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Indexing BackPAN
 

Indexing BackPAN

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Indexing BackPAN is the first step to custom views of CPAN. See my earlier CPAN talk too.

Indexing BackPAN is the first step to custom views of CPAN. See my earlier CPAN talk too.

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    Indexing BackPAN Indexing BackPAN Presentation Transcript

    • Indexing BackPAN brian d foy brian@stonehenge.com April 22, 2008
    • • BackPAN is the historical archive of Comprehensive Perl Archive Network (CPAN) • http://backpan.cpan.org • 200k number of files, 10 Gb
    • • CPAN only has the distributions the authors leave on there • 55k distributions, 4 Gb • CPAN tools use an index
    • • Perl doesn't have a package manager • Install a file by putting it in @INC • No file to distro reverse mapping • Avoids overwriting by PAUSE indexing and permissions checking • No version management, multiple versions, author management
    • • Recreate module installation history • Start with the files in @INC • Work backward to distro • End with a list of distros to install • Create a MyCPAN with those distros
    • How PAUSE indexes