Copy one of our perls in installed-perls to some place where we really like to use it, say /usr/local. And correct every occurrence of the miserable path we gave it within installed-perls to the new location. Including, but not limited to the perl binaries and libperl.so and whatever binary file is there.

I started out with

find /home/src/perl/repoperls/installed-perls/perl/pb0yHi3/perl-5.8.0@26561 -type f | xargs perl -nle 'if (m|/home/src/perl/repoperls/installed-perls/perl/pb0yHi3| &&!$seen{$ARGV}++) {printf "%d %s\n", -T $ARGV, substr($ARGV,45)}'

to determine which files I had to modify how to get a perl from one path to another.