--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/env/lib/python3.7/site-packages/virtualenv/config/cli/parser.py	Thu May 14 14:56:58 2020 -0400
@@ -0,0 +1,80 @@
+from __future__ import absolute_import, unicode_literals
+
+from argparse import SUPPRESS, ArgumentDefaultsHelpFormatter, ArgumentParser
+from collections import OrderedDict
+
+from virtualenv.config.convert import get_type
+
+from ..env_var import get_env_var
+from ..ini import IniConfig
+
+
+class VirtualEnvConfigParser(ArgumentParser):
+    """
+    Custom option parser which updates its defaults by checking the configuration files and environmental variables
+    """
+
+    def __init__(self, options=None, *args, **kwargs):
+        self.file_config = IniConfig()
+        self.epilog_list = []
+        kwargs["epilog"] = self.file_config.epilog
+        kwargs["add_help"] = False
+        kwargs["formatter_class"] = HelpFormatter
+        kwargs["prog"] = "virtualenv"
+        super(VirtualEnvConfigParser, self).__init__(*args, **kwargs)
+        self._fixed = set()
+        self._elements = None
+        self._verbosity = None
+        self._options = options
+        self._interpreter = None
+        self._app_data = None
+
+    def _fix_defaults(self):
+        for action in self._actions:
+            action_id = id(action)
+            if action_id not in self._fixed:
+                self._fix_default(action)
+                self._fixed.add(action_id)
+
+    def _fix_default(self, action):
+        if hasattr(action, "default") and hasattr(action, "dest") and action.default != SUPPRESS:
+            as_type = get_type(action)
+            names = OrderedDict((i.lstrip("-").replace("-", "_"), None) for i in action.option_strings)
+            outcome = None
+            for name in names:
+                outcome = get_env_var(name, as_type)
+                if outcome is not None:
+                    break
+            if outcome is None and self.file_config:
+                for name in names:
+                    outcome = self.file_config.get(name, as_type)
+                    if outcome is not None:
+                        break
+            if outcome is not None:
+                action.default, action.default_source = outcome
+
+    def enable_help(self):
+        self._fix_defaults()
+        self.add_argument("-h", "--help", action="help", default=SUPPRESS, help="show this help message and exit")
+
+    def parse_known_args(self, args=None, namespace=None):
+        self._fix_defaults()
+        return super(VirtualEnvConfigParser, self).parse_known_args(args, namespace=namespace)
+
+    def parse_args(self, args=None, namespace=None):
+        self._fix_defaults()
+        return super(VirtualEnvConfigParser, self).parse_args(args, namespace=namespace)
+
+
+class HelpFormatter(ArgumentDefaultsHelpFormatter):
+    def __init__(self, prog):
+        super(HelpFormatter, self).__init__(prog, max_help_position=32, width=240)
+
+    def _get_help_string(self, action):
+        # noinspection PyProtectedMember
+        text = super(HelpFormatter, self)._get_help_string(action)
+        if hasattr(action, "default_source"):
+            default = " (default: %(default)s)"
+            if text.endswith(default):
+                text = "{} (default: %(default)s -> from %(default_source)s)".format(text[: -len(default)])
+        return text