But this also trickles down inside VMs. Working with Linux, i’ve found that keeping the system as pristine as possible after installation is a good thing. When working with Perl, I set the following objectives:

1. Leave the system Perl alone.
2. Install any Perl I choose.
   • And even switch between installed Perls
   • Either globally or on a per-project page
3. Manage Perl module dependencies within the project’s git repo.