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8 g2boojum 1.1 <title>GLEP 19 -- Gentoo Stable Portage Tree</title>
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20 antarus 1.8 [<b><a href="http://www.gentoo.org/proj/en/glep">GLEP Index</a></b>]
21 g2boojum 1.5 [<b><a href="http://www.gentoo.org/proj/en/glep/glep-0019.txt">GLEP Source</a></b>]
22 g2boojum 1.1 </td></tr></table>
23 g2boojum 1.5 <table class="rfc2822 docutils field-list" frame="void" rules="none">
24 g2boojum 1.1 <col class="field-name" />
25     <col class="field-body" />
26     <tbody valign="top">
27     <tr class="field"><th class="field-name">GLEP:</th><td class="field-body">19</td>
28     </tr>
29     <tr class="field"><th class="field-name">Title:</th><td class="field-body">Gentoo Stable Portage Tree</td>
30     </tr>
31 g2boojum 1.5 <tr class="field"><th class="field-name">Version:</th><td class="field-body">1.8</td>
32 g2boojum 1.1 </tr>
33 g2boojum 1.5 <tr class="field"><th class="field-name">Last-Modified:</th><td class="field-body"><a class="reference" href="http://www.gentoo.org/cgi-bin/viewcvs.cgi/xml/htdocs/proj/en/glep/glep-0019.txt?cvsroot=gentoo">2006/10/10 16:54:34</a></td>
34 g2boojum 1.1 </tr>
35     <tr class="field"><th class="field-name">Author:</th><td class="field-body">Kurt Lieber &lt;klieber&#32;&#97;t&#32;gentoo.org&gt;</td>
36     </tr>
37 g2boojum 1.5 <tr class="field"><th class="field-name">Status:</th><td class="field-body">Withdrawn</td>
38 g2boojum 1.1 </tr>
39     <tr class="field"><th class="field-name">Type:</th><td class="field-body">Standards Track</td>
40     </tr>
41 g2boojum 1.5 <tr class="field"><th class="field-name">Content-Type:</th><td class="field-body"><a class="reference" href="glep-0002.html">text/x-rst</a></td>
42 g2boojum 1.1 </tr>
43     <tr class="field"><th class="field-name">Created:</th><td class="field-body">26-Jan-2004</td>
44     </tr>
45 g2boojum 1.5 <tr class="field"><th class="field-name">Post-History:</th><td class="field-body">29-Jan-2004 2-Nov-2004 7-Dec-2004 10-Oct-2006</td>
46 g2boojum 1.1 </tr>
47     </tbody>
48     </table>
49     <hr />
50 g2boojum 1.5 <div class="contents topic">
51     <p class="topic-title first"><a id="contents" name="contents">Contents</a></p>
52 g2boojum 1.1 <ul class="simple">
53 g2boojum 1.3 <li><a class="reference" href="#status" id="id3" name="id3">Status</a></li>
54 g2boojum 1.5 <li><a class="reference" href="#abstract" id="id4" name="id4">Abstract</a></li>
55     <li><a class="reference" href="#id1" id="id5" name="id5">Status</a></li>
56     <li><a class="reference" href="#motivation" id="id6" name="id6">Motivation</a></li>
57     <li><a class="reference" href="#specification" id="id7" name="id7">Specification</a></li>
58     <li><a class="reference" href="#rationale" id="id8" name="id8">Rationale</a></li>
59     <li><a class="reference" href="#implementation" id="id9" name="id9">Implementation</a></li>
60     <li><a class="reference" href="#backwards-compatibility" id="id10" name="id10">Backwards Compatibility</a></li>
61     <li><a class="reference" href="#copyright" id="id11" name="id11">Copyright</a></li>
62 g2boojum 1.1 </ul>
63     </div>
64 g2boojum 1.5 <div class="section">
65     <h1><a class="toc-backref" href="#id3" id="status" name="status">Status</a></h1>
66     <p>Withdrawn by the author. &quot;If someone wants to take up the torch, more
67     power to them, but they should probably start clean with a new glep.&quot;</p>
68     </div>
69     <div class="section">
70     <h1><a class="toc-backref" href="#id4" id="abstract" name="abstract">Abstract</a></h1>
71 g2boojum 1.1 <p>This GLEP is intended to propose a series of changes to the Portage tree that
72     are necessary to facilitate the use of Gentoo in areas where stability and
73     predictability are of paramount importance, including servers in enterprise
74     environments, mission critical workstations and other such installations.</p>
75     <p>The proposed solution involves creating a separate tree in Portage that is
76     updated far less often than the regular tree. Outside of periodic updates,
77     this tree would only be updated with critical bugfixes and security patches.</p>
78     </div>
79 g2boojum 1.5 <div class="section">
80     <h1><a class="toc-backref" href="#id5" id="id1" name="id1">Status</a></h1>
81 g2boojum 1.3 <p>Currently recruiting people who would be willing to help with this GLEP.</p>
82     </div>
83 g2boojum 1.5 <div class="section">
84     <h1><a class="toc-backref" href="#id6" id="motivation" name="motivation">Motivation</a></h1>
85 klieber 1.2 <p>Enterprise users typically value stability and a predictable upgrade path
86 g2boojum 1.1 over having the latest packages or features available to them. Historically,
87     Gentoo Linux has been unable to provide such an environment due to the dynamic
88     nature of the Portage tree.</p>
89     </div>
90 g2boojum 1.5 <div class="section">
91     <h1><a class="toc-backref" href="#id7" id="specification" name="specification">Specification</a></h1>
92 g2boojum 1.1 <p>The Gentoo Infrastructure team will need to provide an additional Portage tree
93     on our rsync mirroring system. This new tree will house the ebuilds
94     associated with the stable tree. It also impacts all Gentoo developers
95     responsible for creating and updating ebuilds as they will be expected to
96     integrate the tagging of ebuilds for the stable tree into their normal
97     development process, both for the quarterly release cycles as well as
98     off-cycle bug and security fixes.</p>
99     <p>The Gentoo Documentation team will also be affected as they will be
100     responsible for updating installation documents to take these new features
101     into account.</p>
102     </div>
103 g2boojum 1.5 <div class="section">
104     <h1><a class="toc-backref" href="#id8" id="rationale" name="rationale">Rationale</a></h1>
105 g2boojum 1.1 <p>A basic outline of various ways of adding a &quot;stable&quot; tree to Portage was
106     discussed in the gentoo managers meeting on 26-Jan-04. Consensus seemed to be
107     reached that such a solution was needed and that branching the gentoo-x86
108     repository was the appropriate way to accomplish this. The largest area of
109     disagreement surrounded how specific ebuilds should be targeted for inclusion
110     in the stable tree.</p>
111     <p>One suggested solution was a simple branch of the CVS tree and having
112     developers work in two separate branches; one for the stable tree and
113     another for the traditional tree. However, it was felt this would prove too
114     cumbersome in practice.</p>
115     <p>Another suggestion was to have a small group of dedicated gentoo-server
116     developers responsible for generating the contents of the stable tree, which
117     would provide more control and quality assurance over the ebuilds added to the
118     stable tree. While this might prove effective for a small number of ebuilds,
119     it is quite likely that this model would not scale enough to allow for a large
120     number of ebuilds in the stable tree and, over time, the project would become
121     resource constrained and unable to meed future deadlines.</p>
122 g2boojum 1.5 <p>While the original draft of this GLEP called for the creation of a stable
123     keyword, we have since discarded that idea in favor of creating a custom
124     profile, which will be used to track a subset of packages and versions.</p>
125     </div>
126     <div class="section">
127     <h1><a class="toc-backref" href="#id9" id="implementation" name="implementation">Implementation</a></h1>
128     <p>This GLEP will create a new set of cascaded profiles (one per release, not to
129     exceed two per year) which will contain a subset of packages, including
130     versions. This profile will &quot;pin&quot; a Gentoo Linux box to a specific set of
131     packages and will only be updated for security updates and, in rare
132     circumstances, major bug fixes.</p>
133     <p>Because this profile will be cascaded, the option exists for other developers
134     to create their own profile, containing a subset of packages not found in the
135     &quot;main&quot; stable tree and include those as part of the overall stable profile.
136     These cases will be treated on a one-off basis.</p>
137     <p>The initial version will be x86 only, though other people will be encouraged
138     to provide separate stable profiles for other arches. It is expected that any
139     effort to provide a stable tree for any arch or flavor of Gentoo will follow
140     the basic outline of this GLEP to ensure consistency for our users.</p>
141     <p>In addition to a custom profile, this GLEP will also create a separate rsync
142     repository, &quot;gentoo-stable-portage&quot;, which will be available on all servers in
143     the rsync.gentoo.org rotation. This repository will be <em>identical</em> to the
144     main gentoo-portage repository except that the --delete flag will be removed
145     from the rsync option that populates the tree. This will ensure that users of
146     the stable profile will not have to worry about ebuilds for their packages
147     disappearing.</p>
148     <p>Stable profiles will be maintained on an N - 2 basis. That is to say that we
149     will maintain a stable profile for the most current release, plus the previous
150     two releases. With the expected release schedule for 2005, this will result
151     in each profile being supported for approximately 18 months. Future versions
152     of the stable portage tree may seek to increase the life of these profiles.</p>
153 g2boojum 1.1 </div>
154 g2boojum 1.5 <div class="section">
155     <h1><a class="toc-backref" href="#id10" id="backwards-compatibility" name="backwards-compatibility">Backwards Compatibility</a></h1>
156 g2boojum 1.1 <p>All features proposed here are new additions to existing processes and
157     features. There should be no impact on existing features and functionality.</p>
158     </div>
159 g2boojum 1.5 <div class="section">
160     <h1><a class="toc-backref" href="#id11" id="copyright" name="copyright">Copyright</a></h1>
161 g2boojum 1.1 <p>This document is licensed under the Creative Commons - Attribution / Share
162     Alike license. (<a class="reference" href="http://creativecommons.org/licenses/by-sa/1.0">http://creativecommons.org/licenses/by-sa/1.0</a>)</p>
163     </div>
164 g2boojum 1.5
165 g2boojum 1.1 </div>
166 g2boojum 1.5 <div class="footer">
167 g2boojum 1.3 <hr class="footer" />
168 g2boojum 1.1 <a class="reference" href="glep-0019.txt">View document source</a>.
169 antarus 1.8 Generated on: 2007-10-13 13:39 UTC.
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171 g2boojum 1.5
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