From 18a617e9e0f64b727938422d4f941dfddfbf5d00 Mon Sep 17 00:00:00 2001
From: Tomas Orsava <torsava@redhat.com>
Date: Tue, 14 Feb 2017 17:10:09 +0100
Subject: [PATCH] Emit a warning when running with root privileges.

---
 pip/commands/install.py | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/pip/commands/install.py b/pip/commands/install.py
index 227c526..277a3d1 100644
--- a/pip/commands/install.py
+++ b/pip/commands/install.py
@@ -6,6 +6,8 @@ import os
 import tempfile
 import shutil
 import warnings
+import sys
+from os import path
 try:
     import wheel
 except ImportError:
@@ -193,6 +195,18 @@ class InstallCommand(RequirementCommand):
         cmdoptions.resolve_wheel_no_use_binary(options)
         cmdoptions.check_install_build_global(options)
 
+        def is_venv():
+            return hasattr(sys, 'real_prefix') or \
+                    (hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix)
+
+        # Check whether we have root privileges and aren't in venv/virtualenv
+        if os.getuid() == 0 and not is_venv():
+            logger.warning(
+                "WARNING: Running pip install with root privileges is "
+                "generally not a good idea. Try `%s install --user` instead."
+                        % path.basename(sys.argv[0])
+            )
+
         if options.as_egg:
             warnings.warn(
                 "--egg has been deprecated and will be removed in the future. "
-- 
2.11.0