NAME

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

SYNOPSIS

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

DESCRIPTION

       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.

COMMANDS

   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.

AUTHOR

       Florian Ragwitz <rafl@debian.org>

COPYRIGHT AND LICENSE

       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.