Objectors Assume You Only Have One Perl Executable

• Yes, if some sysadmin were to change /usr/bin/perl to be Perl 7 rather than Perl 5, that would bork your programs

• But only if you were relying on /usr/bin/perl to execute your programs in the first place!

• That hasn't been "best practice" in this millennium

• Most applications from some kind of container: virtual machine, jail, docker

  • Compile your own perl and install it in the application's container