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From d381c59fdc15949c4dc293bd92bbccb60289a703 Mon Sep 17 00:00:00 2001
From: Tomas Hrnciar <thrnciar@redhat.com>
Date: Sun, 26 Apr 2020 21:19:03 +0200
Subject: [PATCH] Prevent removing of the system packages installed under
/usr/lib
when pip install -U is executed.
Resolves: rhbz#1550368
---
src/pip/_internal/req/req_install.py | 3 ++-
src/pip/_internal/resolution/legacy/resolver.py | 5 ++++-
src/pip/_internal/utils/misc.py | 9 +++++++++
3 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/src/pip/_internal/req/req_install.py b/src/pip/_internal/req/req_install.py
index 4759f4a..2e76e35 100644
--- a/src/pip/_internal/req/req_install.py
+++ b/src/pip/_internal/req/req_install.py
@@ -39,6 +39,7 @@ from pip._internal.utils.misc import (
ask_path_exists,
backup_dir,
display_path,
+ dist_in_install_path,
dist_in_site_packages,
dist_in_usersite,
get_distribution,
@@ -446,7 +447,7 @@ class InstallRequirement(object):
"lack sys.path precedence to {} in {}".format(
existing_dist.project_name, existing_dist.location)
)
- else:
+ elif dist_in_install_path(existing_dist):
self.should_reinstall = True
else:
if self.editable:
diff --git a/src/pip/_internal/resolution/legacy/resolver.py b/src/pip/_internal/resolution/legacy/resolver.py
index c9b4c66..8b98ebd 100644
--- a/src/pip/_internal/resolution/legacy/resolver.py
+++ b/src/pip/_internal/resolution/legacy/resolver.py
@@ -34,6 +34,7 @@ from pip._internal.resolution.base import BaseResolver
from pip._internal.utils.compatibility_tags import get_supported
from pip._internal.utils.logging import indent_log
from pip._internal.utils.misc import dist_in_usersite, normalize_version_info
+from pip._internal.utils.misc import dist_in_install_path
from pip._internal.utils.packaging import (
check_requires_python,
get_requires_python,
@@ -207,7 +208,9 @@ class Resolver(BaseResolver):
"""
# Don't uninstall the conflict if doing a user install and the
# conflict is not a user install.
- if not self.use_user_site or dist_in_usersite(req.satisfied_by):
+ if ((not self.use_user_site
+ or dist_in_usersite(req.satisfied_by))
+ and dist_in_install_path(req.satisfied_by)):
req.should_reinstall = True
req.satisfied_by = None
diff --git a/src/pip/_internal/utils/misc.py b/src/pip/_internal/utils/misc.py
index 5629c60..6bd6daa 100644
--- a/src/pip/_internal/utils/misc.py
+++ b/src/pip/_internal/utils/misc.py
@@ -31,6 +31,7 @@ from pip._vendor.six.moves.urllib.parse import unquote as urllib_unquote
from pip import __version__
from pip._internal.exceptions import CommandError
from pip._internal.locations import (
+ distutils_scheme,
get_major_minor_version,
site_packages,
user_site,
@@ -402,6 +403,14 @@ def dist_in_site_packages(dist):
"""
return dist_location(dist).startswith(normalize_path(site_packages))
+def dist_in_install_path(dist):
+ """
+ Return True if given Distribution is installed in
+ path matching distutils_scheme layout.
+ """
+ norm_path = normalize_path(dist_location(dist))
+ return norm_path.startswith(normalize_path(
+ distutils_scheme("")['purelib'].split('python')[0]))
def dist_is_editable(dist):
# type: (Distribution) -> bool
--
2.23.0
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