rbenv (Simple Ruby Version Management) lets you easily switch between multiple versions of Ruby. It's simple, unobtrusive, and follows the UNIX tradition of single-purpose tools that do one thing well.
Another tool to be used for the same purpose is RVM.
You can install AUR.AUR from the
rbenv can be extended via a plugin system, and the rbenv wiki includes a list of useful plugins. The ruby-build plugin is especially useful, as it allows you to install Ruby versions with the
rbenv install command. You can install AUR from the AUR.
Installation of Ruby 2.0.0, 2.1.4, 2.1.6, 2.1.7, and 2.2.3 may show this error
ossl_ssl.c:141:27: error: ‘SSLv3_method’ undeclared here (not in a function)
This can be solved using the patch as described here
curl -fsSL https://gist.github.com/mislav/055441129184a1512bb5.txt | rbenv install --patch 2.2.3