Why won't rbenv or chruby switch to an installed version of Ruby?

Question

I'm trying to get Jekyll running on my Mac M1. This requires a Ruby install. I had everything working a couple days ago, but must have changed something and now I cannot make sense of why it's no longer working nor find a fix. Here are the pieces of the puzzle - I hope someone smarter and more experienced than me can help.

It appears that I have Ruby 3.2.1 installed:

MacBook-Air.local~: rbenv version
3.2.1 (set by /Users/johnzumsteg/.rbenv/version) 

Run rbenv global for 3.2.1

MacBook-Air.local~: rbenv global 3.2.1

See what Ruby version is current

MacBook-Air.local~: ruby --version
ruby 2.6.10p210 (2022-04-12 revision 67958) [universal.arm64e-darwin22]

Not what I expected. That's the default MacOS Ruby install. Try chruby:

MacBook-Air.local~: chruby 3.2.1
chruby: unknown Ruby: 3.2.1

Also not what I expected.

If it's of help, here's PATH (with line-feeds between individual paths for clarity):

/Users/johnzumsteg/.rbenv/bin:
/Users/johnzumsteg/.gem/ruby/3.2.1/bin:
/Users/johnzumsteg/.rbenv/shims:
/usr/local/opt/ruby/bin:
/usr/local/lib/ruby/gems/3.2.1/bin:
/opt/homebrew/bin:
/opt/homebrew/sbin:
/Library/Frameworks/Python.framework/Versions/3.10/bin:
/Library/Frameworks/Python.framework/Versions/3.9/bin:
/usr/local/bin:/System/Cryptexes/App/usr/bin:
/usr/bin:
/bin:/usr/sbin:
/sbin:/Library/Apple/usr/bin:
/Users/johnzumsteg/.cargo/bin

And the appropriate section of .zshrc:

export PATH="/usr/local/opt/ruby/bin:/usr/local/lib/ruby/gems/3.2.1/bin:$PATH"
eval "$(rbenv init - zsh)"
export PATH="$HOME/.gem/ruby/3.2.1/bin: $PATH" 
export PATH="$HOME/.rbenv/bin:$PATH"
# enable chruby
source /usr/local/opt/chruby/share/chruby/auto.sh
source /opt/homebrew/opt/chruby/share/chruby/chruby.sh

Clearly I'm not expert at this. I've tried to research for a solution, so I can learn something, but though it seems that I've tried everything I can find, I'm still stuck.

I will greatly appreciate any and all help.

I've trie multiple installs of Ruby 3.2.1 and many trouble-shooting ideas found in my search for a solution

Answer 1

Don't use multiple ruby version managers, otherwise they'll end up fighting each other over which one is controlling your current version of ruby.

For rbenv, this should be the only Ruby-related config for your shell:

eval "$(rbenv init -)"

And this should be the only Ruby-related path in your PATH:

/Users/yourusername/.rbenv/shims

I see five different configs for you, so it's not surprising that one of those is taking precedence over rbenv.