I really liked your list!
This is ActiveState specific for their ppm utility, but for those who have ActiveState, it is handy:

$prompt>ppm profile save [my_config_file] (with no file, ouput goes to stdout)
$prompt>ppm profile restore my_config_file

The save option makes an XML file with lines like this:
<SOFTPKG NAME="Text-LevenshteinXS" VERSION="0.03"/>

This file also contains the ppm repositories that I have configured - not everything is at the main ActiveState repository. So if I want to "clone" my installation on another computer or for some reason do a complete re-installation on my own computer, I use the "save" command to a file. Then uninstall Perl, wipe out my Perl directory, re-install ActiveState Perl and then run the "restore" option to get all the packages re-installed. I just walked a friend through this last week and he said that it worked fine.

I think the OP wanted to know what is going on at run time on some other "unknown system", but if we are talking about utilities, I think this is a good one for AS users and I have recent experience that it does indeed "work as advertised".

In reply to Re^2: how to determine whether a module is installed or not? by Marshall
in thread how to determine whether a module is installed or not? by Anonymous Monk

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