What do think about my idea to wikify this? As “Standalone perl installation via Homebrew” or something like that.
Please note that all we have done here is not necessary to run the occasional Perl one-liner in the command line, like for example in this macro. The OS’ default perl is good enough for that.
But, if you have a script that requires additional (non-core) modules, IMO the independent install, as we have done it here, is the better way.