[oneeyedpigeon]

Warning to Mac users: you'll need at least ruby 2.7 to run this because it uses a feature called 'argument forwarding'. Looks like the latest ruby installed on macOS 15 is 2.6.

I eventually got it working with a combination of techniques from [this stackoverflow post](https://stackoverflow.com/questions/8730676/how-can-i-switch...) but it's not left my system in the cleanest of states.

[radanskoric]

Author here, that's a good point. Most of my readers are Ruby developers and no one doing Ruby regularly uses the macOS Ruby. I'll throw in a simple Dockerfile for easier running.

[AlchemistCamp]

radanskoric's sibling comment is correct (but flagged).

Most Ruby devs I know are on Macs and none of them are running the ancient version Apple installs. Just like with most other languages, even JavaScript, you'll want to get a current or recent version.

Either use a version manager like RVM (popular) or ASDF (my favorite tool since it handles nearly all languages). You can also install Ruby with Homebrew, but I don't recommend using Homebrew for managing programming languages since you may want different versions on different projects.

[Jtsummers]

It's not flagged, it's dead. Their comments and submissions are all auto-killed. My guess is it's because their account had one comment in 2015, no activity until 2022, and then a submission. Everything from that submission in February 2022 on is dead (not [flagged][dead], just [dead]).

radanskoric: You should reach out to the mods (contact link at the bottom of almost every page here) and ask to have your account un-banned.

[dialsMavis]

rbenv is another great Ruby version manager.