--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/planemo/lib/python3.7/site-packages/virtualenv/create/describe.py	Fri Jul 31 00:32:28 2020 -0400
@@ -0,0 +1,117 @@
+from __future__ import absolute_import, print_function, unicode_literals
+
+from abc import ABCMeta
+from collections import OrderedDict
+
+from six import add_metaclass
+
+from virtualenv.info import IS_WIN
+from virtualenv.util.path import Path
+from virtualenv.util.six import ensure_text
+
+
+@add_metaclass(ABCMeta)
+class Describe(object):
+    """Given a host interpreter tell us information about what the created interpreter might look like"""
+
+    suffix = ".exe" if IS_WIN else ""
+
+    def __init__(self, dest, interpreter):
+        self.interpreter = interpreter
+        self.dest = dest
+        self._stdlib = None
+        self._stdlib_platform = None
+        self._system_stdlib = None
+        self._conf_vars = None
+
+    @property
+    def bin_dir(self):
+        return self.script_dir
+
+    @property
+    def script_dir(self):
+        return self.dest / Path(self.interpreter.distutils_install["scripts"])
+
+    @property
+    def purelib(self):
+        return self.dest / self.interpreter.distutils_install["purelib"]
+
+    @property
+    def platlib(self):
+        return self.dest / self.interpreter.distutils_install["platlib"]
+
+    @property
+    def libs(self):
+        return list(OrderedDict(((self.platlib, None), (self.purelib, None))).keys())
+
+    @property
+    def stdlib(self):
+        if self._stdlib is None:
+            self._stdlib = Path(self.interpreter.sysconfig_path("stdlib", config_var=self._config_vars))
+        return self._stdlib
+
+    @property
+    def stdlib_platform(self):
+        if self._stdlib_platform is None:
+            self._stdlib_platform = Path(self.interpreter.sysconfig_path("platstdlib", config_var=self._config_vars))
+        return self._stdlib_platform
+
+    @property
+    def _config_vars(self):
+        if self._conf_vars is None:
+            self._conf_vars = self._calc_config_vars(ensure_text(str(self.dest)))
+        return self._conf_vars
+
+    def _calc_config_vars(self, to):
+        return {
+            k: (to if v.startswith(self.interpreter.prefix) else v) for k, v in self.interpreter.sysconfig_vars.items()
+        }
+
+    @classmethod
+    def can_describe(cls, interpreter):
+        """Knows means it knows how the output will look"""
+        return True
+
+    @property
+    def env_name(self):
+        return ensure_text(self.dest.parts[-1])
+
+    @property
+    def exe(self):
+        return self.bin_dir / "{}{}".format(self.exe_stem(), self.suffix)
+
+    @classmethod
+    def exe_stem(cls):
+        """executable name without suffix - there seems to be no standard way to get this without creating it"""
+        raise NotImplementedError
+
+    def script(self, name):
+        return self.script_dir / "{}{}".format(name, self.suffix)
+
+
+@add_metaclass(ABCMeta)
+class Python2Supports(Describe):
+    @classmethod
+    def can_describe(cls, interpreter):
+        return interpreter.version_info.major == 2 and super(Python2Supports, cls).can_describe(interpreter)
+
+
+@add_metaclass(ABCMeta)
+class Python3Supports(Describe):
+    @classmethod
+    def can_describe(cls, interpreter):
+        return interpreter.version_info.major == 3 and super(Python3Supports, cls).can_describe(interpreter)
+
+
+@add_metaclass(ABCMeta)
+class PosixSupports(Describe):
+    @classmethod
+    def can_describe(cls, interpreter):
+        return interpreter.os == "posix" and super(PosixSupports, cls).can_describe(interpreter)
+
+
+@add_metaclass(ABCMeta)
+class WindowsSupports(Describe):
+    @classmethod
+    def can_describe(cls, interpreter):
+        return interpreter.os == "nt" and super(WindowsSupports, cls).can_describe(interpreter)