--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/env/lib/python3.7/site-packages/virtualenv/util/zipapp.py	Thu May 14 14:56:58 2020 -0400
@@ -0,0 +1,56 @@
+from __future__ import absolute_import, unicode_literals
+
+import logging
+import os
+import zipfile
+from contextlib import contextmanager
+from tempfile import TemporaryFile
+
+from virtualenv.info import IS_WIN, IS_ZIPAPP, ROOT
+from virtualenv.util.path import Path
+from virtualenv.util.six import ensure_text
+from virtualenv.version import __version__
+
+
+def read(full_path):
+    sub_file = _get_path_within_zip(full_path)
+    with zipfile.ZipFile(ROOT, "r") as zip_file:
+        with zip_file.open(sub_file) as file_handler:
+            return file_handler.read().decode("utf-8")
+
+
+def extract(full_path, dest):
+    logging.debug("extract %s to %s", full_path, dest)
+    sub_file = _get_path_within_zip(full_path)
+    with zipfile.ZipFile(ROOT, "r") as zip_file:
+        info = zip_file.getinfo(sub_file)
+        info.filename = dest.name
+        zip_file.extract(info, ensure_text(str(dest.parent)))
+
+
+def _get_path_within_zip(full_path):
+    full_path = os.path.abspath(str(full_path))
+    sub_file = full_path[len(ROOT) + 1 :]
+    if IS_WIN:
+        # paths are always UNIX separators, even on Windows, though __file__ still follows platform default
+        sub_file = sub_file.replace(os.sep, "/")
+    return sub_file
+
+
+@contextmanager
+def ensure_file_on_disk(path, app_data):
+    if IS_ZIPAPP:
+        if app_data is None:
+            with TemporaryFile() as temp_file:
+                dest = Path(temp_file.name)
+                extract(path, dest)
+                yield Path(dest)
+        else:
+            base = app_data / "zipapp" / "extract" / __version__
+            with base.lock_for_key(path.name):
+                dest = base.path / path.name
+                if not dest.exists():
+                    extract(path, dest)
+                yield dest
+    else:
+        yield path