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
13 =head1 CONTRIBUTED MODULES
16 =head2 A Social Contract about Artistic Control
18 What follows is a statement about artistic control, defined as the ability
19 of authors of packages to guide the future of their code and maintain
20 control over their work. It is a recognition that authors should have
21 control over their work, and that it is a responsibility of the rest of
22 the Perl community to ensure that they retain this control. It is an
23 attempt to document the standards to which we, as Perl developers, intend
24 to hold ourselves. It is an attempt to write down rough guidelines about
25 the respect we owe each other as Perl developers.
27 This statement is not a legal contract. This statement is not a legal
28 document in any way, shape, or form. Perl is distributed under the GNU
29 Public License and under the Artistic License; those are the precise legal
30 terms. This statement isn't about the law or licenses. It's about
31 community, mutual respect, trust, and good-faith cooperation.
33 We recognize that the Perl core, defined as the software distributed with
34 the heart of Perl itself, is a joint project on the part of all of us.
35 From time to time, a script, module, or set of modules (hereafter referred
36 to simply as a "module") will prove so widely useful and/or so integral to
37 the correct functioning of Perl itself that it should be distributed with
38 Perl core. This should never be done without the author's explicit
39 consent, and a clear recognition on all parts that this means the module
40 is being distributed under the same terms as Perl itself. A module author
41 should realize that inclusion of a module into the Perl core will
42 necessarily mean some loss of control over it, since changes may
43 occasionally have to be made on short notice or for consistency with the
46 Once a module has been included in the Perl core, however, everyone
47 involved in maintaining Perl should be aware that the module is still the
48 property of the original author unless the original author explicitly
49 gives up their ownership of it. In particular:
55 The version of the module in the core should still be considered the
56 work of the original author. All patches, bug reports, and so
57 forth should be fed back to them. Their development directions
58 should be respected whenever possible.
62 Patches may be applied by the pumpkin holder without the explicit
63 cooperation of the module author if and only if they are very minor,
64 time-critical in some fashion (such as urgent security fixes), or if
65 the module author cannot be reached. Those patches must still be
66 given back to the author when possible, and if the author decides on
67 an alternate fix in their version, that fix should be strongly
68 preferred unless there is a serious problem with it. Any changes not
69 endorsed by the author should be marked as such, and the contributor
70 of the change acknowledged.
74 The version of the module distributed with Perl should, whenever
75 possible, be the latest version of the module as distributed by the
76 author (the latest non-beta version in the case of public Perl
77 releases), although the pumpkin holder may hold off on upgrading the
78 version of the module distributed with Perl to the latest version
79 until the latest version has had sufficient testing.
83 In other words, the author of a module should be considered to have final
84 say on modifications to their module whenever possible (bearing in mind
85 that it's expected that everyone involved will work together and arrive at
86 reasonable compromises when there are disagreements).
88 As a last resort, however:
91 If the author's vision of the future of their module is sufficiently
92 different from the vision of the pumpkin holder and perl5-porters as a
93 whole so as to cause serious problems for Perl, the pumpkin holder may
94 choose to formally fork the version of the module in the core from the
95 one maintained by the author. This should not be done lightly and
96 should B<always> if at all possible be done only after direct input
97 from Larry. If this is done, it must then be made explicit in the
98 module as distributed with Perl core that it is a forked version and
99 that while it is based on the original author's work, it is no longer
100 maintained by them. This must be noted in both the documentation and
101 in the comments in the source of the module.
103 Again, this should be a last resort only. Ideally, this should never
104 happen, and every possible effort at cooperation and compromise should be
105 made before doing this. If it does prove necessary to fork a module for
106 the overall health of Perl, proper credit must be given to the original
107 author in perpetuity and the decision should be constantly re-evaluated to
108 see if a remerging of the two branches is possible down the road.
110 In all dealings with contributed modules, everyone maintaining Perl should
111 keep in mind that the code belongs to the original author, that they may
112 not be on perl5-porters at any given time, and that a patch is not
113 official unless it has been integrated into the author's copy of the
114 module. To aid with this, and with points #1, #2, and #3 above, contact
115 information for the authors of all contributed modules should be kept with
116 the Perl distribution.
118 Finally, the Perl community as a whole recognizes that respect for
119 ownership of code, respect for artistic control, proper credit, and active
120 effort to prevent unintentional code skew or communication gaps is vital
121 to the health of the community and Perl itself. Members of a community
122 should not normally have to resort to rules and laws to deal with each
123 other, and this document, although it contains rules so as to be clear, is
124 about an attitude and general approach. The first step in any dispute
125 should be open communication, respect for opposing views, and an attempt
126 at a compromise. In nearly every circumstance nothing more will be
127 necessary, and certainly no more drastic measure should be used until
128 every avenue of communication and discussion has failed.
132 Social Contract about Contributed Modules originally by Russ Allbery E<lt>rra@stanford.eduE<gt> and the perl5-porters.