You might find some helpful guidance in Yes, even you can use CPAN Installing Modules Without Root.

If your personal library appears before the system libraries in the @INC variable (the list of directories perl searches for modules) then perl will find the modules you have installed and use them instead of whatever version is in the system libraries. You may have issues with dependencies but you can install as much as you want/need to in your personal library to satisfy those dependencies. This will work until you need perl itself to be different (e.g. different compile time options). But this isn't likely to be a problem in the short term.

In reply to Re^3: path to perl on umbuntu by ig
in thread path to perl on umbuntu by Anonymous Monk

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