If you want to use this package as your default system ruby, as root
create symbolic links like so (overwriting any previous default):

 ln -sf ${PREFIX}/bin/ruby30 ${PREFIX}/bin/ruby
 ln -sf ${PREFIX}/bin/erb30 ${PREFIX}/bin/erb
 ln -sf ${PREFIX}/bin/irb30 ${PREFIX}/bin/irb
 ln -sf ${PREFIX}/bin/rdoc30 ${PREFIX}/bin/racc
 ln -sf ${PREFIX}/bin/rdoc30 ${PREFIX}/bin/rdoc
 ln -sf ${PREFIX}/bin/rdoc30 ${PREFIX}/bin/rbs
 ln -sf ${PREFIX}/bin/ri30 ${PREFIX}/bin/ri
 ln -sf ${PREFIX}/bin/rake30 ${PREFIX}/bin/rake
 ln -sf ${PREFIX}/bin/gem30 ${PREFIX}/bin/gem
 ln -sf ${PREFIX}/bin/bundle30 ${PREFIX}/bin/bundle
 ln -sf ${PREFIX}/bin/bundler30 ${PREFIX}/bin/bundler
 ln -sf ${PREFIX}/bin/typeprof30 ${PREFIX}/bin/typeprof

The ruby-shims package is also available to automatically select an
appropriate Ruby version per-project directory or system-wide.
