RRRRb Matrix (Ruby, RubyGems, RuboCop, Rails, Bundler)

#rails #ruby #tooling

Other posts in my Compatibility Matrix Series

How to Check License Compatibility in GHA (License Compatibility Matrix with Apache SkyWalking Eyes)
ActiveRecord / SQlite3 Compatibility Matrix

NOTE: This blog post is now an encoded matrix in a regularly updated gem: kettle-rb

The world needs a modern matrix showing the maximum working versions of things in Ruby-land. So I made this.

ruby	MRI	ARM64& MacOS 12	gem	bundler	rubocop (install)	rubocop-lts (eval)	rails
1.8.7-p374		🙅			👋	0.1	4.0.x
1.9.3-p551		🙅	2.7.11	1.17.3	0.41.2	2.0	4.2.11.3
jruby-1.7.27	1.9	🌱	👆️	👆️	👆️	👆️	👆️
2.0.0-p648		🙅	👆️	👆️	0.50.0	4.0	👆️
2.1.10		🙅	👆️	👆️	0.57.2	6.0	👆️
2.2.10		🙅	👆️	👆️	0.68.1	8.0	5.2.8.1
2.3.8		🙅	3.3.27	2.3.27	0.81.0	10.0	👆️
jruby-9.1.17.0	2.3	🌱	👆️	👆️	👆️	👆️	👆️
2.4.10		🙅	👆️	👆️	1.12.1	12.0	👆️
2.5.9		🙅	👆	👆️	1.28.2	14.0	6.0.6.1
jruby-9.2.21.0	2.5	🌱	👆️	👆️	👆️	👆️	👆️
2.6.10		🌱	3.4.22	2.4.22	1.50.2	16.0	6.1.7.10
jruby-9.3.15.0	2.6	🌱	👆️	👆️	👆️	👆️	👆️
2.7.8		🌱	👆️	👆️	1.80.x	18.0	7.2.2.2
3.0.7		🌱	3.5.23	2.5.23	👆️	20.0	👆️
truffleruby-22.3.1	3.0	🌱	🙅️*	🙅️*	👆️	👆️	👆️
3.1.7		🌱	3.6.9	2.6.9	👆️	22.0	👆️
truffleruby-23.0.0	3.1	🌱	🙅️*	🙅️*	👆️	👆️	👆️
jruby-9.4.12.x	3.1	🌱	👆️	👆️	👆️	👆️	👆️
3.2.9		🌱	3.7.x	2.7.x	👆️	24.0	8.0.x
truffleruby-23.1.2	3.2	🌱	🙅*	🙅️*	👆️	👆️	👆️
3.3.9		🌱	👆️	👆️	👆️	👆️	👆️
truffleruby-24.1.x	3.3.5	🌱	🙅️*	🙅️*	👆️	👆️	👆️
3.4.7		🌱	👆️	👆️	👆️	👆️	👆️

* truffleruby intentionally does not support upgrading rubygems / bundler at all.

Rubocop-LTS Even Versions:

"0.1.1"
"2.x.x"
"4.x.x"
"6.x.x"
# ... etc

rubocop-lts has even versions (odds are deprecated or non-extant).

Latest even releases can be installed on Ruby 2.7+, but are able to evaluate Ruby code down to the minimum they target.
For example, rubocop-lts version 0.1.1 targets Ruby 1.8, and will work on libraries that support Ruby 1.8 - 3.x.
This is intended for applications and libraries that lint against a range of Ruby versions,
starting at some minimum version.

Magic install commands

On old Rubies you can't run gem update --system, nor bundle update --bundler, because they have fallen out of support. So in order to upgrade to the latest version that will work with an older ruby you can do this instead:

RUBYGEMS_VERSION=3.4.22
# Adds > /dev/null 2>&1 to make it quiet
gem install rubygems-update -v ${RUBYGEMS_VERSION} > /dev/null 2>&1
# Updates both RubyGems and Bundler!
update_rubygems > /dev/null 2>&1