$ visitcpan -- perl -E 'if (-f "inc/Module/Install.pm") { say "MI" } elsif (-f "Build.PL") { say "MB" } elsif (-f "Makefile.PL") { say "EUMM" }' | perl -E 'while (<>) { chomp; $cnt{$_}++ } say "$_: $cnt{$_}" for keys %cnt'

MI: 2306
MB: 2675
EUMM: 11781