Most of my Rails apps are using Ruby v1.8.7 but I need to start using Ruby v1.9.3 for one app in particular and to start learning Rails 3.2. It seems if I could install Ruby v1.9.3 side by side with v1.8.7 on my Fedora 16 x86_64 server, I should be able to have something like this:
"RUBY_VERSION = 1.9.3"
in an app's config/environment.rb file and everything would "just work" ?
I have messed around with RVM in the past trying to get system-wide installs to work with both Ruby versions but just got into trouble and was only ever able to get one version of Ruby working at once with Apache.