I use ruby-install and chruby. No runtime hacks or patching of cd. rvm and rbenv failed numerous times, ruby-install and chruby use env var manipulation only to

I use ruby-install and chruby. No runtime hacks or patching of cd. rvm and rbenv failed numerous times, ruby-install and chruby use env var manipulation only to accomplish ruby switching. (No gem sets but they don't really solve anything anyhow.) https://github.com/postmodern/ruby-install https://github.com/postmodern/ruby-install https://github.com/postmodern/chruby https://github.com/postmodern/chruby