Esteemed monks,

I have a question about module dependencies in Perl. I was thinking about various modules available on CPAN, and occasionally I see "pure Perl" modules, e.g. HTTP::Server::Brick. Ostensibly, pure Perl modules have no dependencies that are not part of the core Perl distribution.

My question is this: is there a metric for measuring the "level of dependency" for a given module? (Or a script, for that matter...)

Example: "pure Perl" modules might be analogous to level zero. A module that depends only on other pure Perl modules could be a level one, and so on.

I was just curious if there is a way to measure, i.e. quantify, a module's dependency tree. I thought of this while I was saying, "Yes," to cpan asking me if I wanted to install prerequisites, then "yes" again to the prerequisites of the prerequisites, and so on. I'd like to see that list up front before installing everything.

Is there something out there than can help with this? I'd also like to measure the "levels of dependency" between a given module and the "pure Perl level" - if that makes sense.

Thanks in advance for your thoughts.

-MC

In reply to "Levels of Dependency"? by mercutio_viz

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