.\" Automatically generated by Pod::Man 2.27 (Pod::Simple 3.28) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. Capital omega is used to do unbreakable dashes and .\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, .\" nothing in troff, for use with C<>. .tr \(*W- .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' .ie n \{\ . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} .el\{\ . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' . ds C` . ds C' 'br\} .\" .\" Escape single quotes in literal strings from groff's Unicode transform. .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" .\" If the F register is turned on, we'll generate index entries on stderr for .\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index .\" entries marked with X<> in POD. Of course, you'll have to process the .\" output yourself in some meaningful fashion. .\" .\" Avoid warning from groff about undefined register 'F'. .de IX .. .nr rF 0 .if \n(.g .if rF .nr rF 1 .if (\n(rF:(\n(.g==0)) \{ . if \nF \{ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . if !\nF==2 \{ . nr % 0 . nr F 2 . \} . \} .\} .rr rF .\" ======================================================================== .\" .IX Title "inc::CPAN::Meta::History 3" .TH inc::CPAN::Meta::History 3 "2023-08-30" "perl v5.16.3" "User Contributed Perl Documentation" .\" For nroff, turn off justification. Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" CPAN::Meta::History \- history of CPAN Meta Spec changes .SH "VERSION" .IX Header "VERSION" version 2.143240 .SH "DESCRIPTION" .IX Header "DESCRIPTION" The \s-1CPAN\s0 Meta Spec has gone through several iterations. It was originally written in \s-1HTML\s0 and later revised into \s-1POD \s0(though published in \s-1HTML\s0 generated from the \s-1POD\s0). Fields were added, removed or changed, sometimes by design and sometimes to reflect real-world usage after the fact. .PP This document reconstructs the history of the \s-1CPAN\s0 Meta Spec based on change logs, repository commit messages and the published \s-1HTML\s0 files. In some cases, particularly prior to version 1.2, the exact version when certain fields were introduced or changed is inconsistent between sources. When in doubt, the published \s-1HTML\s0 files for versions 1.0 to 1.4 as they existed when version 2 was developed are used as the definitive source. .PP Starting with version 2, the specification document is part of the CPAN-Meta distribution and will be published on \s-1CPAN\s0 as CPAN::Meta::Spec. .PP Going forward, specification version numbers will be integers and decimal portions will correspond to a release date for the CPAN::Meta library. .SH "HISTORY" .IX Header "HISTORY" .SS "Version 2" .IX Subsection "Version 2" April 2010 .IP "\(bu" 4 Revised spec examples as perl data structures rather than \s-1YAML\s0 .IP "\(bu" 4 Switched to \s-1JSON\s0 serialization from \s-1YAML\s0 .IP "\(bu" 4 Specified allowed version number formats .IP "\(bu" 4 Replaced 'requires', 'build_requires', 'configure_requires', \&'recommends' and 'conflicts' with new 'prereqs' data structure divided by \fIphase\fR (configure, build, test, runtime, etc.) and \fIrelationship\fR (requires, recommends, suggests, conflicts) .IP "\(bu" 4 Added support for 'develop' phase for requirements for maintaining a list of authoring tools .IP "\(bu" 4 Changed 'license' to a list and revised the set of valid licenses .IP "\(bu" 4 Made 'dynamic_config' mandatory to reduce confusion .IP "\(bu" 4 Changed 'resources' subkey 'repository' to a hash that clarifies repository type, url for browsing and url for checkout .IP "\(bu" 4 Changed 'resources' subkey 'bugtracker' to a hash for either web or mailto resource .IP "\(bu" 4 Changed specification of 'optional_features': .RS 4 .IP "\(bu" 4 Added formal specification and usage guide instead of just example .IP "\(bu" 4 Changed to use new prereqs data structure instead of individual keys .RE .RS 4 .RE .IP "\(bu" 4 Clarified intended use of 'author' as generalized contact list .IP "\(bu" 4 Added 'release_status' field to indicate stable, testing or unstable status to provide hints to indexers .IP "\(bu" 4 Added 'description' field for a longer description of the distribution .IP "\(bu" 4 Formalized use of \*(L"x_\*(R" or \*(L"X_\*(R" for all custom keys not listed in the official spec .SS "Version 1.4" .IX Subsection "Version 1.4" June 2008 .IP "\(bu" 4 Noted explicit support for 'perl' in prerequisites .IP "\(bu" 4 Added 'configure_requires' prerequisite type .IP "\(bu" 4 Changed 'optional_features' .RS 4 .IP "\(bu" 4 Example corrected to show map of maps instead of list of maps (though descriptive text said 'map' even in v1.3) .IP "\(bu" 4 Removed 'requires_packages', 'requires_os' and 'excluded_os' as valid subkeys .RE .RS 4 .RE .SS "Version 1.3" .IX Subsection "Version 1.3" November 2006 .IP "\(bu" 4 Added 'no_index' subkey 'directory' and removed 'dir' to match actual usage in the wild .IP "\(bu" 4 Added a 'repository' subkey to 'resources' .SS "Version 1.2" .IX Subsection "Version 1.2" August 2005 .IP "\(bu" 4 Re-wrote and restructured spec in \s-1POD\s0 syntax .IP "\(bu" 4 Changed 'name' to be mandatory .IP "\(bu" 4 Changed 'generated_by' to be mandatory .IP "\(bu" 4 Changed 'license' to be mandatory .IP "\(bu" 4 Added version range specifications for prerequisites .IP "\(bu" 4 Added required 'abstract' field .IP "\(bu" 4 Added required 'author' field .IP "\(bu" 4 Added required 'meta\-spec' field to define 'version' (and 'url') of the \&\s-1CPAN\s0 Meta Spec used for metadata .IP "\(bu" 4 Added 'provides' field .IP "\(bu" 4 Added 'no_index' field and deprecated 'private' field. 'no_index' subkeys include 'file', 'dir', 'package' and 'namespace' .IP "\(bu" 4 Added 'keywords' field .IP "\(bu" 4 Added 'resources' field with subkeys 'homepage', 'license', and \&'bugtracker' .IP "\(bu" 4 Added 'optional_features' field as an alternate under 'recommends'. Includes 'description', 'requires', 'build_requires', 'conflicts', \&'requires_packages', 'requires_os' and 'excluded_os' as valid subkeys .IP "\(bu" 4 Removed 'license_uri' field .SS "Version 1.1" .IX Subsection "Version 1.1" May 2003 .IP "\(bu" 4 Changed 'version' to be mandatory .IP "\(bu" 4 Added 'private' field .IP "\(bu" 4 Added 'license_uri' field .SS "Version 1.0" .IX Subsection "Version 1.0" March 2003 .IP "\(bu" 4 Original release (in \s-1HTML\s0 format only) .IP "\(bu" 4 Included 'name', 'version', 'license', 'distribution_type', 'requires', \&'recommends', 'build_requires', 'conflicts', 'dynamic_config', \&'generated_by' .SH "AUTHORS" .IX Header "AUTHORS" .IP "\(bu" 4 David Golden .IP "\(bu" 4 Ricardo Signes .SH "COPYRIGHT AND LICENSE" .IX Header "COPYRIGHT AND LICENSE" This software is copyright (c) 2010 by David Golden and Ricardo Signes. .PP This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.