This one time,
at band camp in
11:23 < sartak> 7% of CPAN directly depends on Moose 11:24 < sartak> 1655 dists of 23,808 11:26 < genehack> sartak: what's the percentage that indirectly depends? 11:26 < sartak> dunno. I'd like to know though 11:27 * sartak got those numbers from http://mapofcpan.org/ and quick inspection shows that it's counting only direct dependents (see the Dist::Zilla territory) 11:32 < genehack> that seems like something that should be trivial for somebody who knows the MetaCPAN API well... ... 17:32 < genehack> sartak: 2334 dists have direct or indirect Moose deps 17:33 < genehack> that's 9.8% 17:34 < genehack> (at least if my stupid abuse of the metacpan search API didn't have a thinko.)
Update on 26 May 2012: Ran the same code for Moo and Mouse -- they have 263 and 270 dependents, respectively. That's approximately 12% of CPAN, all told, depending on one of these modules...