Hi
OK I have not used cpan correctly.
I have never heard of local::lib or @INC until this thread.
I did find cpan variables in my .bashrc file and removed them.
.
There was no option asked that mentioned "bootstrap".
On completion of the command .bashrc remained clear of any perl stuff.
If it isn't a bug it is a bad design. It shouldn't be so difficult to do something so simple.