elif hasattr(sys, 'base_prefix'): # python3 venv doesn't inject real_prefix to sys

+        # we are on python3 and base(_exec)_prefix is unchanged in venv

+        sys_sitepack = site.getsitepackages([sys.base_prefix, sys.base_exec_prefix])

+    else:

+        # we are in python2 without virtualenv

+        sys_sitepack = site.getsitepackages()

+

+    sys_sitepack = [sp for sp in sys_sitepack if os.path.exists(sp)]

+    # try to find all projects in all system site-packages

+    for project in projects:

+        path = None

+        for sp in sys_sitepack:

+            dist_info_re = os.path.join(sp, project) + '-[^\{0}]+\.dist-info'.format(os.sep)

+            candidates = [os.path.join(sp, p) for p in os.listdir(sp)]

+            # filter out candidate dirs based on the above regexp

+            filtered = [c for c in candidates if re.match(dist_info_re, c)]

+            # if we have 0 or 2 or more dirs, something is wrong...

+            if len(filtered) == 1:

+                path = filtered[0]

+        if path is not None:

+            records.append(os.path.join(path, 'RECORD'))

+        else:

+            records.append(None)

+    return records

+

+def rewheel_from_record(record_path, outdir):

+    """Recreates a whee of package with given record_path and returns path

+    to the newly created wheel."""

+    site_dir = os.path.dirname(os.path.dirname(record_path))

+    record_relpath = record_path[len(site_dir):].strip(os.path.sep)

+    to_write, to_omit = get_records_to_pack(site_dir, record_relpath)

+    new_wheel_name = get_wheel_name(record_path)

+    new_wheel_path = os.path.join(outdir, new_wheel_name + '.whl')

+

+    new_wheel = zipfile.ZipFile(new_wheel_path, mode='w', compression=zipfile.ZIP_DEFLATED)

+    # we need to write a new record with just the files that we will write,

+    # e.g. not binaries and *.pyc/*.pyo files

+    if sys.version_info[0] < 3:

+        new_record = io.BytesIO()

+    else:

+        new_record = io.StringIO()

+    writer = csv.writer(new_record)

+

+    # handle files that we can write straight away

+    for f, sha_hash, size in to_write:

+        new_wheel.write(os.path.join(site_dir, f), arcname=f)

+        writer.writerow([f, sha_hash,size])

+

+    # rewrite the old wheel file with a new computed one

+    writer.writerow([record_relpath, '', ''])

+    new_wheel.writestr(record_relpath, new_record.getvalue())

+

+    new_wheel.close()

+

+    return new_wheel.filename

+

+def get_wheel_name(record_path):

+    """Return proper name of the wheel, without .whl."""

+

+    wheel_info_path = os.path.join(os.path.dirname(record_path), 'WHEEL')

+    with codecs.open(wheel_info_path, encoding='utf-8') as wheel_info_file:

+        wheel_info = email.parser.Parser().parsestr(wheel_info_file.read().encode('utf-8'))

+

+    metadata_path = os.path.join(os.path.dirname(record_path), 'METADATA')

+    with codecs.open(metadata_path, encoding='utf-8') as metadata_file:

+        metadata = email.parser.Parser().parsestr(metadata_file.read().encode('utf-8'))

+

+    # construct name parts according to wheel spec

+    distribution = metadata.get('Name')

+    version = metadata.get('Version')

+    build_tag = '' # nothing for now

+    lang_tag = []

+    for t in wheel_info.get_all('Tag'):

+        lang_tag.append(t.split('-')[0])

+    lang_tag = '.'.join(lang_tag)

+    abi_tag, plat_tag = wheel_info.get('Tag').split('-')[1:3]

+    # leave out build tag, if it is empty

+    to_join = filter(None, [distribution, version, build_tag, lang_tag, abi_tag, plat_tag])

+    return '-'.join(list(to_join))

+

+def get_records_to_pack(site_dir, record_relpath):

+    """Accepts path of sitedir and path of RECORD file relative to it.

+    Returns two lists:

+    - list of files that can be written to new RECORD straight away

+    - list of files that shouldn't be written or need some processing

+      (pyc and pyo files, scripts)

+    """

+    record_file_path = os.path.join(site_dir, record_relpath)

+    with codecs.open(record_file_path, encoding='utf-8') as record_file:

+        record_contents = record_file.read()

+    # temporary fix for https://github.com/pypa/pip/issues/1376

+    # we need to ignore files under ".data" directory

+    data_dir = os.path.dirname(record_relpath).strip(os.path.sep)

+    data_dir = data_dir[:-len('dist-info')] + 'data'

+

+    to_write = []

+    to_omit = []

+    for l in record_contents.splitlines():

+        spl = l.split(',')

+        if len(spl) == 3:

+            # new record will omit (or write differently):

+            # - abs paths, paths with ".." (entry points),

+            # - pyc+pyo files

+            # - the old RECORD file

+            # TODO: is there any better way to recognize an entry point?

+            if os.path.isabs(spl[0]) or spl[0].startswith('..') or \

+               spl[0].endswith('.pyc') or spl[0].endswith('.pyo') or \

+               spl[0] == record_relpath or spl[0].startswith(data_dir):

+                to_omit.append(spl)

+            else:

+                to_write.append(spl)

+        else:

+            pass # bad RECORD or empty line

+    return to_write, to_omit

diff --git a/Makefile.pre.in b/Makefile.pre.in

index 877698c..2c43611 100644

--- a/Makefile.pre.in

+++ b/Makefile.pre.in

@@ -1065,7 +1065,7 @@ LIBSUBDIRS=	lib-tk lib-tk/test lib-tk/test/test_tkinter \

 		test/tracedmodules \

 		encodings compiler hotshot \

 		email email/mime email/test email/test/data \

-		ensurepip ensurepip/_bundled \

+		ensurepip ensurepip/_bundled ensurepip/rewheel\

 		json json/tests \

 		sqlite3 sqlite3/test \

 		logging bsddb bsddb/test csv importlib wsgiref \