If I have a perl module installed on a development machine and I want to temporarily run a different version of that module (for example, a copy of the module in a local repo), I can modify the $PERL5LIB in my my bash profile and insert the path to the 'lib' directory in the temporary version of the module to the beginning of $PERL5LIB and then reload bash. Then, to restore the original module, I remove the path to the temporary module form $PERL5LIB and restart bash.
This isn't too bad but just curious to know if others do the same thing or if there is some less hassle free way of doing this. Perhaps I should be using local::lib instead? Note that I'm using perlbrew so I'm not sure if local::lib is a viable option for me. Thanks.