CPAN::Meta::YAML(3perl) Perl Programmers Reference Guide CPAN::Meta::YAML(3perl)

CPAN::Meta::YAML - Read and write a subset of YAML for CPAN Meta files

version 0.018

use CPAN::Meta::YAML;

# reading a META file
open $fh, "<:utf8", "META.yml";
$yaml_text = do { local $/; <$fh> };
$yaml = CPAN::Meta::YAML->read_string($yaml_text)
  or die CPAN::Meta::YAML->errstr;

# finding the metadata
$meta = $yaml->[0];

# writing a META file
$yaml_text = $yaml->write_string
  or die CPAN::Meta::YAML->errstr;
open $fh, ">:utf8", "META.yml";
print $fh $yaml_text;

This module implements a subset of the YAML specification for use in reading and writing CPAN metadata files like META.yml and MYMETA.yml. It should not be used for any other general YAML parsing or generation task.

NOTE: META.yml (and MYMETA.yml) files should be UTF-8 encoded. Users are responsible for proper encoding and decoding. In particular, the "read" and "write" methods do not support UTF-8 and should not be used.

This module is currently derived from YAML::Tiny by Adam Kennedy. If there are bugs in how it parses a particular META.yml file, please file a bug report in the YAML::Tiny bugtracker:


  • Adam Kennedy <>
  • David Golden <>

This software is copyright (c) 2010 by Adam Kennedy.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

2021-05-23 perl v5.34.0