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27     <div class="document">
28     <table class="rfc2822 field-list" frame="void" rules="none">
29     <col class="field-name" />
30     <col class="field-body" />
31     <tbody valign="top">
32     <tr class="field"><th class="field-name">GLEP:</th><td class="field-body">34</td>
33     </tr>
34     <tr class="field"><th class="field-name">Title:</th><td class="field-body">Per-Category metadata.xml Files</td>
35     </tr>
36     <tr class="field"><th class="field-name">Version:</th><td class="field-body">1.1</td>
37     </tr>
38     <tr class="field"><th class="field-name">Author:</th><td class="field-body">Ciaran McCreesh &lt;ciaranm&#32;&#97;t&#32;gentoo.org&gt;</td>
39     </tr>
40     <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/xml/htdocs/proj/en/glep/glep-0034.txt?cvsroot=gentoo">2005/03/11 19:07:16</a></td>
41     </tr>
42     <tr class="field"><th class="field-name">Status:</th><td class="field-body">Draft</td>
43     </tr>
44     <tr class="field"><th class="field-name">Type:</th><td class="field-body">Standards Track</td>
45     </tr>
46     <tr class="field"><th class="field-name">Content-Type:</th><td class="field-body"><a class="reference" href="glep-0012.html">text/x-rst</a></td>
47     </tr>
48 g2boojum 1.2 <tr class="field"><th class="field-name">Created:</th><td class="field-body">11-March-2005</td>
49 g2boojum 1.1 </tr>
50 g2boojum 1.2 <tr class="field"><th class="field-name">Post-Date:</th><td class="field-body">11-March-2005, 13-March-2005</td>
51 g2boojum 1.1 </tr>
52     </tbody>
53     </table>
54     <hr />
55     <div class="contents topic" id="contents">
56     <p class="topic-title first"><a name="contents">Contents</a></p>
57     <ul class="simple">
58     <li><a class="reference" href="#abstract" id="id9" name="id9">Abstract</a></li>
59     <li><a class="reference" href="#motivation" id="id10" name="id10">Motivation</a></li>
60     <li><a class="reference" href="#specification" id="id11" name="id11">Specification</a><ul>
61     <li><a class="reference" href="#examples" id="id12" name="id12">Examples</a></li>
62     <li><a class="reference" href="#implementation-requirements" id="id13" name="id13">Implementation Requirements</a></li>
63     </ul>
64     </li>
65 g2boojum 1.2 <li><a class="reference" href="#backwards-compatibility" id="id14" name="id14">Backwards Compatibility</a></li>
66 g2boojum 1.1 <li><a class="reference" href="#references" id="id15" name="id15">References</a></li>
67     <li><a class="reference" href="#copyright" id="id16" name="id16">Copyright</a></li>
68     </ul>
69     </div>
70     <div class="section" id="abstract">
71     <h1><a class="toc-backref" href="#id9" name="abstract">Abstract</a></h1>
72     <p>A <tt class="literal"><span class="pre">metadata.xml</span></tt> file <a class="footnote-reference" href="#id6" id="id1" name="id1">[1]</a> is currently used to provide extra metadata
73     (long descriptions, herd and maintainer information) about a package. It
74     is proposed that these files also be used to describe the purpose of a
75     category.</p>
76     </div>
77     <div class="section" id="motivation">
78     <h1><a class="toc-backref" href="#id10" name="motivation">Motivation</a></h1>
79     <p>Category names are short and not entirely clear. Adding arbitrary length
80     long descriptions to categories would provide several advantages:</p>
81     <ul class="simple">
82     <li>It would clarify the meaning of categories for users, who may not be
83     aware of some of the abbreviations or acronyms we use.</li>
84     <li>With the use of XML <tt class="literal"><span class="pre">lang=&quot;&quot;</span></tt> attributes, it would allow for
85     additional non-English descriptions (simply using longer category names
86     would not allow this).</li>
87     <li>It would help developers better select a relevant category for their
88     package, rather than dumping everything into <tt class="literal"><span class="pre">sys-apps</span></tt> and
89     <tt class="literal"><span class="pre">app-misc</span></tt> as is done currently.</li>
90     <li>It would help illustrate which categories are too broad or badly defined
91     in scope, making any future category splits easier.</li>
92     </ul>
93     </div>
94     <div class="section" id="specification">
95     <h1><a class="toc-backref" href="#id11" name="specification">Specification</a></h1>
96     <p>It is proposed that the existing <tt class="literal"><span class="pre">metadata.xml</span></tt> format <a class="footnote-reference" href="#id6" id="id2" name="id2">[1]</a> be used.
97     Even though XML sucks, there is already a framework in place for these
98     files. The filename will be <tt class="literal"><span class="pre">blah-misc/metadata.xml</span></tt>. The character set
99     used shall be UTF-8 for consistency with GLEP 31 <a class="footnote-reference" href="#id7" id="id3" name="id3">[2]</a>.</p>
100 g2boojum 1.2 <p>A new top level <tt class="literal"><span class="pre">&lt;catmetadata&gt;</span></tt> element shall be added to the DTD. This
101     is necessary because the existing <tt class="literal"><span class="pre">&lt;pkgmetadata&gt;</span></tt> element is not
102     appropriately named, and doing a global rename would be impractical. Using
103     a different element would also permit additional category-specific data to
104     be added at a later date.</p>
105 g2boojum 1.1 <p>The existing <tt class="literal"><span class="pre">&lt;longdescription&gt;</span></tt> elements shall be used for
106     descriptions. The <tt class="literal"><span class="pre">lang</span></tt> attribute shall be used to indicate the human
107     language of the description -- all categories must have at least an
108     English (<tt class="literal"><span class="pre">en</span></tt>) description.</p>
109     <p>The <tt class="literal"><span class="pre">&lt;herd&gt;</span></tt> and <tt class="literal"><span class="pre">&lt;maintainer&gt;</span></tt> elements are not generally relevant at
110 g2boojum 1.2 the category level. They may be specified as a fall-back &quot;assume that
111     everything in this category is maintained by these people&quot;, but this must
112     not be used as a replacement for proper per-package metadata.</p>
113 g2boojum 1.1 <div class="section" id="examples">
114     <h2><a class="toc-backref" href="#id12" name="examples">Examples</a></h2>
115     <p>The <tt class="literal"><span class="pre">app-vim</span></tt> category could use a <tt class="literal"><span class="pre">metadata.xml</span></tt> file like the
116     following:</p>
117     <pre class="literal-block">
118     &lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
119     &lt;!DOCTYPE catmetadata SYSTEM &quot;http://www.gentoo.org/dtd/metadata.dtd&quot;&gt;
120     &lt;catmetadata&gt;
121     &lt;longdescription lang=&quot;en&quot;&gt;
122     The app-vim category contains plugins and syntax file
123     packages for the Vim text editor.
124     &lt;/longdescription&gt;
125     &lt;longdescription lang=&quot;de&quot;&gt;
126     Die Kategorie app-vim enthält Plugins und Syntax-Pakete
127     für den Vim Texteditor.
128     &lt;/longdescription&gt;
129     &lt;/catmetadata&gt;
130     </pre>
131     </div>
132     <div class="section" id="implementation-requirements">
133     <h2><a class="toc-backref" href="#id13" name="implementation-requirements">Implementation Requirements</a></h2>
134     <p>The DTD file would need to be updated to include the <tt class="literal"><span class="pre">&lt;catmetadata&gt;</span></tt>
135     element.</p>
136     <p>A metadata file would have to be added to every category in the tree. This
137     could be done over a period of time.</p>
138 g2boojum 1.2 <p><tt class="literal"><span class="pre">repoman</span></tt> would need a few small changes to be able to handle
139     per-category metadata files.</p>
140 g2boojum 1.1 <p>The &quot;packages.gentoo.org metadata&quot; bug <a class="footnote-reference" href="#id8" id="id4" name="id4">[3]</a> would need to be
141     updated to ask for category descriptions as well.</p>
142     <p>The metadata documentation <a class="footnote-reference" href="#id6" id="id5" name="id5">[1]</a> would require some additions.</p>
143     </div>
144     </div>
145 g2boojum 1.2 <div class="section" id="backwards-compatibility">
146     <h1><a class="toc-backref" href="#id14" name="backwards-compatibility">Backwards Compatibility</a></h1>
147 g2boojum 1.1 <p>The metadata DTD will remain backwards compatible.</p>
148     <p>The category metadata files will need to be considered &quot;optional until
149     implemented&quot; rather than immediately becoming mandatory.</p>
150     </div>
151     <div class="section" id="references">
152     <h1><a class="toc-backref" href="#id15" name="references">References</a></h1>
153     <table class="footnote" frame="void" id="id6" rules="none">
154     <colgroup><col class="label" /><col /></colgroup>
155     <tbody valign="top">
156     <tr><td class="label"><a name="id6">[1]</a></td><td><em>(<a class="fn-backref" href="#id1">1</a>, <a class="fn-backref" href="#id2">2</a>, <a class="fn-backref" href="#id5">3</a>)</em> Gentoo Metadata,
157     (<a class="reference" href="http://www.gentoo.org/proj/en/devrel/handbook/handbook.xml?part=2&amp;chap=4">http://www.gentoo.org/proj/en/devrel/handbook/handbook.xml?part=2&amp;chap=4</a>)</td></tr>
158     </tbody>
159     </table>
160     <table class="footnote" frame="void" id="id7" rules="none">
161     <colgroup><col class="label" /><col /></colgroup>
162     <tbody valign="top">
163     <tr><td class="label"><a class="fn-backref" href="#id3" name="id7">[2]</a></td><td>GLEP 31: Character Sets for Portage Tree Items
164     (<a class="reference" href="http://www.gentoo.org/proj/en/glep/glep-0031.html">http://www.gentoo.org/proj/en/glep/glep-0031.html</a>)</td></tr>
165     </tbody>
166     </table>
167     <table class="footnote" frame="void" id="id8" rules="none">
168     <colgroup><col class="label" /><col /></colgroup>
169     <tbody valign="top">
170     <tr><td class="label"><a class="fn-backref" href="#id4" name="id8">[3]</a></td><td>Gentoo bug 66917
171     (<a class="reference" href="http://bugs.gentoo.org/show_bug.cgi?id=66917">http://bugs.gentoo.org/show_bug.cgi?id=66917</a>)</td></tr>
172     </tbody>
173     </table>
174     </div>
175     <div class="section" id="copyright">
176     <h1><a class="toc-backref" href="#id16" name="copyright">Copyright</a></h1>
177     <p>This document has been placed in the public domain.</p>
178 g2boojum 1.2 <!-- vim: set tw=74 fileencoding=utf-8 : -->
179 g2boojum 1.1 </div>
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