META.yml the difference between `name` and `requires`

bessarabov has asked for the wisdom of the Perl Monks concerning the following question:

Here the part of META.yml file https://metacpan.org/source/RIBASUSHI/DBIx-Class-0.08250/META.yml :

name: DBIx-Class
requires:
  Class::Accessor::Grouped: 0.10010
  Class::C3::Componentised: 1.0009
  Class::Inspector: 1.24
[download]

I wonder why there is 2 variants of writing the release name, the one with "-" and the one with "::". From my point of view this variant would be more robust:

name: DBIx-Class
requires:
  Class-Accessor-Grouped: 0.10010
  Class-C3-Componentised: 1.0009
  Class-Inspector: 1.24
[download]

How `cpan`, `cpanm` and other programms that work with deps convert "::" verion to the "-" version? For example I don't get it how to convert:

requires:
  LWP: 0
[download]

to the real release name witch is `libwww-perl`

Comment on META.yml the difference between `name` and `requires` Select or Download Code

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Re: META.yml the difference between `name` and `requires` by Corion (Patriarch) on Oct 06, 2013 at 10:29 UTC
I think the `name` is the name of the distribution, while the `requires` section lists modules (not distributions). This is just me guessing - CPAN::Meta::Spec likely has the gory details. To get from a module to its distribution is in `02packages.details.txt`, but there likely are CPAN modules that handle this mapping for you. I would look at CPAN::SQLite first, but most likely many of the other modules implement (or reuse) the similar logic.	[reply] [d/l] [select]
Re^2: META.yml the difference between `name` and `requires` by tobyink (Canon) on Oct 06, 2013 at 19:46 UTC
META-spec 1.4 is more relevant. CPAN::Meta::Spec is version 2 of the specification and is typically only used in META.json files rather than META.yml. CPAN::Meta::Spec has a more powerful prerequisite specification. (PS: can you please fix your `</i>`?) `use Moops; class Cow :rw { has name => (default => 'Ermintrude') }; say Cow->new->name`	[reply] [d/l]

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