How to install into 5.6.2
Contrary to popular belief you can install almost all CPAN packages under 5.6.2.
Set the urllist in your
rm ./cpan/Metadata and the 3 outdated
sources/authors/01mailrc.txt.gz sources/modules/02packages.details.txt.gz sources/modules/03modlist.data.gz
Then start installing.
There are a couple of authors who agressively used to boycott 5.6 in their dependencies (schwern, dagolden, kenwilliams, rsignes), but it is quite easy to fix this. So after a couple of refused installations do this:
cd .cpan/build grep 'use ExtUtils::MakeMaker' */Makefile.PL sed -i 's/use ExtUtils::MakeMaker 6.3[0-9];/use ExtUtils::MakeMaker;/' \ */Makefile.PL
Module::Build can also be installed (0.34), DBI (1.604), Moose (0.40), DateTime (0.66) and many more.
If your CPAN Metadata fails to find the package this is because nobody submitted a PASS report for this package on 5.6.2 (I will not do, because I patched the packages) and so the dynamic cp5.6.2an.barnyard.co.uk does not offer it. Fall back to your default CPAN url and try again then.
For makefile writers: It is easy to allow older perls to install by checking the EUMM version at run-time. For META and LICENSE checks.
Enjoy the speed of an unbloated and fast perl5.6.2!
BTW: If you are concerned about the 5.6 vulnerability for CGI scripts on oCERT-2011-003 style DOS attacks apply this patch to 5.6.2: http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2011-12/msg01082.html
p5p in the last years made such things possible: http://www.reddit.com/r/perl/comments/odt7m/perlisnowtheslowestprogramminglanguage/