Odd sort of behavior... when dumping \%:: with Data::Dumper in Stem/Conf.pm (insert a print @ line 234) the program just "freezes"... # A simple script to (naievely) figure out the non-core dependencies in Stem: # this for example, looks for anything not core in perl 5.008001 egrep -hR '^use ' ./lib/ | sed 's/[^a-zA-Z0-9_: ]//' | egrep -v 'use (Stem|[0-9]+)' | sort -u | cut -d ' ' -f 2 | perl -MModule::CoreList -M5.010 \ -ne 'chomp; say unless exists $Module::CoreList::version{"5.008001"}{$_}'