--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/planemo/lib/python3.7/site-packages/virtualenv/seed/embed/pip_invoke.py	Fri Jul 31 00:32:28 2020 -0400
@@ -0,0 +1,56 @@
+from __future__ import absolute_import, unicode_literals
+
+import logging
+from contextlib import contextmanager
+
+from virtualenv.discovery.cached_py_info import LogCmd
+from virtualenv.seed.embed.base_embed import BaseEmbed
+from virtualenv.util.subprocess import Popen
+
+from ..wheels import Version, get_wheel, pip_wheel_env_run
+
+
+class PipInvoke(BaseEmbed):
+    def __init__(self, options):
+        super(PipInvoke, self).__init__(options)
+
+    def run(self, creator):
+        if not self.enabled:
+            return
+        for_py_version = creator.interpreter.version_release_str
+        with self.get_pip_install_cmd(creator.exe, for_py_version) as cmd:
+            env = pip_wheel_env_run(self.extra_search_dir, self.app_data)
+            self._execute(cmd, env)
+
+    @staticmethod
+    def _execute(cmd, env):
+        logging.debug("pip seed by running: %s", LogCmd(cmd, env))
+        process = Popen(cmd, env=env)
+        process.communicate()
+        if process.returncode != 0:
+            raise RuntimeError("failed seed with code {}".format(process.returncode))
+        return process
+
+    @contextmanager
+    def get_pip_install_cmd(self, exe, for_py_version):
+        cmd = [str(exe), "-m", "pip", "-q", "install", "--only-binary", ":all:", "--disable-pip-version-check"]
+        if not self.download:
+            cmd.append("--no-index")
+        folders = set()
+        for dist, version in self.distribution_to_versions().items():
+            wheel = get_wheel(
+                distribution=dist,
+                version=version,
+                for_py_version=for_py_version,
+                search_dirs=self.extra_search_dir,
+                download=False,
+                app_data=self.app_data,
+                do_periodic_update=self.periodic_update,
+            )
+            if wheel is None:
+                raise RuntimeError("could not get wheel for distribution {}".format(dist))
+            folders.add(str(wheel.path.parent))
+            cmd.append(Version.as_pip_req(dist, wheel.version))
+        for folder in sorted(folders):
+            cmd.extend(["--find-links", str(folder)])
+        yield cmd