3 perlpolicy - Various and sundry policies and commitments related to the perl core
7 This document is the master document which records all written
8 policies about how the Perl 5 Porters collectively develop and maintain
12 =head1 MAINTENANCE BRANCHES
18 New releases of maint should contain as few changes as possible.
19 If there is any question about whether a given patch might merit
20 inclusion in a maint release, then it almost certainly should not
25 Portability fixes, such as changes to Configure and the files in
26 hints/ are acceptable. Ports of Perl to a new platform, architecture
27 or OS release that involve changes to the implementation are NOT
32 Documentation updates are acceptable.
36 Patches that add new warnings or errors or deprecate features
41 Patches that fix crashing bugs that do not otherwise change Perl's
42 functionality or negatively impact performance are acceptable.
46 Patches that fix CVEs or security issues are acceptable, but should
47 be run through the perl5-security-report@perl.org mailing list
48 rather than applied directly.
52 Updates to dual-life modules should consist of minimal patches to
53 fix crashing or security issues (as above).
57 New versions of dual-life modules should NOT be imported into maint.
58 Those belong in the next stable series.
62 Patches that add or remove features are not acceptable.
66 Patches that break binary compatibility are not acceptable. (Please
72 =head2 Getting changes into a maint branch
74 Historically, only the pumpking cherry-picked changes from bleadperl
75 into maintperl. This has...scaling problems. At the same time,
76 maintenance branches of stable versions of Perl need to be treated with
77 great care. To that end, we're going to try out a new process for
80 Any committer may cherry-pick any commit from blead to maint-5.12 if
81 they send mail to perl5-porters announcing their intent to cherry-pick
82 a specific commit along with a rationale for doing so and at least two
83 other committers respond to the list giving their assent. (This policy
84 applies to current and former pumpkings, as well as other committers.)
86 =head1 CONTRIBUTED MODULES
89 =head2 A Social Contract about Artistic Control
91 What follows is a statement about artistic control, defined as the ability
92 of authors of packages to guide the future of their code and maintain
93 control over their work. It is a recognition that authors should have
94 control over their work, and that it is a responsibility of the rest of
95 the Perl community to ensure that they retain this control. It is an
96 attempt to document the standards to which we, as Perl developers, intend
97 to hold ourselves. It is an attempt to write down rough guidelines about
98 the respect we owe each other as Perl developers.
100 This statement is not a legal contract. This statement is not a legal
101 document in any way, shape, or form. Perl is distributed under the GNU
102 Public License and under the Artistic License; those are the precise legal
103 terms. This statement isn't about the law or licenses. It's about
104 community, mutual respect, trust, and good-faith cooperation.
106 We recognize that the Perl core, defined as the software distributed with
107 the heart of Perl itself, is a joint project on the part of all of us.
108 From time to time, a script, module, or set of modules (hereafter referred
109 to simply as a "module") will prove so widely useful and/or so integral to
110 the correct functioning of Perl itself that it should be distributed with
111 Perl core. This should never be done without the author's explicit
112 consent, and a clear recognition on all parts that this means the module
113 is being distributed under the same terms as Perl itself. A module author
114 should realize that inclusion of a module into the Perl core will
115 necessarily mean some loss of control over it, since changes may
116 occasionally have to be made on short notice or for consistency with the
119 Once a module has been included in the Perl core, however, everyone
120 involved in maintaining Perl should be aware that the module is still the
121 property of the original author unless the original author explicitly
122 gives up their ownership of it. In particular:
128 The version of the module in the core should still be considered the
129 work of the original author. All patches, bug reports, and so
130 forth should be fed back to them. Their development directions
131 should be respected whenever possible.
135 Patches may be applied by the pumpkin holder without the explicit
136 cooperation of the module author if and only if they are very minor,
137 time-critical in some fashion (such as urgent security fixes), or if
138 the module author cannot be reached. Those patches must still be
139 given back to the author when possible, and if the author decides on
140 an alternate fix in their version, that fix should be strongly
141 preferred unless there is a serious problem with it. Any changes not
142 endorsed by the author should be marked as such, and the contributor
143 of the change acknowledged.
147 The version of the module distributed with Perl should, whenever
148 possible, be the latest version of the module as distributed by the
149 author (the latest non-beta version in the case of public Perl
150 releases), although the pumpkin holder may hold off on upgrading the
151 version of the module distributed with Perl to the latest version
152 until the latest version has had sufficient testing.
156 In other words, the author of a module should be considered to have final
157 say on modifications to their module whenever possible (bearing in mind
158 that it's expected that everyone involved will work together and arrive at
159 reasonable compromises when there are disagreements).
161 As a last resort, however:
164 If the author's vision of the future of their module is sufficiently
165 different from the vision of the pumpkin holder and perl5-porters as a
166 whole so as to cause serious problems for Perl, the pumpkin holder may
167 choose to formally fork the version of the module in the core from the
168 one maintained by the author. This should not be done lightly and
169 should B<always> if at all possible be done only after direct input
170 from Larry. If this is done, it must then be made explicit in the
171 module as distributed with Perl core that it is a forked version and
172 that while it is based on the original author's work, it is no longer
173 maintained by them. This must be noted in both the documentation and
174 in the comments in the source of the module.
176 Again, this should be a last resort only. Ideally, this should never
177 happen, and every possible effort at cooperation and compromise should be
178 made before doing this. If it does prove necessary to fork a module for
179 the overall health of Perl, proper credit must be given to the original
180 author in perpetuity and the decision should be constantly re-evaluated to
181 see if a remerging of the two branches is possible down the road.
183 In all dealings with contributed modules, everyone maintaining Perl should
184 keep in mind that the code belongs to the original author, that they may
185 not be on perl5-porters at any given time, and that a patch is not
186 official unless it has been integrated into the author's copy of the
187 module. To aid with this, and with points #1, #2, and #3 above, contact
188 information for the authors of all contributed modules should be kept with
189 the Perl distribution.
191 Finally, the Perl community as a whole recognizes that respect for
192 ownership of code, respect for artistic control, proper credit, and active
193 effort to prevent unintentional code skew or communication gaps is vital
194 to the health of the community and Perl itself. Members of a community
195 should not normally have to resort to rules and laws to deal with each
196 other, and this document, although it contains rules so as to be clear, is
197 about an attitude and general approach. The first step in any dispute
198 should be open communication, respect for opposing views, and an attempt
199 at a compromise. In nearly every circumstance nothing more will be
200 necessary, and certainly no more drastic measure should be used until
201 every avenue of communication and discussion has failed.
205 Social Contract about Contributed Modules originally by Russ Allbery E<lt>rra@stanford.eduE<gt> and the perl5-porters.