I think it's time we made Perl extendable. I'm trying to build intltool, but am running into the following problem:

checking for perl... /usr/bin/perl
checking for perl >= 5.8.1... 5.22.2
checking for XML::Parser... configure: error: XML::Parser perl module is required for intltool

Not only does intltool not declare its dependency on Perl, but there's no way to declare it's dependency on the Perl XML Parser module.