I'm looking for a simple persistent log of successful installs, so if on a freshly brewed Perl I were to install IO::All, the log would have: IO::String, IO::All. And then months later when a new Perl arrives I have a list of modules installed in the order they happened (including dependencies).

Use autobundle (cpanp "b" command) for that along with Re^2: How to clean-up an autobundle so it's really "auto-installable"