CPAN::Meta::History(3p) Perl Programmers Reference Guide #
CPAN::Meta::History(3p) Perl Programmers Reference Guide
NNAAMMEE #
CPAN::Meta::History - history of CPAN Meta Spec changes
VVEERRSSIIOONN #
version 2.150010
DDEESSCCRRIIPPTTIIOONN #
The CPAN Meta Spec has gone through several iterations. It was
originally written in HTML and later revised into POD (though published
in HTML generated from the POD). Fields were added, removed or changed,
sometimes by design and sometimes to reflect real-world usage after the
fact.
This document reconstructs the history of the CPAN Meta Spec based on
change logs, repository commit messages and the published HTML 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 HTML files for versions 1.0 to 1.4
as they existed when version 2 was developed are used as the definitive
source.
Starting with version 2, the specification document is part of the CPAN-
Meta distribution and will be published on CPAN as CPAN::Meta::Spec.
Going forward, specification version numbers will be integers and decimal
portions will correspond to a release date for the CPAN::Meta library.
HHIISSTTOORRYY #
VVeerrssiioonn 22 April 2010
• Revised spec examples as perl data structures rather than YAML
• Switched to JSON serialization from YAML
• Specified allowed version number formats
• Replaced 'requires', 'build_requires', 'configure_requires',
'recommends' and 'conflicts' with new 'prereqs' data structure
divided by _p_h_a_s_e (configure, build, test, runtime, etc.) and
_r_e_l_a_t_i_o_n_s_h_i_p (requires, recommends, suggests, conflicts)
• Added support for 'develop' phase for requirements for maintaining a
list of authoring tools
• Changed 'license' to a list and revised the set of valid licenses
• Made 'dynamic_config' mandatory to reduce confusion
• Changed 'resources' subkey 'repository' to a hash that clarifies
repository type, url for browsing and url for checkout
• Changed 'resources' subkey 'bugtracker' to a hash for either web or
mailto resource
• Changed specification of 'optional_features':
• Added formal specification and usage guide instead of just
example
• Changed to use new prereqs data structure instead of individual
keys
• Clarified intended use of 'author' as generalized contact list
• Added 'release_status' field to indicate stable, testing or unstable
status to provide hints to indexers
• Added 'description' field for a longer description of the
distribution
• Formalized use of "x_" or "X_" for all custom keys not listed in the
official spec
VVeerrssiioonn 11..44 June 2008
• Noted explicit support for 'perl' in prerequisites
• Added 'configure_requires' prerequisite type
• Changed 'optional_features'
• Example corrected to show map of maps instead of list of maps
(though descriptive text said 'map' even in v1.3)
• Removed 'requires_packages', 'requires_os' and 'excluded_os' as
valid subkeys
VVeerrssiioonn 11..33 November 2006
• Added 'no_index' subkey 'directory' and removed 'dir' to match actual
usage in the wild
• Added a 'repository' subkey to 'resources'
VVeerrssiioonn 11..22 August 2005
• Re-wrote and restructured spec in POD syntax
• Changed 'name' to be mandatory
• Changed 'generated_by' to be mandatory
• Changed 'license' to be mandatory
• Added version range specifications for prerequisites
• Added required 'abstract' field
• Added required 'author' field
• Added required 'meta-spec' field to define 'version' (and 'url') of
the CPAN Meta Spec used for metadata
• Added 'provides' field
• Added 'no_index' field and deprecated 'private' field. 'no_index'
subkeys include 'file', 'dir', 'package' and 'namespace'
• Added 'keywords' field
• Added 'resources' field with subkeys 'homepage', 'license', and
'bugtracker'
• 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
• Removed 'license_uri' field
VVeerrssiioonn 11..11 May 2003
• Changed 'version' to be mandatory
• Added 'private' field
• Added 'license_uri' field
VVeerrssiioonn 11..00 March 2003
• Original release (in HTML format only)
• Included 'name', 'version', 'license', 'distribution_type',
'requires', 'recommends', 'build_requires', 'conflicts',
'dynamic_config', 'generated_by'
AAUUTTHHOORRSS #
• David Golden <dagolden@cpan.org>
• Ricardo Signes <rjbs@cpan.org>
• Adam Kennedy <adamk@cpan.org>
CCOOPPYYRRIIGGHHTT AANNDD LLIICCEENNSSEE #
This software is copyright (c) 2010 by David Golden, Ricardo Signes, Adam
Kennedy and Contributors.
This is free software; you can redistribute it and/or modify it under the
same terms as the Perl 5 programming language system itself.
perl v5.36.3 2019-02-13 CPAN::Meta::History(3p)