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23 <table class="rfc2822 docutils field-list" frame="void" rules="none">
24 <col class="field-name" />
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26 <tbody valign="top">
27 <tr class="field"><th class="field-name">GLEP:</th><td class="field-body">23</td>
28 </tr>
29 <tr class="field"><th class="field-name">Title:</th><td class="field-body">Handling of ACCEPT_LICENSE</td>
30 </tr>
31 <tr class="field"><th class="field-name">Version:</th><td class="field-body">1.7</td>
32 </tr>
33 <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-0023.txt?cvsroot=gentoo">2006/11/21 00:02:05</a></td>
34 </tr>
35 <tr class="field"><th class="field-name">Author:</th><td class="field-body">Jason Stubbs &lt;jstubbs&#32;&#97;t&#32;gentoo.org&gt;, Marius Mauch &lt;genone&#32;&#97;t&#32;gentoo.org&gt;</td>
36 </tr>
37 <tr class="field"><th class="field-name">Status:</th><td class="field-body">Accepted</td>
38 </tr>
39 <tr class="field"><th class="field-name">Type:</th><td class="field-body">Standards Track</td>
40 </tr>
41 <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 </tr>
43 <tr class="field"><th class="field-name">Created:</th><td class="field-body">9-Mar-2004</td>
44 </tr>
45 <tr class="field"><th class="field-name">Post-History:</th><td class="field-body">8-Mar-2004 10-Mar-2004 25-Oct-2004 18-Nov-2006 21-Nov-2006</td>
46 </tr>
47 </tbody>
48 </table>
49 <hr />
50 <div class="contents topic">
51 <p class="topic-title first"><a id="contents" name="contents">Contents</a></p>
52 <ul class="simple">
53 <li><a class="reference" href="#abstract" id="id5" name="id5">Abstract</a></li>
54 <li><a class="reference" href="#status-update" id="id6" name="id6">Status Update</a></li>
55 <li><a class="reference" href="#motivation" id="id7" name="id7">Motivation</a></li>
56 <li><a class="reference" href="#specification" id="id8" name="id8">Specification</a><ul>
57 <li><a class="reference" href="#ebuild-license-variable" id="id9" name="id9">Ebuild LICENSE Variable</a></li>
58 <li><a class="reference" href="#license-groups" id="id10" name="id10">License Groups</a></li>
59 <li><a class="reference" href="#accept-license" id="id11" name="id11">ACCEPT_LICENSE</a></li>
60 <li><a class="reference" href="#behaviour" id="id12" name="id12">Behaviour</a></li>
61 </ul>
62 </li>
63 <li><a class="reference" href="#rationale" id="id13" name="id13">Rationale</a></li>
64 <li><a class="reference" href="#reference-implementation" id="id14" name="id14">Reference Implementation</a></li>
65 <li><a class="reference" href="#backwards-compatibility" id="id15" name="id15">Backwards Compatibility</a></li>
66 <li><a class="reference" href="#references" id="id16" name="id16">References</a></li>
67 <li><a class="reference" href="#copyright" id="id17" name="id17">Copyright</a></li>
68 </ul>
69 </div>
70 <div class="section">
71 <h1><a class="toc-backref" href="#id5" id="abstract" name="abstract">Abstract</a></h1>
72 <p>Currently, every ebuild in the main gentoo repository is required to have a
73 valid LICENSE entry. However, the syntax of this entry is not officially
74 defined and the entry itself is only used when outputting package
75 details.</p>
76 </div>
77 <div class="section">
78 <h1><a class="toc-backref" href="#id6" id="status-update" name="status-update">Status Update</a></h1>
79 <p>Repoman has been updated to check for the LICENSE syntax.
80 A development portage branch with support for ACCEPT_LICENSE
81 and license groups exists.</p>
82 </div>
83 <div class="section">
84 <h1><a class="toc-backref" href="#id7" id="motivation" name="motivation">Motivation</a></h1>
85 <p>Many users wish to regulate the software they install with regards to
86 licenses for various reasons <a class="footnote-reference" href="#id3" id="id1" name="id1">[1]</a>. Some want a system free of any
87 software that is not OSI-approved; others are simply curious as to what
88 licenses they are implicitly accepting.</p>
89 <p>Furthermore, some software requires that a user interactively accept its
90 license for its author's to consider it legally binding. This is
91 currently implemented using <tt class="docutils literal"><span class="pre">eutils.eclass</span></tt>.</p>
92 </div>
93 <div class="section">
94 <h1><a class="toc-backref" href="#id8" id="specification" name="specification">Specification</a></h1>
95 <div class="section">
96 <h2><a class="toc-backref" href="#id9" id="ebuild-license-variable" name="ebuild-license-variable">Ebuild LICENSE Variable</a></h2>
97 <p>Most ebuilds are for software which is released under a single license.
98 In these cases, the current LICENSE variable can remain as is. For
99 example:</p>
100 <pre class="literal-block">
101 LICENSE=&quot;single-license&quot;
102 </pre>
103 <p>However, there are several ebuilds for software which is released under
104 several licenses, of which the user must accept one, some or all <a class="footnote-reference" href="#id4" id="id2" name="id2">[2]</a>.
105 To complicate this, some ebuilds include optional components which fall
106 under a different license.</p>
107 <p>To accomodate these cases, LICENSE syntax should accomodate all
108 functionality offered by a DEPEND string. To keep things simple, this
109 GLEP proposes that the syntax be identical. For example:</p>
110 <pre class="literal-block">
111 LICENSE=&quot;mandatory-license
112 || ( choosable-licence1 chooseable-license-2 )
113 useflag? ( optional-component-license )&quot;
114 </pre>
115 <p>License names may contain [a-zA-Z0-9] (english alphanumeric characters),
116 _ (underscore), - (dash), . (dot) and + (plus sign).</p>
117 </div>
118 <div class="section">
119 <h2><a class="toc-backref" href="#id10" id="license-groups" name="license-groups">License Groups</a></h2>
120 <p>Almost all users are willing to install any software that is
121 FSF-approved. Other users are willing to install any software and
122 implicitly accept its license. To this end, implementations will also
123 need to handle grouping of licenses.</p>
124 <p>At a minimum, there needs to be the groups <tt class="docutils literal"><span class="pre">GPL-COMPATIBLE</span></tt>,
125 <tt class="docutils literal"><span class="pre">FSF-APPROVED</span></tt>, <tt class="docutils literal"><span class="pre">OSI-APPROVED</span></tt> and <tt class="docutils literal"><span class="pre">NON-MUST-HAVE-READ</span></tt>.
126 <tt class="docutils literal"><span class="pre">NON-MUST-HAVE-READ</span></tt> licenses are those that don't require manual
127 acceptance for to be considered legally binding. This is the current
128 behaviour of portage.</p>
129 <p>These groups are defined in a new file <tt class="docutils literal"><span class="pre">license_groups</span></tt> in
130 the <tt class="docutils literal"><span class="pre">profiles</span></tt> subdirectory of the tree (or overlays).
131 Details of handling groups defined in overlays is implementation dependent.</p>
132 <p>The format of this file is</p>
133 <pre class="literal-block">
134 &lt;groupname&gt; &lt;license1&gt; &lt;license2&gt; ... &lt;licenseN&gt;
135 </pre>
136 <p>Also any line starting with # is ignored and may be used for comments.
137 Group names use the same syntax as normal license names. Also license groups
138 may contain other groups.
139 License groups may not contain negated elements, so a group</p>
140 <pre class="literal-block">
141 mygroup foo -bar -bla
142 </pre>
143 <p>is illegal.</p>
144 </div>
145 <div class="section">
146 <h2><a class="toc-backref" href="#id11" id="accept-license" name="accept-license">ACCEPT_LICENSE</a></h2>
147 <p>This GLEP proposes that a user be able to explicitly accept or decline
148 licenses by editing a new variable <tt class="docutils literal"><span class="pre">ACCEPT_LICENSE</span></tt> in
149 <tt class="docutils literal"><span class="pre">/etc/make.conf</span></tt>. Again, to keep things simple, the syntax should be
150 similar to that of other incrementals. For example:</p>
151 <pre class="literal-block">
152 ACCEPT_LICENSE=&quot;-* accepted-license -declined-license&quot;
153 </pre>
154 <p>As an extension, <tt class="docutils literal"><span class="pre">ACCEPT_LICENSE</span></tt> must also support <a class="reference" href="#license-groups">license groups</a>.
155 This GLEP proposes that the license group be prepended by the special
156 character &quot;<tt class="docutils literal"><span class="pre">&#64;</span></tt>&quot;. For example:</p>
157 <pre class="literal-block">
158 ACCEPT_LICENSE=&quot;-* &#64;FSF-APPROVED&quot;
159 </pre>
160 <p>License groups may be negated with the result that all elements of that group
161 are also negated.</p>
162 <p>Portage will also offer a package.license facility to offer this functionality
163 on a per-package base (analog to package.keywords), other implementations may
164 implement such a facility differently or not at all.</p>
165 </div>
166 <div class="section">
167 <h2><a class="toc-backref" href="#id12" id="behaviour" name="behaviour">Behaviour</a></h2>
168 <p>Unaccepted licenses will be treated like any other masked package, that is
169 the user interface of an implementation will display a message listing any
170 license that has to be accepted before the package can be merged with a
171 pointer to the exact license text.</p>
172 <p>Past versions of this document proposed to handle license-masked packages
173 like blockers, but this would be inconsistent with other visibility
174 filters as well as the current blocker system (as a blocker affects two
175 packages) and be more complicated to implement.</p>
176 </div>
177 </div>
178 <div class="section">
179 <h1><a class="toc-backref" href="#id13" id="rationale" name="rationale">Rationale</a></h1>
180 <p>An implementation of this proposal should make it easy for users wishing
181 to regulate their software without affecting those that don't.</p>
182 </div>
183 <div class="section">
184 <h1><a class="toc-backref" href="#id14" id="reference-implementation" name="reference-implementation">Reference Implementation</a></h1>
185 <p>Available in portage svn repository under main/branches/license-masking</p>
186 </div>
187 <div class="section">
188 <h1><a class="toc-backref" href="#id15" id="backwards-compatibility" name="backwards-compatibility">Backwards Compatibility</a></h1>
189 <p>There should be no change to the user experience without the user
190 explicitly choosing to do so. This mandates that the
191 configuration variable be named <tt class="docutils literal"><span class="pre">ACCEPT_LICENSE</span></tt> as some users may
192 already have it set due to ebuilds using <tt class="docutils literal"><span class="pre">eutil.eclass</span></tt>'s
193 implementation. It also mandates that the default <tt class="docutils literal"><span class="pre">ACCEPT_LICENSE</span></tt> be
194 set to <tt class="docutils literal"><span class="pre">&#64;NON-MUST-HAVE-READ</span></tt> in the main gentoo repository as implementations
195 are not required to provide an internal default.</p>
196 </div>
197 <div class="section">
198 <h1><a class="toc-backref" href="#id16" id="references" name="references">References</a></h1>
199 <table class="docutils footnote" frame="void" id="id3" rules="none">
200 <colgroup><col class="label" /><col /></colgroup>
201 <tbody valign="top">
202 <tr><td class="label"><a class="fn-backref" href="#id1" name="id3">[1]</a></td><td>Gentoo Linux Bug 17367
203 (<a class="reference" href="http://bugs.gentoo.org/show_bug.cgi?id=17367">http://bugs.gentoo.org/show_bug.cgi?id=17367</a>)</td></tr>
204 </tbody>
205 </table>
206 <table class="docutils footnote" frame="void" id="id4" rules="none">
207 <colgroup><col class="label" /><col /></colgroup>
208 <tbody valign="top">
209 <tr><td class="label"><a class="fn-backref" href="#id2" name="id4">[2]</a></td><td>Gentoo Linux Bug 34146
210 (<a class="reference" href="http://bugs.gentoo.org/show_bug.cgi?id=34146">http://bugs.gentoo.org/show_bug.cgi?id=34146</a>)</td></tr>
211 </tbody>
212 </table>
213 </div>
214 <div class="section">
215 <h1><a class="toc-backref" href="#id17" id="copyright" name="copyright">Copyright</a></h1>
216 <p>This document has been placed in the public domain.</p>
217 </div>
219 </div>
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