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From 854fd7296bb9306d46ba3cc8bb7c6f18a7960ed6 Mon Sep 17 00:00:00 2001
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From: Tomas Hrnciar <thrnciar@redhat.com>
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Date: Sun, 26 Apr 2020 21:19:03 +0200
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Subject: [PATCH] Prevent removing of the system packages installed under
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/usr/lib
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when pip install -U is executed.
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Resolves: rhbz#1550368
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Co-Authored-By: Michal Cyprian <m.cyprian@gmail.com>
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Co-Authored-By: Victor Stinner <vstinner@redhat.com>
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---
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src/pip/_internal/req/req_install.py | 3 ++-
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src/pip/_internal/resolution/legacy/resolver.py | 5 ++++-
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src/pip/_internal/utils/misc.py | 11 +++++++++++
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3 files changed, 17 insertions(+), 2 deletions(-)
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diff --git a/src/pip/_internal/req/req_install.py b/src/pip/_internal/req/req_install.py
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index 4759f4a..2e76e35 100644
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--- a/src/pip/_internal/req/req_install.py
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+++ b/src/pip/_internal/req/req_install.py
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@@ -39,6 +39,7 @@ from pip._internal.utils.misc import (
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ask_path_exists,
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backup_dir,
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display_path,
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+ dist_in_install_path,
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dist_in_site_packages,
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dist_in_usersite,
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get_distribution,
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@@ -446,7 +447,7 @@ class InstallRequirement(object):
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"lack sys.path precedence to {} in {}".format(
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existing_dist.project_name, existing_dist.location)
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)
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- else:
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+ elif dist_in_install_path(existing_dist):
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self.should_reinstall = True
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else:
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if self.editable:
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diff --git a/src/pip/_internal/resolution/legacy/resolver.py b/src/pip/_internal/resolution/legacy/resolver.py
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index c9b4c66..ff361d8 100644
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--- a/src/pip/_internal/resolution/legacy/resolver.py
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+++ b/src/pip/_internal/resolution/legacy/resolver.py
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@@ -34,6 +34,7 @@ from pip._internal.resolution.base import BaseResolver
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from pip._internal.utils.compatibility_tags import get_supported
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from pip._internal.utils.logging import indent_log
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from pip._internal.utils.misc import dist_in_usersite, normalize_version_info
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+from pip._internal.utils.misc import dist_in_install_path
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from pip._internal.utils.packaging import (
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check_requires_python,
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get_requires_python,
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@@ -207,7 +208,9 @@ class Resolver(BaseResolver):
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"""
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# Don't uninstall the conflict if doing a user install and the
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# conflict is not a user install.
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- if not self.use_user_site or dist_in_usersite(req.satisfied_by):
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+ if ((not self.use_user_site
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+ or dist_in_usersite(req.satisfied_by))
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+ and dist_in_install_path(req.satisfied_by)):
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req.should_reinstall = True
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req.satisfied_by = None
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diff --git a/src/pip/_internal/utils/misc.py b/src/pip/_internal/utils/misc.py
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index 24a7455..5fd48d3 100644
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--- a/src/pip/_internal/utils/misc.py
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+++ b/src/pip/_internal/utils/misc.py
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@@ -31,6 +31,7 @@ from pip._vendor.six.moves.urllib.parse import unquote as urllib_unquote
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from pip import __version__
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from pip._internal.exceptions import CommandError
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from pip._internal.locations import (
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+ distutils_scheme,
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get_major_minor_version,
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site_packages,
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user_site,
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@@ -403,6 +404,16 @@ def dist_in_site_packages(dist):
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return dist_location(dist).startswith(normalize_path(site_packages))
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+def dist_in_install_path(dist):
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+ """
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+ Return True if given Distribution is installed in
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+ path matching distutils_scheme layout.
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+ """
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+ norm_path = normalize_path(dist_location(dist))
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+ return norm_path.startswith(normalize_path(
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+ distutils_scheme("")['purelib'].split('python')[0]))
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+
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+
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def dist_is_editable(dist):
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# type: (Distribution) -> bool
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"""
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--
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2.25.4
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