From: Stefano Rivera <stefanor@debian.org>
Date: Sat, 7 Oct 2017 09:38:58 +0200
Subject: Disable ensurepip in Debian for now

Origin: Debian cpython packaging
Last-Update: 2015-03-26
---
 lib-python/2.7/ensurepip/__init__.py  | 17 +++++++++++++++++
 lib-python/2.7/test/test_ensurepip.py |  1 +
 2 files changed, 18 insertions(+)

diff --git a/lib-python/2.7/ensurepip/__init__.py b/lib-python/2.7/ensurepip/__init__.py
index fa2ccec..7c37509 100644
--- a/lib-python/2.7/ensurepip/__init__.py
+++ b/lib-python/2.7/ensurepip/__init__.py
@@ -13,6 +13,21 @@ import warnings
 
 __all__ = ["version", "bootstrap"]
 
+def _ensurepip_is_disabled_in_debian():
+    if True:
+        print ('''\
+ensurepip is disabled in Debian/Ubuntu for the system python.
+
+Python modules For the system python are usually handled by dpkg and apt-get.
+
+    apt-get install pypy-<module name>
+
+Install the python-pip package to use pip itself.  Using pip together
+with the system python might have unexpected results for any system installed
+module, so use it on your own risk, or make sure to only use it in virtual
+environments.
+''')
+        sys.exit(1)
 
 _PROJECTS = [
     "setuptools",
@@ -37,6 +52,7 @@ def version():
     """
     Returns a string specifying the bundled version of pip.
     """
+    _ensurepip_is_disabled_in_debian()
     whl_name = 'pip'
     wheel_names = glob.glob('/usr/share/python-wheels/%s-*.whl' % whl_name)
     if len(wheel_names) == 1:
@@ -65,6 +81,7 @@ def bootstrap(root=None, upgrade=False, user=False,
 
     Note that calling this function will alter both sys.path and os.environ.
     """
+    _ensurepip_is_disabled_in_debian()
     if altinstall and default_pip:
         raise ValueError("Cannot use altinstall and default_pip together")
 
diff --git a/lib-python/2.7/test/test_ensurepip.py b/lib-python/2.7/test/test_ensurepip.py
index 3316fcf..e5f972d 100644
--- a/lib-python/2.7/test/test_ensurepip.py
+++ b/lib-python/2.7/test/test_ensurepip.py
@@ -1,4 +1,5 @@
 import unittest
+raise unittest.SkipTest('ensurepip is disabled in debian')
 import os
 import os.path
 import contextlib
