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Indexing BackPAN

From brian_d_foy, 5 months ago

Indexing BackPAN is the first step to custom views of CPAN. See my more

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Slide 1:Indexing BackPAN brian d foy brian@stonehenge.com April 22, 2008

Slide 2:• BackPAN is the historical archive of Comprehensive Perl Archive Network (CPAN) • http://backpan.cpan.org • 200k number of files, 10 Gb

Slide 3:• CPAN only has the distributions the authors leave on there • 55k distributions, 4 Gb • CPAN tools use an index

Slide 4:• 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

Slide 5:• 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

Slide 6:How PAUSE indexes