Perl: find "pure perl" modules only

I'm looking for a directory of perl modules which are perl only. That means (in DSLIP speak):

Perl-only, no compiler needed, should be platform independent

As far as I see the well known search engines does not allow to search in this category only. Am I wr开发者_JS百科ong? Maybe there is a nice way to get a complete module list...?

http://deps.cpantesters.org/ shows whether a module is not pure-perl. The criteria are explained in A Brief Note on Purity warnings, the source implementing this is somewhere in http://www.cantrell.org.uk/cgit/cgit.cgi/cpandeps/.

Combine this with visitcpan to get data for every distribution.