Module::Install::AuthorRequires - declare author-only dependencies

       Florian Ragwitz <rafl@debian.org>

author_requires
           author_requires $module;
           author_requires $module => $version;

       This declares a hard dependency, that's only enforced in author environments and is not put in the
       generate "META.yml" file of the distribution.

       Copyright (c) 2009  Florian Ragwitz

       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 v5.40.1                                       2025-08-15               Module::Install::AuthorRequires(3pm)

       Modules often have optional requirements, for example dependencies that are useful for (optional) tests,
       but not required for the module to work properly.

       Usually you want all developers of a project to have these optional modules installed. However, simply
       telling everyone or printing diagnostic messages if optional dependencies are missing often isn't enough
       to make sure all authors have all optional modules installed.

       "Module::Install" already has a way of detecting an author environment, so an easy way to achieve the
       above would be something like:

           if ($Module::Install::AUTHOR) {
               requires 'Some::Module';
               requires 'Another::Module' => '0.42';
           }

       Unfortunately, that'll also make the optional dependencies show up in the distributions "META.yml" file,
       which is obviously wrong, as they aren't actually hard requirements.

       Working that around requires a considerable amount of non-trivial Makefile.PL hackery, or simply using
       this module's "author_requires" command.

       Module::Install::AuthorRequires - declare author-only dependencies

           author_requires 'Some::Module';
           author_requires 'Another::Module' => '0.42';