1 |
Only backtrack if changes break a USE dependency. Prior |
2 |
to this fix, the included test case succeeded only with |
3 |
a --backtrack setting of 3 or more, but now it succeeds |
4 |
with a --backtrack setting of 2. |
5 |
|
6 |
X-Gentoo-bug: 632598 |
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X-Gentoo-bug-url: https://bugs.gentoo.org/632598 |
8 |
--- |
9 |
pym/_emerge/depgraph.py | 13 +++- |
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.../resolver/test_autounmask_use_backtrack.py | 86 ++++++++++++++++++++++ |
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2 files changed, 95 insertions(+), 4 deletions(-) |
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create mode 100644 pym/portage/tests/resolver/test_autounmask_use_backtrack.py |
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|
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diff --git a/pym/_emerge/depgraph.py b/pym/_emerge/depgraph.py |
15 |
index b0149c4dc..0b9b98dbb 100644 |
16 |
--- a/pym/_emerge/depgraph.py |
17 |
+++ b/pym/_emerge/depgraph.py |
18 |
@@ -5972,11 +5972,16 @@ class depgraph(object): |
19 |
|
20 |
new_use, changes = self._dynamic_config._needed_use_config_changes.get(pkg) |
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for ppkg, atom in parent_atoms: |
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- if not atom.use or \ |
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- not any(x in atom.use.required for x in changes): |
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+ if not atom.use: |
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continue |
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- else: |
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- return True |
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+ |
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+ # Backtrack only if changes break a USE dependency. |
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+ enabled = atom.use.enabled |
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+ disabled = atom.use.disabled |
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+ for k, v in changes.items(): |
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+ want_enabled = k in enabled |
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+ if (want_enabled or k in disabled) and want_enabled != v: |
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+ return True |
36 |
|
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return False |
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|
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diff --git a/pym/portage/tests/resolver/test_autounmask_use_backtrack.py b/pym/portage/tests/resolver/test_autounmask_use_backtrack.py |
40 |
new file mode 100644 |
41 |
index 000000000..83edeafa4 |
42 |
--- /dev/null |
43 |
+++ b/pym/portage/tests/resolver/test_autounmask_use_backtrack.py |
44 |
@@ -0,0 +1,86 @@ |
45 |
+# Copyright 2017 Gentoo Foundation |
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+# Distributed under the terms of the GNU General Public License v2 |
47 |
+ |
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+from portage.tests import TestCase |
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+from portage.tests.resolver.ResolverPlayground import ( |
50 |
+ ResolverPlayground, |
51 |
+ ResolverPlaygroundTestCase, |
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+) |
53 |
+ |
54 |
+class AutounmaskUseBacktrackTestCase(TestCase): |
55 |
+ |
56 |
+ def testAutounmaskUseBacktrack(self): |
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+ ebuilds = { |
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+ 'dev-libs/A-1': { |
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+ 'EAPI': '6', |
60 |
+ 'RDEPEND': 'dev-libs/C', |
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+ }, |
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+ 'dev-libs/A-2': { |
63 |
+ 'EAPI': '6', |
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+ 'RDEPEND': 'dev-libs/C[y]', |
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+ }, |
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+ 'dev-libs/A-3': { |
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+ 'EAPI': '6', |
68 |
+ 'RDEPEND': 'dev-libs/C', |
69 |
+ }, |
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+ 'dev-libs/B-1': { |
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+ 'EAPI': '6', |
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+ 'RDEPEND': '<dev-libs/A-3', |
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+ }, |
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+ 'dev-libs/C-1': { |
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+ 'EAPI': '6', |
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+ 'IUSE': 'x y z', |
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+ }, |
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+ 'dev-libs/D-1': { |
79 |
+ 'EAPI': '6', |
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+ 'RDEPEND': '>=dev-libs/A-2 dev-libs/C[x]', |
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+ }, |
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+ } |
83 |
+ |
84 |
+ installed = { |
85 |
+ 'dev-libs/A-1': { |
86 |
+ 'EAPI': '6', |
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+ 'RDEPEND': 'dev-libs/C', |
88 |
+ }, |
89 |
+ 'dev-libs/B-1': { |
90 |
+ 'EAPI': '6', |
91 |
+ 'RDEPEND': '<dev-libs/A-3', |
92 |
+ }, |
93 |
+ 'dev-libs/C-1': { |
94 |
+ 'EAPI': '6', |
95 |
+ 'IUSE': 'x y z', |
96 |
+ }, |
97 |
+ } |
98 |
+ |
99 |
+ world = ['dev-libs/B'] |
100 |
+ |
101 |
+ test_cases = ( |
102 |
+ # Test bug 632598, where autounmask USE changes triggered |
103 |
+ # unnecessary backtracking. The following case should |
104 |
+ # require a --backtrack setting no larger than 2. |
105 |
+ ResolverPlaygroundTestCase( |
106 |
+ ['dev-libs/D'], |
107 |
+ options={ |
108 |
+ '--autounmask-backtrack': 'y', |
109 |
+ '--backtrack': 2, |
110 |
+ }, |
111 |
+ success=False, |
112 |
+ ambiguous_merge_order=True, |
113 |
+ mergelist=[ |
114 |
+ ('dev-libs/C-1', 'dev-libs/A-2'), |
115 |
+ 'dev-libs/D-1', |
116 |
+ ], |
117 |
+ use_changes={'dev-libs/C-1': {'y': True, 'x': True}}, |
118 |
+ ), |
119 |
+ ) |
120 |
+ |
121 |
+ playground = ResolverPlayground( |
122 |
+ ebuilds=ebuilds, installed=installed, world=world) |
123 |
+ |
124 |
+ try: |
125 |
+ for test_case in test_cases: |
126 |
+ playground.run_TestCase(test_case) |
127 |
+ self.assertEqual(test_case.test_success, True, |
128 |
+ test_case.fail_msg) |
129 |
+ finally: |
130 |
+ playground.cleanup() |
131 |
-- |
132 |
2.13.5 |