CPAN dependency graph

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

I want to play around with a graph database (Neo4j) and thought that CPAN-modules and their depdendencies might make a nice playground.

So to fill my database I need to generate a list of all available CPAN-modules, their authors and for every module the list of it's (immediate) dependencies.

My question is now: What is the best way to do this?

If I had a way to generate the list of all modules I could probably feed that into CPAN::FindDependencies to get the dependecies but for one that would probably take a long time to complete and furthermore there does not seem to be a way to get the authors.

So is there some better way to obtain this data?

Comment on CPAN dependency graph

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Re: CPAN dependency graph by Corion (Patriarch) on Mar 26, 2015 at 11:40 UTC
I'm not sure that a publically downloadable database is available, but I think you can talk to DrHyde if they want to share the http://deps.cpantesters.org database with you. Personally, I would just look at CPAN::Mini::Visit to visit each of the latest distributions of a CPAN mirror and extract the needed prerequisites. Alternatively, you can visit each distribution and home it has recent/accurate `META.json` files and use these to build your dependency graph. Also, maybe CPAN::Mini::Visit::Simple actually is simpler or simplyfies the job at hand.	[reply] [d/l]
Re: CPAN dependency graph by jeffa (Bishop) on Mar 26, 2015 at 16:48 UTC
If you don't mind parsing a bit of HTML, perhaps this page could provide your starting point: http://www.cpan.org/modules/01modules.index.html jeffa L-LL-L--L-LL-L--L-LL-L-- -R--R-RR-R--R-RR-R--R-RR B--B--B--B--B--B--B--B-- H---H---H---H---H---H--- (the triplet paradiddle with high-hat)	[reply] [d/l] [select]
Re: CPAN dependency graph by Anonymous Monk on Mar 26, 2015 at 20:46 UTC
Re: RFC: QA Uploads ( yes, cpanmetadb cpanminus cpanm --latest-unauthorized ) http://cpanmetadb.plackperl.org/ / http://cpanmetadb.plackperl.org/v1.0/package/Plack App::CPANIDX - Queryable web-based CPAN Index CPANDB - A unified database of CPAN metadata information /search/reverse_dependencies/Plack / http://api.metacpan.org/v0/search/reverse_dependencies/Plack	[reply]
Re^2: CPAN dependency graph by Anonymous Monk on Mar 26, 2015 at 21:01 UTC
CPANDB / cpangraph - Generate dependency chain graphs for CPAN modules	[reply]