I’ve found RVM’s gemsets are no longer useful to me. I used to make a separate gemset for each project by placing .ruby-version and .ruby-gemset file in each project directory. But whenever a Ruby release come out, I repeated uninstalling previous version and then clean installing new version. So I decided to move to chruby, smaller and simpler one.

Goodbye, RVM

rvm implode

Also if you have additional script lines loading RVM, remove them. I left them to make it work only if RVM is installed.

[[ -s "$HOME/.rvm/scripts/rvm/" ]] && source "$HOME/.rvm/scripts/rvm"

Installing ruby-install

ruby-install handles installations of various Rubies.

If you’re on OS X:

brew install ruby-install

If you’re on Arch Linux:

yaourt -S ruby-install


wget -O ruby-install-0.6.0.tar.gz
tar -xzvf ruby-install-0.6.0.tar.gz
cd ruby-install-0.6.0/
sudo make install

Installing chruby

If you’re on OS X:

brew install chruby


wget -O chruby-0.3.9.tar.gz
tar -xzvf chruby-0.3.9.tar.gz
cd chruby-0.3.9/
sudo make install

Then all I need to do is to load it from startup script, ~/.*shrc.

if [ -e /usr/local/share/chruby/chruby.sh ]; then
  source /usr/local/share/chruby/chruby.sh
  source /usr/local/share/chruby/auto.sh

The auto.sh is for auto-switching the current version of Ruby according to .ruby-version file of the current directory. This is optional.

chruby provides ways to migrate Rubies from another Ruby manager, but I started from scratch, so installed latest Ruby using ruby-install.

ruby-install ruby 2.3.0

Then which ruby will points to some path under ~/.rubies directory.

which ruby

Now it’s possible to auto-switch the Ruby version with .ruby-version file or manually with chruby commands like chruby ruby-2.3.0 or chruby system, etc.