Other posts in my Compatibility Matrix Series
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 | 🌱 | 🙅️* | 🙅️* | 👆️ | 👆️ | 👆️ |
| 3.4.5 | 🌱 | 👆️ | 👆️ | 👆️ | 👆️ | 👆️ |
* truffleruby intentionally does not support upgrading rubygems / bundler at all.
** rubocop-lts has even versions (odds are deprecated or non-extant).
Rubocop-LTS Even Versions:
"0.1.1"
"2.x.x"
"4.x.x"
"6.x.x"
# ... etc
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
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