From 79c07efba28a5fe38561b2decb5021ba21590d29 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Tue, 18 Jan 2011 14:17:31 -0800
Subject: [PATCH] Fix some poor installed/masked || choices.

This will fix bug #351828. It's fallout from bug #350285.
---
 pym/_emerge/depgraph.py                   | 19 +++++++------------
 pym/portage/tests/resolver/test_simple.py | 16 +++++++++++++---
 2 files changed, 20 insertions(+), 15 deletions(-)

diff --git a/pym/_emerge/depgraph.py b/pym/_emerge/depgraph.py
index ba06fbc0f..1a203545f 100644
--- a/pym/_emerge/depgraph.py
+++ b/pym/_emerge/depgraph.py
@@ -1,4 +1,4 @@
-# Copyright 1999-2010 Gentoo Foundation
+# Copyright 1999-2011 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 from __future__ import print_function
@@ -2914,14 +2914,16 @@ class depgraph(object):
 							continue
 					reinstall_for_flags = None
 
-					if not pkg.installed or \
-						(matched_packages and not avoid_update):
+					if not pkg.installed or matched_packages:
 						# Only enforce visibility on installed packages
 						# if there is at least one other visible package
 						# available. By filtering installed masked packages
 						# here, packages that have been masked since they
 						# were installed can be automatically downgraded
-						# to an unmasked version.
+						# to an unmasked version. NOTE: This code needs to
+						# be consistent with masking behavior inside
+						# _dep_check_composite_db, in order to prevent
+						# incorrect choices in || deps like bug #351828.
 
 						if not self._pkg_visibility_check(pkg, \
 							allow_unstable_keywords=allow_unstable_keywords,
@@ -2933,15 +2935,8 @@ class depgraph(object):
 						# version is masked by KEYWORDS, but never
 						# reinstall the same exact version only due
 						# to a KEYWORDS mask. See bug #252167.
-						if matched_packages:
 
-							different_version = None
-							for avail_pkg in matched_packages:
-								if not portage.dep.cpvequal(
-									pkg.cpv, avail_pkg.cpv):
-									different_version = avail_pkg
-									break
-							if different_version is not None:
+						if matched_packages:
 								# If the ebuild no longer exists or it's
 								# keywords have been dropped, reject built
 								# instances (installed or binary).
diff --git a/pym/portage/tests/resolver/test_simple.py b/pym/portage/tests/resolver/test_simple.py
index 4e69d6564..c3ca9f4d5 100644
--- a/pym/portage/tests/resolver/test_simple.py
+++ b/pym/portage/tests/resolver/test_simple.py
@@ -1,4 +1,4 @@
-# Copyright 2010 Gentoo Foundation
+# Copyright 2010-2011 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 from portage.tests import TestCase
@@ -8,7 +8,7 @@ class SimpleResolverTestCase(TestCase):
 
 	def testSimple(self):
 		ebuilds = {
-			"dev-libs/A-1": {}, 
+			"dev-libs/A-1": { "KEYWORDS": "x86" }, 
 			"dev-libs/A-2": { "KEYWORDS": "~x86" },
 			"dev-libs/B-1.2": {},
 
@@ -18,17 +18,27 @@ class SimpleResolverTestCase(TestCase):
 			"app-misc/W-1": {},
 			}
 		installed = {
+			"dev-libs/A-1": {},
 			"dev-libs/B-1.1": {},
 			}
 
 		test_cases = (
 			ResolverPlaygroundTestCase(["dev-libs/A"], success = True, mergelist = ["dev-libs/A-1"]),
 			ResolverPlaygroundTestCase(["=dev-libs/A-2"], success = False),
+
 			ResolverPlaygroundTestCase(
-				["dev-libs/B"],
+				["dev-libs/A"],
 				options = {"--noreplace": True},
 				success = True,
 				mergelist = []),
+
+			# This triggers a replacement since the dev-libs/B-1.1 ebuild
+			# is not available in the portage tree (see bug #351828).
+			ResolverPlaygroundTestCase(
+				["dev-libs/B"],
+				options = {"--noreplace": True},
+				success = True,
+				mergelist = ["dev-libs/B-1.2"]),
 			ResolverPlaygroundTestCase(
 				["dev-libs/B"],
 				options = {"--update": True},
-- 
2.26.2