python-pip/remove-existing-dist-only-if-path-conflicts.patch
Miro Hrončok 192c4aebdf Fix broken uninstallation by a bogus downstream patch
In pip 21.2, the Distribution here is a wrapper around the regular Distribution.
It has a limited set of API defined by the BaseDistribution protocol.
dist_location() uses the project_name attribute under the hood --
and that is not part of the API.

If we ever upstream this, we should make this check a property of BaseDistribution.
But, for now, we hotfix it by accessing the private wrapped Distribution object directly.
Yes, this is ugly.
2021-08-16 12:27:18 +02:00

141 lines
5.7 KiB
Diff

From aca0c9df4ef54f70a3fedb07f4faac463f88a331 Mon Sep 17 00:00:00 2001
From: Karolina Surma <ksurma@redhat.com>
Date: Mon, 10 May 2021 18:16:20 +0200
Subject: [PATCH] Prevent removing of the system packages installed under
/usr/lib
when pip install -U is executed.
Resolves: rhbz#1550368
Co-Authored-By: Michal Cyprian <m.cyprian@gmail.com>
Co-Authored-By: Victor Stinner <vstinner@redhat.com>
Co-Authored-By: Petr Viktorin <pviktori@redhat.com>
Co-Authored-By: Lumir Balhar <lbalhar@redhat.com>
Co-Authored-By: Miro Hrončok <miro@hroncok.cz>
---
src/pip/_internal/req/req_install.py | 3 ++-
src/pip/_internal/resolution/legacy/resolver.py | 5 ++++-
src/pip/_internal/resolution/resolvelib/factory.py | 10 ++++++++++
src/pip/_internal/utils/misc.py | 11 +++++++++++
4 files changed, 27 insertions(+), 2 deletions(-)
diff --git a/src/pip/_internal/req/req_install.py b/src/pip/_internal/req/req_install.py
index 4c58cdb..3570e17 100644
--- a/src/pip/_internal/req/req_install.py
+++ b/src/pip/_internal/req/req_install.py
@@ -43,6 +43,7 @@ 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,
@@ -426,7 +427,7 @@ class InstallRequirement:
"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 4df8f7e..dda2292 100644
--- a/src/pip/_internal/resolution/legacy/resolver.py
+++ b/src/pip/_internal/resolution/legacy/resolver.py
@@ -42,6 +42,7 @@ from pip._internal.resolution.base import BaseResolver, InstallRequirementProvid
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
logger = logging.getLogger(__name__)
@@ -194,7 +195,9 @@ 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/resolution/resolvelib/factory.py b/src/pip/_internal/resolution/resolvelib/factory.py
index e7fd344..555e657 100644
--- a/src/pip/_internal/resolution/resolvelib/factory.py
+++ b/src/pip/_internal/resolution/resolvelib/factory.py
@@ -1,6 +1,7 @@
import contextlib
import functools
import logging
+import sys
from typing import (
TYPE_CHECKING,
Dict,
@@ -34,6 +35,7 @@ from pip._internal.exceptions import (
UnsupportedWheel,
)
from pip._internal.index.package_finder import PackageFinder
+from pip._internal.locations import get_scheme
from pip._internal.metadata import BaseDistribution, get_default_environment
from pip._internal.models.link import Link
from pip._internal.models.wheel import Wheel
@@ -46,6 +48,7 @@ from pip._internal.req.req_install import (
from pip._internal.resolution.base import InstallRequirementProvider
from pip._internal.utils.compatibility_tags import get_supported
from pip._internal.utils.hashes import Hashes
+from pip._internal.utils.misc import dist_location
from pip._internal.utils.virtualenv import running_under_virtualenv
from .base import Candidate, CandidateVersion, Constraint, Requirement
@@ -525,6 +528,13 @@ class Factory:
if dist is None: # Not installed, no uninstallation required.
return None
+ # Prevent uninstalling packages from /usr
+ if dist_location(dist._dist) in (
+ get_scheme('', prefix=sys.base_prefix).purelib,
+ get_scheme('', prefix=sys.base_prefix).platlib,
+ ):
+ return None
+
# We're installing into global site. The current installation must
# be uninstalled, no matter it's in global or user site, because the
# user site installation has precedence over global.
diff --git a/src/pip/_internal/utils/misc.py b/src/pip/_internal/utils/misc.py
index 99ebea3..5901687 100644
--- a/src/pip/_internal/utils/misc.py
+++ b/src/pip/_internal/utils/misc.py
@@ -40,6 +40,7 @@ from pip._vendor.tenacity import retry, stop_after_delay, wait_fixed
from pip import __version__
from pip._internal.exceptions import CommandError
from pip._internal.locations import get_major_minor_version, site_packages, user_site
+from pip._internal.locations import get_scheme
from pip._internal.utils.compat import WINDOWS, stdlib_pkgs
from pip._internal.utils.virtualenv import (
running_under_virtualenv,
@@ -382,6 +383,16 @@ 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(
+ get_scheme("").purelib.split('python')[0]))
+
+
def dist_is_editable(dist):
# type: (Distribution) -> bool
"""
--
2.32.0