From 9e813764e3056fe9a376af70d9bc80749980fe5e Mon Sep 17 00:00:00 2001
From: Sebastian Luther <SebastianLuther@gmx.de>
Date: Wed, 27 Apr 2011 13:36:15 -0700
Subject: --autounmask: Don't change masked/forced flags

This will fix bug #364701.
---
 pym/_emerge/depgraph.py                          |  4 +++
 pym/portage/tests/resolver/ResolverPlayground.py |  2 +-
 pym/portage/tests/resolver/test_autounmask.py    | 31 +++++++++++++++++++++++-
 3 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/pym/_emerge/depgraph.py b/pym/_emerge/depgraph.py
index 391c845de..a0a4622ee 100644
--- a/pym/_emerge/depgraph.py
+++ b/pym/_emerge/depgraph.py
@@ -3120,6 +3120,10 @@ class depgraph(object):
 				not check_required_use(required_use, new_use, pkg.iuse.is_valid_flag):
 				return old_use
 
+			if pkg.use.mask.intersection(new_changes) or \
+				pkg.use.force.intersection(new_changes):
+				return old_use
+
 			self._dynamic_config._needed_use_config_changes[pkg] = (new_use, new_changes)
 			backtrack_infos = self._dynamic_config._backtrack_infos
 			backtrack_infos.setdefault("config", {})
diff --git a/pym/portage/tests/resolver/ResolverPlayground.py b/pym/portage/tests/resolver/ResolverPlayground.py
index eb591bba5..276b193b8 100644
--- a/pym/portage/tests/resolver/ResolverPlayground.py
+++ b/pym/portage/tests/resolver/ResolverPlayground.py
@@ -32,7 +32,7 @@ class ResolverPlayground(object):
 	"""
 
 	config_files = frozenset(("package.use", "package.mask", "package.keywords", \
-		"package.unmask", "package.properties", "package.license"))
+		"package.unmask", "package.properties", "package.license", "use.mask", "use.force"))
 
 	def __init__(self, ebuilds={}, installed={}, profile={}, repo_configs={}, \
 		user_config={}, sets={}, world=[], debug=False):
diff --git a/pym/portage/tests/resolver/test_autounmask.py b/pym/portage/tests/resolver/test_autounmask.py
index 9e50be7ed..bd3a5f99e 100644
--- a/pym/portage/tests/resolver/test_autounmask.py
+++ b/pym/portage/tests/resolver/test_autounmask.py
@@ -16,6 +16,12 @@ class AutounmaskTestCase(TestCase):
 			"dev-libs/C-1": {},
 			"dev-libs/D-1": {},
 
+			#ebuilds to test if we allow changing of masked or forced flags
+			"dev-libs/E-1": { "SLOT": 1, "DEPEND": "dev-libs/F[masked-flag]", "EAPI": 2},
+			"dev-libs/E-2": { "SLOT": 2, "DEPEND": "dev-libs/G[-forced-flag]", "EAPI": 2},
+			"dev-libs/F-1": { "IUSE": "masked-flag"},
+			"dev-libs/G-1": { "IUSE": "forced-flag"},
+
 			#ebuilds to test keyword changes
 			"app-misc/Z-1": { "KEYWORDS": "~x86", "DEPEND": "app-misc/Y" },
 			"app-misc/Y-1": { "KEYWORDS": "~x86" },
@@ -185,9 +191,32 @@ class AutounmaskTestCase(TestCase):
 					options = { "--autounmask": True },
 					use_changes = None,
 					success = False),
+
+				#Make sure we don't change masked/forced flags.
+				ResolverPlaygroundTestCase(
+					["dev-libs/E:1"],
+					options = {"--autounmask": True},
+					use_changes = None,
+					success = False),
+				ResolverPlaygroundTestCase(
+					["dev-libs/E:2"],
+					options = {"--autounmask": True},
+					use_changes = None,
+					success = False),
 			)
 
-		playground = ResolverPlayground(ebuilds=ebuilds)
+		profile = {
+			"use.mask":
+				(
+					"masked-flag",
+				),
+			"use.force":
+				(
+					"forced-flag",
+				),
+		}
+
+		playground = ResolverPlayground(ebuilds=ebuilds, profile=profile)
 		try:
 			for test_case in test_cases:
 				playground.run_TestCase(test_case)
-- 
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